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Replacement and OEM Parts for 2021 GMC Sierra 3500 HD Exhaust Pipe

2021 GMC Sierra 3500 HD Exhaust Pipe

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2021 GMC Sierra 3500 HD
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Exhaust Manifolds, Pipes & Mufflers
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  • OEM 2021 GMC Sierra 3500 HD Converter & Pipe Diagram - 84653314
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    OEM (Genuine) 2021 GMC Sierra 3500 HD Converter & Pipe

    PartNumber: 84653314
    OEM 2021 GMC Sierra 3500 HD Converter & Pipe - 84653314
    Product Specifications
    • Notes: 6.6 Liter Gas; Silverado, Sierra 3500 Hd; Gas
    • Other Names: Catalytic Converter, Converter & Pipe
    • Item Dimensions: 63.9 x 33.3 x 17.0 inches
    • Item Weight: 46.30 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2021 GMC Sierra 3500 HD Converter & Pipe
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS
    $1952.09 MSRP: $2931.67
    You Save: $979.58 (34%)
  • OEM 2021 GMC Sierra 3500 HD Muffler & Pipe Diagram - 84572772
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    OEM (Genuine) 2021 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 84572772
    OEM 2021 GMC Sierra 3500 HD Muffler & Pipe - 84572772
    Product Specifications
    • Other Names: Diesel Particulate Filter, Muffler & Pipe
    • Item Dimensions: 163.2 x 45.5 x 37.1 inches
    • Item Weight: 70.70 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 86534424
    • Part Description: 2021 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
    $1103.89 MSRP: $1653.13
    You Save: $549.24 (34%)
  • OEM 2021 GMC Sierra 3500 HD Converter & Pipe Diagram - 84341182
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Converter & Pipe

    PartNumber: 84341182
    OEM 2021 GMC Sierra 3500 HD Converter & Pipe - 84341182
    Product Specifications
    • Notes: 6.6 Liter Diesel; Silverado, Sierra 3500 Hd; Diesel; Nox Converter
    • Other Names: Catalytic Converter, Converter & Pipe
    • Item Dimensions: 55.4 x 13.9 x 10.2 inches
    • Item Weight: 43.00 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2021 GMC Sierra 3500 HD Converter & Pipe
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
    $510.54 MSRP: $757.39
    You Save: $246.85 (33%)
  • OEM 2021 GMC Sierra 3500 HD Front Pipe Diagram - 12671086
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    OEM (Genuine) 2021 GMC Sierra 3500 HD Front Pipe

    PartNumber: 12671086
    OEM 2021 GMC Sierra 3500 HD Front Pipe - 12671086
    Product Specifications
    • Notes: Silverado, Sierra 3500 Hd; Diesel; 6.6 Liter Diesel, Turbo Exhaust Outlet
    • Other Names: Exhaust Pipe, Front Pipe
    • Item Dimensions: 18.7 x 6.4 x 4.8 inches
    • Fitment Type: Direct Replacement
    • Part Description: 2021 GMC Sierra 3500 HD Front Pipe
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
    $186.67 MSRP: $281.62
    You Save: $94.95 (34%)
  • OEM 2021 GMC Sierra 3500 HD Muffler & Pipe Diagram - 84021294
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 84021294
    OEM 2021 GMC Sierra 3500 HD Muffler & Pipe - 84021294
    Product Specifications
    • Notes: Silverado, Sierra 3500 Hd; Gas; Double Cab; Short Box
    • Other Names: Muffler, Muffler & Pipe
    • Fitment Type: Direct Replacement
    • Part Description: 2021 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS
    $615.84 MSRP: $929.07
    You Save: $313.23 (34%)
  • OEM 2021 GMC Sierra 3500 HD Muffler & Pipe Diagram - 84021295
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 84021295
    OEM 2021 GMC Sierra 3500 HD Muffler & Pipe - 84021295
    Product Specifications
    • Notes: 6.6 Liter Gas, Crew Cab, 6.9 Ft Box; Silverado, Sierra 3500 Hd; Gas; Crew Cab; Short Box
    • Other Names: Muffler, Muffler & Pipe
    • Fitment Type: Direct Replacement
    • Part Description: 2021 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS
    $535.97 MSRP: $808.58
    You Save: $272.61 (34%)
  • OEM 2021 GMC Sierra 3500 HD Muffler & Pipe Diagram - 84021293
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 84021293
    OEM 2021 GMC Sierra 3500 HD Muffler & Pipe - 84021293
    Product Specifications
    • Notes: 6.6 Liter Gas, Regular Cab; Silverado, Sierra 3500 Hd; Gas; Regular Cab
    • Other Names: Muffler, Muffler & Pipe
    • Fitment Type: Direct Replacement
    • Part Description: 2021 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS
    $508.26 MSRP: $766.77
    You Save: $258.51 (34%)
  • OEM 2021 GMC Sierra 3500 HD Muffler & Pipe Diagram - 84021296
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    OEM (Genuine) 2021 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 84021296
    OEM 2021 GMC Sierra 3500 HD Muffler & Pipe - 84021296
    Product Specifications
    • Notes: 6.6 Liter Gas, Double Cab; Silverado, Sierra 3500 Hd; Gas; Double Cab; Long Box
    • Other Names: Muffler, Muffler & Pipe
    • Fitment Type: Direct Replacement
    • Part Description: 2021 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS
    $503.34 MSRP: $759.35
    You Save: $256.01 (34%)
  • OEM 2021 GMC Sierra 3500 HD Muffler & Pipe Diagram - 84021297
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 84021297
    OEM 2021 GMC Sierra 3500 HD Muffler & Pipe - 84021297
    Product Specifications
    • Notes: 6.6 Liter Gas, Crew Cab, 8 Ft Box; Silverado, Sierra 3500 Hd; Gas; Crew Cab; Long Box
    • Other Names: Muffler, Muffler & Pipe
    • Fitment Type: Direct Replacement
    • Part Description: 2021 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS
    $498.50 MSRP: $752.05
    You Save: $253.55 (34%)
  • OEM 2021 GMC Sierra 3500 HD Tailpipe Extension Diagram - 84521837
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    OEM (Genuine) 2021 GMC Sierra 3500 HD Tailpipe Extension

    PartNumber: 84521837
    OEM 2021 GMC Sierra 3500 HD Tailpipe Extension - 84521837
    Product Specifications
    • Notes: 6.6 Liter Gas, Dual Outlet
    • Other Names: Tailpipe Extension
    • Material: Stainless Steel
    • Fitment Type: Direct Replacement
    • Product Grade: Performance Parts
    • Part Description: 2021 GMC Sierra 3500 HD Tailpipe Extension
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS
    $285.91 MSRP: $345.00
    You Save: $59.09 (18%)
  • OEM 2021 GMC Sierra 3500 HD Muffler & Pipe Diagram - 84612879
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 84612879
    OEM 2021 GMC Sierra 3500 HD Muffler & Pipe - 84612879
    Product Specifications
    • Notes: 6.6 Liter Diesel, Regular Cab; Silverado, Sierra 3500 Hd; Regular Cab
    • Other Names: Diesel Particulate Filter, Muffler & Pipe
    • Replaced by: 86534428
    • Part Description: 2021 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
    $934.31 MSRP: $1397.35
    You Save: $463.04 (34%)
  • OEM 2021 GMC Sierra 3500 HD Muffler & Pipe Diagram - 84612885
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 84612885
    OEM 2021 GMC Sierra 3500 HD Muffler & Pipe - 84612885
    Product Specifications
    • Other Names: Diesel Particulate Filter, Muffler & Pipe
    • Fitment Type: Direct Replacement
    • Replaces: 84341175
    • Replaced by: 86534451
    • Part Description: 2021 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
    $821.07 MSRP: $1226.55
    You Save: $405.48 (34%)
  • OEM 2021 GMC Sierra 3500 HD Muffler & Pipe Diagram - 84612887
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 84612887
    OEM 2021 GMC Sierra 3500 HD Muffler & Pipe - 84612887
    Product Specifications
    • Notes: 6.6 Liter Diesel, Crew Cab, 8 Ft Box; Silverado, Sierra 3500 Hd; Crew Cab; Long Box
    • Other Names: Diesel Particulate Filter, Muffler & Pipe
    • Fitment Type: Direct Replacement
    • Replaced by: 86534453
    • Part Description: 2021 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
    $842.76 MSRP: $1259.26
    You Save: $416.50 (34%)
  • OEM 2021 GMC Sierra 3500 HD Tailpipe Extension Diagram - 84722772
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Tailpipe Extension

    PartNumber: 84722772
    OEM 2021 GMC Sierra 3500 HD Tailpipe Extension - 84722772
    Product Specifications
    • Notes: 6.6 Liter Gas, Single Outlet, Chrome
    • Other Names: Tailpipe Extension
    • Item Dimensions: 13.7 x 6.8 x 6.2 inches
    • Item Weight: 4.20 Pounds
    • Material: Stainless Steel
    • Fitment Type: Direct Replacement
    • Replaces: 84486314
    • Product Grade: Performance Parts
    • Part Description: 2021 GMC Sierra 3500 HD Tailpipe Extension
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS
    $116.02 MSRP: $140.00
    You Save: $23.98 (18%)
  • OEM 2021 GMC Sierra 3500 HD Tailpipe Extension Diagram - 84521824
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Tailpipe Extension

    PartNumber: 84521824
    OEM 2021 GMC Sierra 3500 HD Tailpipe Extension - 84521824
    Product Specifications
    • Notes: 6.6 Liter Gas, Single Outlet, Black
    • Other Names: Tailpipe Extension
    • Item Dimensions: 13.4 x 6.7 x 6.1 inches
    • Item Weight: 3.70 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 84520928
    • Product Grade: Performance Parts
    • Part Description: 2021 GMC Sierra 3500 HD Tailpipe Extension
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS