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Replacement and OEM Parts for 2003 GMC Sierra 1500 Exhaust Manifolds, Pipes, Mufflers & Components

2003 GMC Sierra 1500 Exhaust Manifolds, Pipes, Mufflers & Components

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Engine & Drivetrain

93 products about 2003 GMC Sierra 1500 Exhaust Manifolds, Pipes, Mufflers & Components found

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  • OEM 2003 GMC Sierra 1500 Engine Exhaust Manifold Diagram - 12616285
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 1500 Engine Exhaust Manifold

    PartNumber: 12616285
    OEM 2003 GMC Sierra 1500 Engine Exhaust Manifold - 12616285
    Product Specifications
    • Notes: All Models; 4.8l, 5.3l; Left; All;All Models; 6.0l; Left; All; 4.8 Liter Gas; 5.3 Liter Gas; 6.0 Liter Gas
    • Location: Driver Side
    • Other Names: Exhaust Manifold, Manifold
    • Item Dimensions: 10.1 x 8.1 x 25.4 inches
    • Item Weight: 10.10 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 12564155, 12602037, 12571678, 12562235
    • Part Description: 2003 GMC Sierra 1500 Engine Exhaust Manifold
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | Base, C3, Denali, HT, Hybrid, SL, SLE, SLT, WT, XFE | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L ELECTRIC/GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L ELECTRIC/FLEX, 8 Cyl 6.0 L ELECTRIC/GAS, 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
    $93.15 MSRP: $167.37
    You Save: $74.22 (45%)
  • OEM 2003 GMC Sierra 1500 Converter & Pipe Diagram - 10395214
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 1500 Converter & Pipe

    PartNumber: 10395214
    OEM 2003 GMC Sierra 1500 Converter & Pipe - 10395214
    Product Specifications
    • Other Names: Catalytic Converter, Converter & Pipe, Front Pipe
    • Item Dimensions: 51.8 x 20.2 x 15.2 inches
    • Item Weight: 20.30 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 19420109
    • Part Description: 2003 GMC Sierra 1500 Converter & Pipe
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | Denali, SLE, SLT | 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS
    $1230.69 MSRP: $1843.58
    You Save: $612.89 (34%)
  • OEM 2003 GMC Sierra 1500 Converter & Pipe Diagram - 10395214
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 1500 Converter & Pipe

    PartNumber: 10395214
    OEM 2003 GMC Sierra 1500 Converter & Pipe - 10395214
    Product Specifications
    • Other Names: Catalytic Converter, Converter & Pipe, Front Pipe
    • Item Dimensions: 51.8 x 20.2 x 15.2 inches
    • Item Weight: 20.30 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 19420109
    • Part Description: 2003 GMC Sierra 1500 Converter & Pipe
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | Denali, SLE, SLT | 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS
    $1230.69 MSRP: $1843.58
    You Save: $612.89 (34%)
  • OEM 2003 GMC Sierra 1500 Converter & Pipe Diagram - 10395214
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 1500 Converter & Pipe

    PartNumber: 10395214
    OEM 2003 GMC Sierra 1500 Converter & Pipe - 10395214
    Product Specifications
    • Other Names: Catalytic Converter, Converter & Pipe, Front Pipe
    • Item Dimensions: 51.8 x 20.2 x 15.2 inches
    • Item Weight: 20.30 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 19420109
    • Part Description: 2003 GMC Sierra 1500 Converter & Pipe
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | Denali, SLE, SLT | 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS
    $1230.69 MSRP: $1843.58
    You Save: $612.89 (34%)
  • Walker Quiet Flow Stainless Steel Oval Aluminized Exhaust Muffler for 2003 GMC Sierra 1500 - 21356

    Walker® Quiet Flow Stainless Steel Oval Aluminized Exhaust Muffler for 2003 GMC Sierra 1500

    PartNumber: 21356
    Product Specifications
    • Notes: Premium - Limited Lifetime Warranty; If Welded Assy, Replace All Reqd Parts;Premium - Limited Lifetime Warranty; If welded Assy, replace all Reqd parts.
    • Body Height: 7.000
    • Body Length: 24.000
    • Body Material: Stainless Steel
    • Body Width: 9.000
    • Exhaust Component Mount Type: No Mounts
    • Finish: Aluminized
    • Grade Type: Regular
    • Inlet 1 Inside Diameter: 2.750
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Inlet Offset: 1.625
    • Internet Product Code (IPC): 24930647BF5
    • Item has MSDS (SDS): N
    • Max Year Covered: 2007
    • MFG Brand Name: Walker Exhaust
    • MFG Model # (Series): 21356
    • MFG Name: Tenneco, Inc
    • Min Year Covered: 1999
    • Most Popular Make / Model: Chevrolet Silverado 1500
    • Most Popular Year: 2004
    • Muffler Body Height: 7.0
    • Muffler Body Length: 24.0
    • Muffler Body Material: Stainless Steel
    • Muffler Body Width: 9.0
    • Muffler Color / Finish: Bare
    • Muffler Inlet: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Count: 1
    • Muffler Inlet Diameter (in): 2.75
    • Muffler Inlet Diameter 2 (in): 0.0
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet: Offset
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Count: 1
    • Muffler Outlet Diameter (in): 2.75
    • Muffler Outlet Diameter Designation: Outside Diameter
    • Muffler Overall Length: 29.0
    • Muffler Reversible: No
    • Muffler Shape: Oval
    • Outlet 1 Outside Diameter: 2.750
    • Outlet Configuration: Offset
    • Overall Length: 29.000
    • Product Grade: Economy
    • Reversible: No
    • Shape: Oval
    • Supplier Company Name: Tenneco, Inc
    • Total Part VIO: 4072207
    • Universal Or Specific Fit: Specific
    • UPC: 086387213561
    • Part Description: 2003 GMC Sierra 1500 Quiet Flow Stainless Steel Oval Aluminized Exhaust Muffler
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | All Trims | 6 Cyl 4.3L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 4.8L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 5.3L
    Show More
    $98.71
  • Dorman Cast Iron Natural Exhaust Manifold for 2003 GMC Sierra 1500 - 674-523

    Dorman® Cast Iron Natural Exhaust Manifold for 2003 GMC Sierra 1500

    PartNumber: 674-523
    Product Specifications
    • Finish: Natural
    • Flange Bolt Hole Quantity: 0
    • Flange Stud Hole Quantity: 3
    • Gasket or Seal Included: Yes
    • Header Material: Cast Iron
    • Heat Shield Included: Yes
    • Inlet Port Shape: Square
    • Installation Hardware Included: Yes
    • Item Grade: Regular
    • Manifold Bolt Hole Quantity: 6
    • OE Part Number: 12574406, 12592082
    • Package Quantity: 1
    • Position: Driver Side
    • UPC: 037495059879
    • Part Description: 2003 GMC Sierra 1500 Cast Iron Natural Exhaust Manifold
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | All Trims | 6 Cyl 4.3L
    $168.63
  • Victor Reinz Exhaust Manifold Gasket Set for 2003 GMC Sierra 1500 - 11-10829-01

    Victor Reinz® Exhaust Manifold Gasket Set for 2003 GMC Sierra 1500

    PartNumber: 11-10829-01
    Product Specifications
    • Bolt Hole Quantity: 3
    • Color: Color May Vary
    • Complete: Y
    • Configuration: Two Piece
    • Contains Applications: Y
    • Material: Fiber And Metal
    • Release Wave: 12/15/2017
    • Thickness: 0.062
    • UPC: 023913751609
    • Part Description: 2003 GMC Sierra 1500 Exhaust Manifold Gasket Set
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | All Trims | 6 Cyl 4.3L
    $18.24
  • Walker Aluminized Steel Exhaust Intermediate Pipe for 2003 GMC Sierra 1500 - 54256

    Walker® Aluminized Steel Exhaust Intermediate Pipe for 2003 GMC Sierra 1500

    PartNumber: 54256
    Product Specifications
    • Notes: If welded Assy, replace all Reqd parts.;If Welded Assy, Replace All Reqd Parts
    • Exhaust Pipe Inlet Connection Type: 2 Bolt Welded Flange
    • Exhaust Pipe Material: Steel
    • Exhaust Pipe Outlet Connection Type: Pipe Connection
    • Exhaust Pipe Overall Length: 37.2999
    • Exhaust Pipe Wall Maximum Gauge: Undisclosed
    • Finish: Aluminized
    • Fitment: Direct OE Replacement
    • Grade Type: Regular
    • Inlet 1 Type: 2 Bolt Welded Flange
    • Inlet Quantity: 1
    • Inlet Type: 2 Bolt Welded Flange
    • Internet Product Code (IPC): 6C19FB9CADE
    • Item Grade: Standard Replacement
    • Item has MSDS (SDS): N
    • Length: 37.750
    • Material: Steel
    • Max Year Covered: 2007
    • MFG Brand Name: Walker Exhaust
    • MFG Model # (Series): 54256
    • MFG Name: Tenneco, Inc
    • Min Year Covered: 1999
    • Most Popular Make / Model: Chevrolet Silverado 1500
    • Most Popular Year: 2004
    • Outlet 1 Outside Diameter: 2.75
    • Outlet 1 Type: Pipe Connection
    • Outlet Outside Diameter: 2.750
    • Outlet Quantity: 1
    • Outlet Type: Pipe Connection
    • Product Grade: Economy
    • Supplier Company Name: Tenneco, Inc
    • Total Part VIO: 4072207
    • Universal Or Specific Fit: Specific
    • UPC: 086387542562
    • Part Description: 2003 GMC Sierra 1500 Aluminized Steel Exhaust Intermediate Pipe
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | All Trims | 6 Cyl 4.3L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 4.8L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 5.3L
    Show More
    $40.12
  • Dorman Cast Iron Natural Exhaust Manifold for 2003 GMC Sierra 1500 - 674-524

    Dorman® Cast Iron Natural Exhaust Manifold for 2003 GMC Sierra 1500

    PartNumber: 674-524
    Product Specifications
    • Finish: Natural
    • Flange Bolt Hole Quantity: 0
    • Flange Stud Hole Quantity: 3
    • Gasket or Seal Included: Yes
    • Header Material: Cast Iron
    • Heat Shield Included: Yes
    • Inlet Port Shape: Square
    • Installation Hardware Included: Yes
    • Item Grade: Regular
    • Manifold Bolt Hole Quantity: 6
    • OE Part Number: 12560514, 12562407, 12574320, 12592083
    • Package Quantity: 1
    • Position: Passenger Side
    • UPC: 037495059886
    • Part Description: 2003 GMC Sierra 1500 Cast Iron Natural Exhaust Manifold
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | All Trims | 6 Cyl 4.3L
    $131.16
  • Walker Soundfx Steel Oval Direct Fit Aluminized Exhaust Muffler for 2003 GMC Sierra 1500 - 18823

    Walker® Soundfx Steel Oval Direct Fit Aluminized Exhaust Muffler for 2003 GMC Sierra 1500

    PartNumber: 18823
    Product Specifications
    • Notes: If Welded Assy, Replace All Reqd Parts; Optional; SoundFX for 21356
    • Body Height: 7.000
    • Body Length: 24.000
    • Body Material: Steel
    • Body Width: 9.000
    • Exhaust Component Mount Type: Uses Factory Hangers
    • Finish: Aluminized
    • Grade Type: Regular
    • Inlet 1 Inside Diameter: 2.750
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Inlet Offset: 1.625
    • Internet Product Code (IPC): 8465E046C4A
    • Item has MSDS (SDS): N
    • Max Year Covered: 2007
    • MFG Brand Name: Walker Exhaust
    • MFG Model # (Series): 18823
    • MFG Name: Tenneco, Inc
    • Min Year Covered: 1999
    • Most Popular Make / Model: Chevrolet Silverado 1500
    • Most Popular Year: 2004
    • Muffler Body Height: 7
    • Muffler Body Length: 24
    • Muffler Body Material: Steel
    • Muffler Body Width: 9
    • Muffler Color / Finish: Aluminized
    • Muffler Inlet: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Count: 1
    • Muffler Inlet Diameter (in): 2.75
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet: Offset
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Count: 1
    • Muffler Outlet Diameter (in): 2.75
    • Muffler Outlet Diameter Designation: Outside Diameter
    • Muffler Overall Length: 29
    • Muffler Reversible: No
    • Muffler Shape: Oval
    • Outlet 1 Outside Diameter: 2.750
    • Outlet Configuration: Offset
    • Overall Length: 29.000
    • Product Grade: Economy
    • Reversible: No
    • Shape: Oval
    • Supplier Company Name: Tenneco, Inc
    • Total Part VIO: 4072207
    • Universal Or Specific Fit: Specific
    • UPC: 086387188234
    • Part Description: 2003 GMC Sierra 1500 Soundfx Steel Oval Direct Fit Aluminized Exhaust Muffler
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | All Trims | 6 Cyl 4.3L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 4.8L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 5.3L
    Show More
    $38.58
  • Victor Reinz Graphite And Metal Exhaust Pipe Flange Gasket for 2003 GMC Sierra 1500 - 71-13623-00

    Victor Reinz® Graphite And Metal Exhaust Pipe Flange Gasket for 2003 GMC Sierra 1500

    PartNumber: 71-13623-00
    Product Specifications
    • Notes: Pipe To Manifold
    • Bolt Hole Quantity: 0
    • Inside Diameter: 2.345"
    • Location: Pipe to Manifold
    • Material: Graphite and Metal
    • Position: Passenger Side
    • Thickness: 1.030"
    • Type: Doughnut
    • UPC: 023913671662
    • Part Description: 2003 GMC Sierra 1500 Graphite And Metal Exhaust Pipe Flange Gasket
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | All Trims | 6 Cyl 4.3L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 4.8L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 5.3L
    Show More
    $8.20
  • Dorman Cast Iron Natural Exhaust Manifold for 2003 GMC Sierra 1500 - 674-732

    Dorman® Cast Iron Natural Exhaust Manifold for 2003 GMC Sierra 1500

    PartNumber: 674-732
    Product Specifications
    • Finish: Natural
    • Flange Bolt Hole Quantity: 0
    • Flange Stud Hole Quantity: 3
    • Gasket or Seal Included: Yes
    • Header Material: Cast Iron
    • Heat Shield Included: Yes
    • Inlet Port Shape: Round
    • Installation Hardware Included: Yes
    • Item Grade: Regular
    • Manifold Bolt Hole Quantity: 6
    • OE Part Number: 12569416, 12569530, 12578341, 12602038, 12616286, 12648339, 12677665
    • Package Quantity: 1
    • Position: Passenger Side
    • UPC: 019495212904
    • Part Description: 2003 GMC Sierra 1500 Cast Iron Natural Exhaust Manifold
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 4.8L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 5.3L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 6.0L
    Show More
    $137.52
  • OEM 2003 GMC Sierra 1500 Converter & Pipe Diagram - 10395213
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 1500 Converter & Pipe

    PartNumber: 10395213
    OEM 2003 GMC Sierra 1500 Converter & Pipe - 10395213
    Product Specifications
    • Other Names: Catalytic Converter, Converter & Pipe, Front Pipe
    • Item Dimensions: 40.2 x 11.3 x 7.1 inches
    • Item Weight: 17.00 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 19420124
    • Part Description: 2003 GMC Sierra 1500 Converter & Pipe
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | Denali, SLE, SLT | 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS
    $946.54 MSRP: $1415.00
    You Save: $468.46 (34%)
  • OEM 2003 GMC Sierra 1500 Converter & Pipe Diagram - 10395213
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 1500 Converter & Pipe

    PartNumber: 10395213
    OEM 2003 GMC Sierra 1500 Converter & Pipe - 10395213
    Product Specifications
    • Other Names: Catalytic Converter, Converter & Pipe, Front Pipe
    • Item Dimensions: 40.2 x 11.3 x 7.1 inches
    • Item Weight: 17.00 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 19420124
    • Part Description: 2003 GMC Sierra 1500 Converter & Pipe
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | Denali, SLE, SLT | 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS
    $946.54 MSRP: $1415.00
    You Save: $468.46 (34%)
  • OEM 2003 GMC Sierra 1500 Converter & Pipe Diagram - 10395213
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 1500 Converter & Pipe

    PartNumber: 10395213
    OEM 2003 GMC Sierra 1500 Converter & Pipe - 10395213
    Product Specifications
    • Other Names: Catalytic Converter, Converter & Pipe, Front Pipe
    • Item Dimensions: 40.2 x 11.3 x 7.1 inches
    • Item Weight: 17.00 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 19420124
    • Part Description: 2003 GMC Sierra 1500 Converter & Pipe
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | Denali, SLE, SLT | 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS
    $946.54 MSRP: $1415.00
    You Save: $468.46 (34%)
  • Walker Soundfx Steel Oval Direct Fit Aluminized Exhaust Muffler for 2003 GMC Sierra 1500 - 18138

    Walker® Soundfx Steel Oval Direct Fit Aluminized Exhaust Muffler for 2003 GMC Sierra 1500

    PartNumber: 18138
    Product Specifications
    • Notes: If Welded Assy, Replace All Reqd Parts; Optional; SoundFX Universal for 21356; Modifications and/or Additional Parts Reqd.
    • Automotive Item Grade: OEM Standard Part
    • Connection Type: Pipe
    • Inlet - Outlet Configuration: Offset Inlet - Offset Outlet
    • Inlet Diameter Designation: Inside Diameter
    • Inlet Quantity: 1 Inlet
    • Muffler Body Finish: Aluminized
    • Muffler Body Height: 7"
    • Muffler Body Length: 24"
    • Muffler Body Material: Steel
    • Muffler Body Shape: Oval
    • Muffler Body Width: 9"
    • Muffler Inlet Diameter: 2.75"
    • Muffler Outlet Diameter: 2.75"
    • Muffler Overall Length: 29"
    • Muffler Reversible: No
    • Muffler Series: SoundFX™
    • Muffler Type: Combination
    • Outlet Diameter Designation: Outside Diameter
    • Outlet Quantity: 1 Outlet
    • UPC: 086387181389
    • Part Description: 2003 GMC Sierra 1500 Soundfx Steel Oval Direct Fit Aluminized Exhaust Muffler
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | All Trims | 6 Cyl 4.3L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 4.8L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 5.3L
    Show More
    $47.48
  • Dorman Metal Black Exhaust Manifold To Cylinder Head Repair Clamp for 2003 GMC Sierra 1500 - 917-108

    Dorman® Metal Black Exhaust Manifold To Cylinder Head Repair Clamp for 2003 GMC Sierra 1500

    PartNumber: 917-108
    Product Specifications
    • Attachment Method: Bolt On
    • Finish: Black
    • Length: 5.3"
    • Material: Metal
    • Maximum Diameter: 0.49"
    • Minimum Diameter: 0.46"
    • OE Part Number: 11518860
    • Overall Length: 5.3"
    • Reusable: No
    • Self Locking: No
    • UPC: 019495825227
    • Part Description: 2003 GMC Sierra 1500 Metal Black Exhaust Manifold To Cylinder Head Repair Clamp
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 4.8L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 5.3L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 6.0L
    Show More
    $27.70
  • Dorman Cast Iron Natural Exhaust Manifold for 2003 GMC Sierra 1500 - 674-522

    Dorman® Cast Iron Natural Exhaust Manifold for 2003 GMC Sierra 1500

    PartNumber: 674-522
    Product Specifications
    • Finish: Natural
    • Flange Bolt Hole Quantity: 0
    • Flange Stud Hole Quantity: 3
    • Gasket or Seal Included: Yes
    • Header Material: Cast Iron
    • Heat Shield Included: Yes
    • Inlet Port Shape: Round
    • Installation Hardware Included: Yes
    • Item Grade: Regular
    • Manifold Bolt Hole Quantity: 6
    • OE Part Number: 12556078, 12562235, 12562330, 12564155, 12571678, 12602037, 12616285
    • Package Quantity: 1
    • Position: Driver Side
    • UPC: 019495064978
    • Part Description: 2003 GMC Sierra 1500 Cast Iron Natural Exhaust Manifold
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 4.8L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 5.3L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 6.0L
    Show More
    $95.43
  • Walker Aluminized Steel Exhaust Intermediate Pipe for 2003 GMC Sierra 1500 - 54257

    Walker® Aluminized Steel Exhaust Intermediate Pipe for 2003 GMC Sierra 1500

    PartNumber: 54257
    Product Specifications
    • Notes: If Welded Assy, Replace All Reqd Parts;If welded Assy, replace all Reqd parts.
    • Exhaust Pipe Inlet Connection Type: 2 Bolt Welded Flange
    • Exhaust Pipe Material: Steel
    • Exhaust Pipe Outlet Connection Type: Pipe Connection
    • Exhaust Pipe Overall Length: 47.0
    • Exhaust Pipe Wall Maximum Gauge: Undisclosed
    • Finish: Aluminized
    • Fitment: Direct OE Replacement
    • Grade Type: Regular
    • Inlet 1 Type: 2 Bolt Welded Flange
    • Inlet Quantity: 1
    • Inlet Type: 2 Bolt Welded Flange
    • Internet Product Code (IPC): 83487F6EA65
    • Item Grade: Standard Replacement
    • Item has MSDS (SDS): N
    • Length: 48.000
    • Material: Steel
    • Max Year Covered: 2007
    • MFG Brand Name: Walker Exhaust
    • MFG Model # (Series): 54257
    • MFG Name: Tenneco, Inc
    • Min Year Covered: 1999
    • Most Popular Make / Model: Chevrolet Silverado 1500
    • Most Popular Year: 2004
    • Outlet 1 Outside Diameter: 2.75
    • Outlet 1 Type: Pipe Connection
    • Outlet Outside Diameter: 2.750
    • Outlet Quantity: 1
    • Outlet Type: Pipe Connection
    • Product Grade: Economy
    • Supplier Company Name: Tenneco, Inc
    • Total Part VIO: 4072207
    • Universal Or Specific Fit: Specific
    • UPC: 086387542579
    • Part Description: 2003 GMC Sierra 1500 Aluminized Steel Exhaust Intermediate Pipe
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | All Trims | 6 Cyl 4.3L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 4.8L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 5.3L
    Show More
    $34.88
  • OEM 2003 GMC Sierra 1500 Exhaust Manifold Diagram - 12574320
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 1500 Exhaust Manifold

    PartNumber: 12574320
    OEM 2003 GMC Sierra 1500 Exhaust Manifold - 12574320
    Product Specifications
    • Notes: 4.3 Liter Gas; All Models; 4.3l; Right; All
    • Location: Passenger Side
    • Other Names: Exhaust Manifold
    • Item Dimensions: 24.9 x 9.6 x 8.2 inches
    • Item Weight: 13.20 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2003 GMC Sierra 1500 Exhaust Manifold
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | Base, HT, SL, SLE, SLT, WT | 6 Cyl 4.3 L GAS
    $162.48 MSRP: $257.98
    You Save: $95.50 (38%)
  • Walker Aluminized Steel Exhaust Intermediate Pipe for 2003 GMC Sierra 1500 - 52216

    Walker® Aluminized Steel Exhaust Intermediate Pipe for 2003 GMC Sierra 1500

    PartNumber: 52216
    Product Specifications
    • Notes: If Welded Assy, Replace All Reqd Parts;If welded Assy, replace all Reqd parts.
    • Exhaust Pipe Inlet Connection Type: 2 Bolt Welded Flange
    • Exhaust Pipe Material: Steel
    • Exhaust Pipe Outlet Connection Type: Pipe Connection
    • Exhaust Pipe Overall Length: 23.375
    • Exhaust Pipe Wall Maximum Gauge: Undisclosed
    • Finish: Aluminized
    • Fitment: Direct OE Replacement
    • Grade Type: Regular
    • Inlet 1 Type: 2 Bolt Welded Flange
    • Inlet Quantity: 1
    • Inlet Type: 2 Bolt Welded Flange
    • Internet Product Code (IPC): 2007091E0E6
    • Item Grade: Standard Replacement
    • Item has MSDS (SDS): N
    • Length: 23.750
    • Material: Steel
    • Max Year Covered: 2007
    • MFG Brand Name: Walker Exhaust
    • MFG Model # (Series): 52216
    • MFG Name: Tenneco, Inc
    • Min Year Covered: 1999
    • Most Popular Make / Model: Chevrolet Silverado 1500
    • Most Popular Year: 2004
    • Outlet 1 Outside Diameter: 2.75
    • Outlet 1 Type: Pipe Connection
    • Outlet Outside Diameter: 2.750
    • Outlet Quantity: 1
    • Outlet Type: Pipe Connection
    • Product Grade: Economy
    • Supplier Company Name: Tenneco, Inc
    • Total Part VIO: 4072207
    • Universal Or Specific Fit: Specific
    • UPC: 086387522168
    • Part Description: 2003 GMC Sierra 1500 Aluminized Steel Exhaust Intermediate Pipe
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | All Trims | 6 Cyl 4.3L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 4.8L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 5.3L
    Show More
    $32.99
  • OEM 2003 GMC Sierra 1500 Heat Shield Diagram - 15292580
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 1500 Heat Shield

    PartNumber: 15292580
    OEM 2003 GMC Sierra 1500 Heat Shield - 15292580
    Product Specifications
    • Notes: 4.8 Liter Gas
    • Location: Passenger Side
    • Other Names: Heat Shield
    • Item Dimensions: 53.0 x 23.9 x 5.2 inches
    • Item Weight: 2.20 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2003 GMC Sierra 1500 Heat Shield
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | Base, HT, SL, SLE, SLT, WT | 8 Cyl 4.8 L GAS
    $10.85 MSRP: $16.35
    You Save: $5.50 (34%)
  • Walker High Temperature Graphite for 2003 GMC Sierra 1500 - 31554

    Walker® High Temperature Graphite for 2003 GMC Sierra 1500

    PartNumber: 31554
    Product Specifications
    • Gasket / Seal Material: High Temperature Graphite With Wire Mesh Core
    • Gasket Thickness: 0.86
    • Gasket Type: Donut
    • Internet Product Code (IPC): 0DB4C56A0D8
    • Item Grade: Standard Replacement
    • Item has MSDS (SDS): N
    • Material: High Temperature Graphite With Wire Mesh Core
    • Max Year Covered: 2019
    • MFG Brand Name: Walker Exhaust
    • MFG Model # (Series): 31554
    • MFG Name: Tenneco, Inc
    • Min Year Covered: 1989
    • Most Popular Make / Model: Chevrolet Silverado 1500
    • Most Popular Year: 2007
    • Package Contents: 1 Gasket
    • Port 1 Length (in): 2.48
    • Port 1 Width: 2.48
    • Product Grade: Economy
    • Supplier Company Name: Tenneco, Inc
    • Thickness: 0.860
    • Total Part VIO: 304160
    • UPC: 086387315548
    • Part Description: 2003 GMC Sierra 1500 High Temperature Graphite
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | All Trims | 6 Cyl 4.3L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 4.8L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 5.3L
    Show More
    $10.79
  • OEM 2003 GMC Sierra 1500 Heat Shield Diagram - 15035337
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 1500 Heat Shield

    PartNumber: 15035337
    OEM 2003 GMC Sierra 1500 Heat Shield - 15035337
    Product Specifications
    • Notes: 4.8 Liter Gas
    • Location: Driver Side
    • Other Names: Heat Shield
    • Fitment Type: Direct Replacement
    • Part Description: 2003 GMC Sierra 1500 Heat Shield
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | Base, HT, SL, SLE, SLT, WT | 8 Cyl 4.8 L GAS
    $5.63 MSRP: $8.49
    You Save: $2.86 (34%)
  • Walker Perforated Metal for 2003 GMC Sierra 1500 - 31718

    Walker® Perforated Metal for 2003 GMC Sierra 1500

    PartNumber: 31718
    Product Specifications
    • Bolt Hole Center to Center Distance 1: 4.125"
    • Class: B
    • Material: Perforated Metal with Fiber Core and Fire Ring
    • Port 1 Length: 2.75"
    • Port 1 Width: 2.75"
    • Position: Driver Side
    • Thickness: 0.063"
    • Part Description: 2003 GMC Sierra 1500 Perforated Metal
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | All Trims | 6 Cyl 4.3L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 4.8L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 5.3L
    Show More
    $10.48
  • Walker Rubber Black Exhaust Insulator for 2003 GMC Sierra 1500 - 35229

    Walker® Rubber Black Exhaust Insulator for 2003 GMC Sierra 1500

    PartNumber: 35229
    Product Specifications
    • Attachment Method: OEM Style
    • Finish: Black
    • Hardware Material: Rubber
    • Internet Product Code (IPC): E837FFCB568
    • Item Grade: Standard Replacement
    • Item has MSDS (SDS): N
    • Length: 3.500
    • Material: Rubber
    • Max Year Covered: 2019
    • MFG Brand Name: Walker Exhaust
    • MFG Model # (Series): 35229
    • MFG Name: Tenneco, Inc
    • Min Year Covered: 1988
    • Most Popular Make / Model: Chevrolet Silverado 1500
    • Most Popular Year: 2007
    • Overall Length: 3.5
    • Package Contents: Insulator
    • Product Grade: Economy
    • Supplier Company Name: Tenneco, Inc
    • Total Part VIO: 21722253
    • Universal Or Specific Fit: Universal
    • UPC: 086387352291
    • Part Description: 2003 GMC Sierra 1500 Rubber Black Exhaust Insulator
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | All Trims | 6 Cyl 4.3L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 4.8L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 5.3L
    Show More
    $5.63
  • OEM 2003 GMC Sierra 1500 Heat Shield Diagram - 12677664
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 1500 Heat Shield

    PartNumber: 12677664
    OEM 2003 GMC Sierra 1500 Heat Shield - 12677664
    Product Specifications
    • Notes: 4.8 Liter Gas;5.3 Liter Gas;6.0 Liter Gas
    • Location: Passenger Side
    • Other Names: Heat Shield
    • Fitment Type: Direct Replacement
    • Replaces: 12648338
    • Part Description: 2003 GMC Sierra 1500 Heat Shield
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | Base, C3, Denali, HT, Hybrid, SL, SLE, SLT, WT, XFE | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L ELECTRIC/GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L ELECTRIC/FLEX, 8 Cyl 6.0 L ELECTRIC/GAS, 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
    $62.88 MSRP: $94.84
    You Save: $31.96 (34%)
  • Walker Heavy Duty Steel Natural U Bolt Clamp for 2003 GMC Sierra 1500 - 35793

    Walker® Heavy Duty Steel Natural U Bolt Clamp for 2003 GMC Sierra 1500

    PartNumber: 35793
    Product Specifications
    • Notes: 2 3/4 Inch
    • Bolt Diameter: 0.375
    • Clamp Design: U-Clamp
    • Clamp Maximum Diameter: 2.75
    • Clamp Type: U-Bolt
    • Finish: Natural
    • Gauge: 11.0
    • Grade Type: Regular
    • Hardware Material: Steel
    • Internet Product Code (IPC): 53860BFD66C
    • Item Grade: OEM Standard
    • Item has MSDS (SDS): N
    • Material: Steel
    • Max Year Covered: 2019
    • MFG Brand Name: Walker Exhaust
    • MFG Model # (Series): 35793
    • MFG Name: Tenneco, Inc
    • Min Year Covered: 1975
    • Most Popular Make / Model: Chevrolet Silverado 1500
    • Most Popular Year: 2007
    • Nut Type: Hex
    • Package Contents: One Exhaust Clamp
    • Pipe Diameter: 2.750
    • Product Grade: Economy
    • Saddle Hole Type: Round
    • Supplier Company Name: Tenneco, Inc
    • Total Part VIO: 29778938
    • UPC: 086387357937
    • Width: 4.125
    • Part Description: 2003 GMC Sierra 1500 Heavy Duty Steel Natural U Bolt Clamp
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | All Trims | 6 Cyl 4.3L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 4.8L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 5.3L
    Show More
    $2.84
  • Bosal Exhaust Pipe Flange Gasket for 2003 GMC Sierra 1500 - 256-1093

    Bosal® Exhaust Pipe Flange Gasket for 2003 GMC Sierra 1500

    PartNumber: 256-1093
    Product Specifications
    • Notes: Between Left Manifold & Left Converter
    • Gasket / Seal Material: Steel
    • Internet Product Code (IPC): 5C7FCA2FF62
    • Item Grade: Standard Replacement
    • Item has MSDS (SDS): No
    • MFG Brand Name: Bosal
    • MFG Model # (Series): 256-1093
    • Package Contents: Gasket
    • Series: Direct-Fit Exhaust
    • Supplier Company Name: Bosal
    • UPC: 623920325536
    • Part Description: 2003 GMC Sierra 1500 Exhaust Pipe Flange Gasket
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 4.8L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 5.3L
    • 2003 GMC Sierra 1500 | All Trims | 6 Cyl 4.3L
    Show More
    $8.99
  • Victor Reinz Exhaust Manifold Gasket Set for 2003 GMC Sierra 1500 - 11-10604-01

    Victor Reinz® Exhaust Manifold Gasket Set for 2003 GMC Sierra 1500

    PartNumber: 11-10604-01
    Product Specifications
    • Bolt Hole Quantity: 6
    • Color: Color May Vary
    • Complete: Y
    • Configuration: Multi Piece
    • Contains Applications: Y
    • Material: Steel
    • Release Wave: 12/15/2017
    • Thickness: 0.065
    • UPC: 023913657574
    • Part Description: 2003 GMC Sierra 1500 Exhaust Manifold Gasket Set
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 4.8L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 5.3L
    • 2003 GMC Sierra 1500 | All Trims | 8 Cyl 6.0L
    Show More
    $16.82
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