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Replacement and OEM Parts for 2003 GMC Sierra 2500 HD Cooling Systems, Fans, Radiators & Components

2003 GMC Sierra 2500 HD Cooling Systems, Fans, Radiators & Components

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Engine & Drivetrain

230 products about 2003 GMC Sierra 2500 HD Cooling Systems, Fans, Radiators & Components found

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  • OEM 2003 GMC Sierra 2500 HD Fan Switch Diagram - 15326386
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 2500 HD Fan Switch

    PartNumber: 15326386
    OEM 2003 GMC Sierra 2500 HD Fan Switch - 15326386
    Product Specifications
    • Notes: All Models; 6.6l
    • Item Dimensions: 2.9 x 1.2 x 0.8 inches
    • Item Weight: 0.50 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 25036979, 12146312
    • Part Description: 2003 GMC Sierra 2500 HD Fan Switch
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | Base, SL, SLE, SLT, WT | 8 Cyl 6.6 L DIESEL
    $27.05 MSRP: $51.06
    You Save: $24.01 (48%)
  • OEM 2003 GMC Sierra 2500 HD Sensor Diagram - 12608814
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 2500 HD Sensor

    PartNumber: 12608814
    OEM 2003 GMC Sierra 2500 HD Sensor - 12608814
    Product Specifications
    • Notes: All Models; 4.8l, 5.3l, 6.0l
    • Item Dimensions: 2.8 x 1.7 x 0.8 inches
    • Item Weight: 0.40 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 25037062, 12191170, 15326388, 15369305
    • Part Description: 2003 GMC Sierra 2500 HD Sensor
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | Base, Denali, SL, SLE, SLT, WT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL
    $30.68 MSRP: $57.90
    You Save: $27.22 (48%)
  • OEM 2003 GMC Sierra 2500 HD Water Pump Assembly Gasket Diagram - 12630223
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 2500 HD Water Pump Assembly Gasket

    PartNumber: 12630223
    OEM 2003 GMC Sierra 2500 HD Water Pump Assembly Gasket - 12630223
    Product Specifications
    • Notes: 4.8, 5.3 & 6.0 Liter
    • Item Dimensions: 4.6 x 3.3 x 0.2 inches
    • Item Weight: 0.30 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 12580035, 12588372, 12559271, 12610311
    • Part Description: 2003 GMC Sierra 2500 HD Water Pump Assembly Gasket
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | Base, Denali, SL, SLE, SLT, WT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    $6.96 MSRP: $12.59
    You Save: $5.63 (45%)
  • OEM 2003 GMC Sierra 2500 HD Water Pump Assembly Gasket Diagram - 12630223
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 2500 HD Water Pump Assembly Gasket

    PartNumber: 12630223
    OEM 2003 GMC Sierra 2500 HD Water Pump Assembly Gasket - 12630223
    Product Specifications
    • Notes: 4.8, 5.3 & 6.0 Liter
    • Item Dimensions: 4.6 x 3.3 x 0.2 inches
    • Item Weight: 0.30 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 12580035, 12588372, 12559271, 12610311
    • Part Description: 2003 GMC Sierra 2500 HD Water Pump Assembly Gasket
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | Base, Denali, SL, SLE, SLT, WT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    $6.96 MSRP: $12.59
    You Save: $5.63 (45%)
  • OEM 2003 GMC Sierra 2500 HD Thermostat Diagram - 97241130
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 2500 HD Thermostat

    PartNumber: 97241130
    OEM 2003 GMC Sierra 2500 HD Thermostat - 97241130
    Product Specifications
    • Notes: All Models; 6.6l; Rear; 6.6 Liter Turbo Diesel, Rear
    • Other Names: Thermostat
    • Item Dimensions: 3.2 x 3.1 x 3.1 inches
    • Item Weight: 0.70 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2003 GMC Sierra 2500 HD Thermostat
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | AT4, Base, Denali, SL, SLE, SLT, WT | 8 Cyl 6.6 L DIESEL
    $31.67 MSRP: $59.78
    You Save: $28.11 (48%)
  • OEM 2003 GMC Sierra 2500 HD Thermostat Diagram - 97241130
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 2500 HD Thermostat

    PartNumber: 97241130
    OEM 2003 GMC Sierra 2500 HD Thermostat - 97241130
    Product Specifications
    • Notes: All Models; 6.6l; Rear; 6.6 Liter Turbo Diesel, Rear
    • Other Names: Thermostat
    • Item Dimensions: 3.2 x 3.1 x 3.1 inches
    • Item Weight: 0.70 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2003 GMC Sierra 2500 HD Thermostat
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | AT4, Base, Denali, SL, SLE, SLT, WT | 8 Cyl 6.6 L DIESEL
    $31.67 MSRP: $59.78
    You Save: $28.11 (48%)
  • Dorman OE Solutions Diesel Oil Cooler for 2003 GMC Sierra 2500 HD - 918-400

    Dorman® OE Solutions Diesel Oil Cooler for 2003 GMC Sierra 2500 HD

    PartNumber: 918-400
    Product Specifications
    • Color or Finish: Silver
    • Cooler Inlet Size: 0.72"
    • Cooler Outlet Size: 0.72"
    • Cooling Row Quantity: 11
    • Core Tube Width: 0.155"
    • Depth: 2.35"
    • Diameter (in): 0.72"
    • Finish: Brushed Metal
    • Height: 3.281"
    • Inlet Fitting Type: Female
    • Installation Hardware Included: Yes
    • Item Grade: Standard Replacement
    • Material: Aluminum
    • OE Part Number: 12649227, 19210615
    • Outlet Fitting Type: Female
    • Thickness (in): 3.096"
    • UPC: 019495387121
    • Width (in): 3.096"
    • Part Description: 2003 GMC Sierra 2500 HD OE Solutions Diesel Oil Cooler
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.6L
    $248.31
  • Dorman Cooling Fan Pulley Bracket for 2003 GMC Sierra 2500 HD - 300-825

    Dorman® Cooling Fan Pulley Bracket for 2003 GMC Sierra 2500 HD

    PartNumber: 300-825
    Product Specifications
    • Material: Iron
    • Mounting Hardware Included: No
    • OE Part Number: 97226289
    • Package Contents: 1 Fan Pulley Bracket
    • UPC: 885484738751
    • Part Description: 2003 GMC Sierra 2500 HD Cooling Fan Pulley Bracket
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.6L
    $179.05
  • OEM 2003 GMC Sierra 2500 HD Thermostat Diagram - 97241129
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 2500 HD Thermostat

    PartNumber: 97241129
    OEM 2003 GMC Sierra 2500 HD Thermostat - 97241129
    Product Specifications
    • Notes: All Models; 6.6l; Front; 6.6 Liter Turbo Diesel, Front
    • Other Names: Thermostat
    • Item Dimensions: 3.2 x 3.2 x 3.2 inches
    • Item Weight: 0.70 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2003 GMC Sierra 2500 HD Thermostat
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | Base, Denali, SL, SLE, SLT, WT | 8 Cyl 6.6 L DIESEL
    $33.70 MSRP: $68.40
    You Save: $34.70 (51%)
  • OEM 2003 GMC Sierra 2500 HD Thermostat Diagram - 97241129
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 2500 HD Thermostat

    PartNumber: 97241129
    OEM 2003 GMC Sierra 2500 HD Thermostat - 97241129
    Product Specifications
    • Notes: All Models; 6.6l; Front; 6.6 Liter Turbo Diesel, Front
    • Other Names: Thermostat
    • Item Dimensions: 3.2 x 3.2 x 3.2 inches
    • Item Weight: 0.70 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2003 GMC Sierra 2500 HD Thermostat
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | Base, Denali, SL, SLE, SLT, WT | 8 Cyl 6.6 L DIESEL
    $33.70 MSRP: $68.40
    You Save: $34.70 (51%)
  • Dorman OE Solutions Inlet Outlet Oil Cooler Line for 2003 GMC Sierra 2500 HD - 625-168

    Dorman® OE Solutions Inlet Outlet Oil Cooler Line for 2003 GMC Sierra 2500 HD

    PartNumber: 625-168
    Product Specifications
    • Color or Finish: Natural
    • Hose Attachment End 1: Block Connector
    • Hose Attachment End 2: Quick Disconnect
    • Hose Material: Rubber/Metal
    • Hose Overall Length (In): 8"
    • OE Part Number: 15203890, 15765439
    • UPC: 019495063698
    • Part Description: 2003 GMC Sierra 2500 HD OE Solutions Inlet Outlet Oil Cooler Line
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.0L
    $86.83
  • OEM 2003 GMC Sierra 2500 HD Lower Hose Diagram - 22827735
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 2500 HD Lower Hose

    PartNumber: 22827735
    OEM 2003 GMC Sierra 2500 HD Lower Hose - 22827735
    Product Specifications
    • Notes: All Models; 4.8l, 5.3l, 6.0l; 4.8, 5.3 & 6.0 Liter
    • Other Names: Lower Hose
    • Item Dimensions: 5.8 x 4.4 x 14.9 inches
    • Item Weight: 1.40 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 15037656, 15792826, 15769077, 19130015
    • Part Description: 2003 GMC Sierra 2500 HD Lower Hose
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | Base, Denali, SL, SLE, SLT, WT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    $33.96 MSRP: $51.23
    You Save: $17.27 (34%)
  • OEM 2003 GMC Sierra 2500 HD Lower Hose Diagram - 22827735
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 2500 HD Lower Hose

    PartNumber: 22827735
    OEM 2003 GMC Sierra 2500 HD Lower Hose - 22827735
    Product Specifications
    • Notes: All Models; 4.8l, 5.3l, 6.0l; 4.8, 5.3 & 6.0 Liter
    • Other Names: Lower Hose
    • Item Dimensions: 5.8 x 4.4 x 14.9 inches
    • Item Weight: 1.40 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 15037656, 15792826, 15769077, 19130015
    • Part Description: 2003 GMC Sierra 2500 HD Lower Hose
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | Base, Denali, SL, SLE, SLT, WT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    $33.96 MSRP: $51.23
    You Save: $17.27 (34%)
  • Denso Engine Coolant Radiator for 2003 GMC Sierra 2500 HD - 221-9010

    Denso® Engine Coolant Radiator for 2003 GMC Sierra 2500 HD

    PartNumber: 221-9010
    Product Specifications
    • Core Height: 17.0470"
    • Core Thickness: 1.0620"
    • Core Width: 33.9300"
    • Inlet Diameter: 1.3380"
    • Outlet Diameter: 1.5550"
    • UPC: 042511219502
    • Part Description: 2003 GMC Sierra 2500 HD Engine Coolant Radiator
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.0L
    $150.24
  • Gates Engine Coolant Molded Radiator Hose for 2003 GMC Sierra 2500 HD - 22927

    Gates® Engine Coolant Molded Radiator Hose for 2003 GMC Sierra 2500 HD

    PartNumber: 22927
    Product Specifications
    • Branch Quantity: 2
    • Contains Spring: No
    • End 1 Inside Diameter: 1.78 in
    • End 2 Inside Diameter: 1.78 in
    • End 3 Inside Diameter: 1 in
    • End 4 Inside Diameter: 0.62 in
    • Material: EPDM, Plastic, Steel
    • Modular Components: Branch, Female Quick Connector
    • Modular Hose: Yes
    • Molded: Yes
    • Number of Quick Connect Fittings: 1
    • OE Part Number: 48124
    • UPC: 072053582086
    • Part Description: 2003 GMC Sierra 2500 HD Engine Coolant Molded Radiator Hose
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 8.1L
    $147.98
  • Gates Engine Coolant Standard Water Pump for 2003 GMC Sierra 2500 HD - 42349BH

    Gates® Engine Coolant Standard Water Pump for 2003 GMC Sierra 2500 HD

    PartNumber: 42349BH
    Product Specifications
    • Notes: Incls Back Housing
    • Housing: Cast Aluminum
    • Impeller Material: Cast Iron
    • Number of Outlets: 2
    • Rotation of Impeller: Reverse
    • Timing Belt Driven: No
    • UPC: 770075420309
    • Part Description: 2003 GMC Sierra 2500 HD Engine Coolant Standard Water Pump
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.6L
    $123.39
  • Dorman Engine Cooling Fan Blade for 2003 GMC Sierra 2500 HD - 621-514

    Dorman® Engine Cooling Fan Blade for 2003 GMC Sierra 2500 HD

    PartNumber: 621-514
    Product Specifications
    • Blades Count: 9
    • Color: Black
    • Diameter: 20.87"
    • Installation Hardware Included: No
    • Item Grade: Standard Replacement
    • Material: Plastic
    • OE Part Number: 15010202
    • Package Contents: Fan Blade
    • UPC: 037495598224
    • Part Description: 2003 GMC Sierra 2500 HD Engine Cooling Fan Blade
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.6L
    $69.97
  • Dorman Engine Coolant Recovery Tank for 2003 GMC Sierra 2500 HD - 603-102

    Dorman® Engine Coolant Recovery Tank for 2003 GMC Sierra 2500 HD

    PartNumber: 603-102
    Product Specifications
    • Cap Maximum Pressure Rating: 15 PSI
    • Cap Type: Spring Loaded Twist
    • Color: Clear
    • Height: 186 mm
    • Length: 235 mm
    • Material: Plastic
    • Mount Hole Quantity: 1
    • OE Part Number: RC98, 15808715, 15808716, 15203949, 15778386
    • Pressurized: Yes
    • UPC: 019495095279
    • Part Description: 2003 GMC Sierra 2500 HD Engine Coolant Recovery Tank
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.0L
    • 2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 8.1L
    $56.34
  • Delphi Coolant Temperature Sensor for 2003 GMC Sierra 2500 HD - TS10076

    Delphi® Coolant Temperature Sensor for 2003 GMC Sierra 2500 HD

    PartNumber: TS10076
    Product Specifications
    • Connector Gender: Female
    • Connector Quantity: 1
    • Connector Shape: Oval
    • Mounting Type: Threaded Nut
    • OE Part Number: 15369305
    • Terminal Gender: Male
    • Terminal Quantity: 2
    • Terminal Type: Pin
    • UPC: 689604110416
    • Wiring Harness Included: No
    • Part Description: 2003 GMC Sierra 2500 HD Coolant Temperature Sensor
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.0L
    $20.68
  • TYC Engine Coolant Radiator for 2003 GMC Sierra 2500 HD - 2757

    TYC® Engine Coolant Radiator for 2003 GMC Sierra 2500 HD

    PartNumber: 2757
    Product Specifications
    • Notes: 1 Row Equivalent
    • Bottom Header: 3.16" x 20.66"
    • Core Height: 19.41"
    • Core Length: 34.09"
    • Core Material: Aluminum
    • Core Thickness: 2.20"
    • EOC (Yes/No): No
    • Fin Count (Every 4"): 64: 64
    • Fin Wave Height: 0.35"
    • Find Wave Pitch: 3.2
    • Flow Configuration: Crossflow
    • Inlet Connection Type: Hose Clamp
    • Inlet Diameter: 1.81"
    • OE Part Number: 15914079, GM3010285
    • Outlet Connection Type: Hose Clamp
    • Outlet Diameter: 1.81"
    • Rows: 1
    • TOC (Yes/No): Yes
    • TOC Distance: 11.50"
    • TOC Inlet Diameter: 0.88"
    • Toc Inlet Type: Quick Connect
    • TOC Outlet Diameter: 0.88"
    • Toc Outlet Type: Quick Connect
    • TOC type: Plate Oil Cooler
    • Top Header: 3.16" x 20.66"
    • Total Fin Row Count: 45
    • Total Tube Count: 44
    • Tube Count (Every 4"): 10: 10
    • Tube Width x Height: 26" x 2"
    • UPC: 762405912233
    • Part Description: 2003 GMC Sierra 2500 HD Engine Coolant Radiator
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.6L
    $197.70
  • OEM 2003 GMC Sierra 2500 HD Recovery Tank Cap Diagram - 15075118
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 2500 HD Recovery Tank Cap

    PartNumber: 15075118
    OEM 2003 GMC Sierra 2500 HD Recovery Tank Cap - 15075118
    Product Specifications
    • Notes: All Models; 4.8, 5.3 & 6.0 Liter; 8.1 Liter Gas; 6.6 Liter Turbo Diesel
    • Item Dimensions: 2.5 x 2.5 x 1.5 inches
    • Item Weight: 0.50 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 22671020, 22652695, 15066786
    • Part Description: 2003 GMC Sierra 2500 HD Recovery Tank Cap
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
    $13.10 MSRP: $24.70
    You Save: $11.60 (47%)
  • Gates Engine Coolant Standard Water Pump for 2003 GMC Sierra 2500 HD - 45006

    Gates® Engine Coolant Standard Water Pump for 2003 GMC Sierra 2500 HD

    PartNumber: 45006
    Product Specifications
    • Notes: w/Thermostat & Housing
    • Housing: Cast Aluminum
    • Impeller Material: Stamped Steel
    • Number of Outlets: 2
    • Rotation of Impeller: Reverse
    • Timing Belt Driven: No
    • UPC: 072053781632
    • Part Description: 2003 GMC Sierra 2500 HD Engine Coolant Standard Water Pump
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.0L
    $110.08
  • Dayco Engine Coolant Water Pump for 2003 GMC Sierra 2500 HD - DP998

    Dayco® Engine Coolant Water Pump for 2003 GMC Sierra 2500 HD

    PartNumber: DP998
    Product Specifications
    • Notes: Serpentine Belt Driven; Thermostat Bore Dia 47mm
    • UPC: 036687990730
    • Part Description: 2003 GMC Sierra 2500 HD Engine Coolant Water Pump
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.0L
    $114.72
  • Dorman OE Solutions Oil Cooler Line for 2003 GMC Sierra 2500 HD - 625-303

    Dorman® OE Solutions Oil Cooler Line for 2003 GMC Sierra 2500 HD

    PartNumber: 625-303
    Product Specifications
    • Notes: w/UCT Tag
    • Color or Finish: Natural
    • Hose Attachment End 1: Male Quick Disconnect
    • Hose Attachment End 2: Male Quick Disconnect
    • Hose Material: Rubber/Metal
    • Hose Overall Length (In): 48"
    • OE Part Number: 15809062
    • UPC: 019495291770
    • Part Description: 2003 GMC Sierra 2500 HD OE Solutions Oil Cooler Line
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 8.1L
    $52.09
  • Four Seasons Thermal Engine Cooling Fan Clutch for 2003 GMC Sierra 2500 HD - 36786

    Four Seasons® Thermal Engine Cooling Fan Clutch for 2003 GMC Sierra 2500 HD

    PartNumber: 36786
    Product Specifications
    • Notes: Reverse Rotation; Severe Duty Thermal Fan Clutch
    • Bolt Hole Quantity: 4
    • Bolt Quantity: 4
    • Bolt Thread: M8 x 1.25 Hole
    • Clutch Maximum Diameter: 7.4
    • Clutch Type: D - Severe Duty & Truck Fan Drive
    • Color: Raw Aluminum in Color
    • Distance From Clutch To Mounting Flange: 1.75
    • Electronic Clutch: Non Electronic
    • Fan Bolt Circle IN: 3.81
    • Fan Bolt Circle MM: 96.8
    • Material: Aluminum
    • Meets / Exceeds OEM: Yes
    • Mount Dia. IN: 1.86 HEX
    • Mount Dia. MM: 47 HEX
    • Mounting Hardware: Not Included
    • Mounting Hole Quantity: 4
    • Mounting Type: HEX
    • New or Reman: New
    • Overall Dia. MM: 188
    • Overall Height IN: 4.27
    • Overall Height MM: 108.3
    • Performance Rated: Yes
    • Pilot Depth IN: 0.78; 0.79
    • Pilot Depth MM: 20.1
    • Pilot Dia. IN: M36x2.000
    • Rotation: REV
    • SDS Required: No (135233618)
    • Style: Severe Duty
    • UPC: 096361367869
    • Use Type: Severe
    • Part Description: 2003 GMC Sierra 2500 HD Thermal Engine Cooling Fan Clutch
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.6L
    $98.15
  • Four Seasons Auxiliary Engine Cooling Fan for 2003 GMC Sierra 2500 HD - 37140

    Four Seasons® Auxiliary Engine Cooling Fan for 2003 GMC Sierra 2500 HD

    PartNumber: 37140
    Product Specifications
    • Notes: Universal Fit Super Duty Electric Puller Auxiliary Fan. Add on fans used to supplement the primary Eng cooling fan. Incls mounting hardware. Controls not Incld.
    • Material: Plastic
    • Performance Rated: Yes
    • SDS Required: No (135233618)
    • UPC: 096361089945
    • Part Description: 2003 GMC Sierra 2500 HD Auxiliary Engine Cooling Fan
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | All Trims | All Engines
    $91.74
  • OEM 2003 GMC Sierra 2500 HD Pipe Assembly Gasket Diagram - 15203889
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 2500 HD Pipe Assembly Gasket

    PartNumber: 15203889
    OEM 2003 GMC Sierra 2500 HD Pipe Assembly Gasket - 15203889
    Product Specifications
    • Notes: 4.8, 5.3 & 6.0 Liter, 6.0 Liter
    • Item Dimensions: 3.2 x 1.7 x 0.2 inches
    • Item Weight: 0.30 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 12560438
    • Part Description: 2003 GMC Sierra 2500 HD Pipe Assembly Gasket
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
    $6.43 MSRP: $10.64
    You Save: $4.21 (40%)
  • Victor Reinz Engine Coolant Water Pump Installation Kit for 2003 GMC Sierra 2500 HD - 18-10033-01

    Victor Reinz® Engine Coolant Water Pump Installation Kit for 2003 GMC Sierra 2500 HD

    PartNumber: 18-10033-01
    Product Specifications
    • Gasket Bolt Hole Quantity: 4
    • Gasket Color: Color May Vary
    • Gasket Material: Rubber Coated Metal
    • Gasket Thickness (IN): 0.018 in
    • Meets or Exceeds OEM Specs: Y
    • UPC: 023913758066
    • Part Description: 2003 GMC Sierra 2500 HD Engine Coolant Water Pump Installation Kit
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.6L
    $24.07
  • Delphi Coolant Temperature Sensor for 2003 GMC Sierra 2500 HD - TS10075

    Delphi® Coolant Temperature Sensor for 2003 GMC Sierra 2500 HD

    PartNumber: TS10075
    Product Specifications
    • Connector Gender: Female
    • Connector Quantity: 1
    • Connector Shape: Oval
    • Mounting Type: Threaded Nut
    • Terminal Gender: Male
    • Terminal Quantity: 2
    • Terminal Type: Pin
    • UPC: 689604110423
    • Wiring Harness Included: No
    • Part Description: 2003 GMC Sierra 2500 HD Coolant Temperature Sensor
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | SLE | 8 Cyl 6.6L
    • 2003 GMC Sierra 2500 HD | SLT | 8 Cyl 6.6L
    • 2003 GMC Sierra 2500 HD | Base | 8 Cyl 6.6L
    • 2003 GMC Sierra 2500 HD | WT | 8 Cyl 6.6L
    Show More
    $18.49
  • Gates Engine Coolant Standard Water Pump for 2003 GMC Sierra 2500 HD - 45005

    Gates® Engine Coolant Standard Water Pump for 2003 GMC Sierra 2500 HD

    PartNumber: 45005
    Product Specifications
    • Notes: w/o Thermostat & Housing; May Req Thermostat/Housing Replacement
    • Housing: Cast Aluminum
    • Impeller Material: Stamped Steel
    • Number of Outlets: 4
    • Rotation of Impeller: Reverse
    • Timing Belt Driven: No
    • UPC: 072053781625
    • Part Description: 2003 GMC Sierra 2500 HD Engine Coolant Standard Water Pump
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.0L
    $87.70
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