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Replacement and OEM Parts for 2018 GMC Sierra 3500 HD Exhaust Manifolds, Pipes, Mufflers & Components

2018 GMC Sierra 3500 HD Exhaust Manifolds, Pipes, Mufflers & Components

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2018 GMC Sierra 3500 HD
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107 products about 2018 GMC Sierra 3500 HD Exhaust Manifolds, Pipes, Mufflers & Components found

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  • OEM (Genuine) 2018 GMC Sierra 3500 HD Gasket, Exhaust Manifold

    PartNumber: 12617944
    OEM 2018 GMC Sierra 3500 HD Gasket, Exhaust Manifold - 12617944
    Product Specifications
    • Notes: 6.0 Liter; Silverado, Sierra; 6.0L
    • Location: Driver Side; Passenger Side
    • Other Names: Exhaust Manifold Gasket, Manifold Gasket
    • Item Dimensions: 19.0 x 3.0 x 0.2 inches
    • Item Weight: 0.70 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 12558573, 12600530
    • Part Description: 2018 GMC Sierra 3500 HD Gasket, Exhaust Manifold
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    $16.42 MSRP: $34.08
    You Save: $17.66 (52%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Mount Insulator

    PartNumber: 15092802
    OEM 2018 GMC Sierra 3500 HD Mount Insulator - 15092802
    Product Specifications
    • Notes: 6.0 Liter; 6.6 Liter Diesel, 3-Hole, Long
    • Item Dimensions: 5.1 x 2.6 x 1.9 inches
    • Item Weight: 0.60 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 15740212
    • Part Description: 2018 GMC Sierra 3500 HD Mount Insulator
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $21.22 MSRP: $33.38
    You Save: $12.16 (37%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Mount Insulator

    PartNumber: 15092802
    OEM 2018 GMC Sierra 3500 HD Mount Insulator - 15092802
    Product Specifications
    • Notes: 6.0 Liter; 6.6 Liter Diesel, 3-Hole, Long
    • Item Dimensions: 5.1 x 2.6 x 1.9 inches
    • Item Weight: 0.60 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 15740212
    • Part Description: 2018 GMC Sierra 3500 HD Mount Insulator
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $21.22 MSRP: $33.38
    You Save: $12.16 (37%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Mount Insulator

    PartNumber: 15092802
    OEM 2018 GMC Sierra 3500 HD Mount Insulator - 15092802
    Product Specifications
    • Notes: 6.0 Liter; 6.6 Liter Diesel, 3-Hole, Long
    • Item Dimensions: 5.1 x 2.6 x 1.9 inches
    • Item Weight: 0.60 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 15740212
    • Part Description: 2018 GMC Sierra 3500 HD Mount Insulator
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $21.22 MSRP: $33.38
    You Save: $12.16 (37%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Mount Insulator

    PartNumber: 15092802
    OEM 2018 GMC Sierra 3500 HD Mount Insulator - 15092802
    Product Specifications
    • Notes: 6.0 Liter; 6.6 Liter Diesel, 3-Hole, Long
    • Item Dimensions: 5.1 x 2.6 x 1.9 inches
    • Item Weight: 0.60 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 15740212
    • Part Description: 2018 GMC Sierra 3500 HD Mount Insulator
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $21.22 MSRP: $33.38
    You Save: $12.16 (37%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD 3Way Catalytic Convertor Assembly (W/Exhaust Pipe)

    PartNumber: 84053221
    OEM 2018 GMC Sierra 3500 HD 3Way Catalytic Convertor Assembly (W/Exhaust Pipe) - 84053221
    Product Specifications
    • Notes: Catalytic Converter; Silverado, Sierra; 6.0L; 3500
    • Other Names: Catalytic Converter
    • Item Dimensions: 63.4 x 33.9 x 15.8 inches
    • Item Weight: 49.20 Pounds
    • Replaced by: 19420277
    • Part Description: 2018 GMC Sierra 3500 HD 3Way Catalytic Convertor Assembly (W/Exhaust Pipe)
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    $2020.25 MSRP: $2851.27
    You Save: $831.02 (30%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD 3Way Catalytic Convertor Assembly (W/Exhaust Pipe)

    PartNumber: 84053221
    OEM 2018 GMC Sierra 3500 HD 3Way Catalytic Convertor Assembly (W/Exhaust Pipe) - 84053221
    Product Specifications
    • Notes: Catalytic Converter; Silverado, Sierra; 6.0L; 3500
    • Other Names: Catalytic Converter
    • Item Dimensions: 63.4 x 33.9 x 15.8 inches
    • Item Weight: 49.20 Pounds
    • Replaced by: 19420277
    • Part Description: 2018 GMC Sierra 3500 HD 3Way Catalytic Convertor Assembly (W/Exhaust Pipe)
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    $2020.25 MSRP: $2851.27
    You Save: $831.02 (30%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD 3Way Catalytic Convertor Assembly (W/Exhaust Pipe)

    PartNumber: 84053221
    OEM 2018 GMC Sierra 3500 HD 3Way Catalytic Convertor Assembly (W/Exhaust Pipe) - 84053221
    Product Specifications
    • Notes: Catalytic Converter; Silverado, Sierra; 6.0L; 3500
    • Other Names: Catalytic Converter
    • Item Dimensions: 63.4 x 33.9 x 15.8 inches
    • Item Weight: 49.20 Pounds
    • Replaced by: 19420277
    • Part Description: 2018 GMC Sierra 3500 HD 3Way Catalytic Convertor Assembly (W/Exhaust Pipe)
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    $2020.25 MSRP: $2851.27
    You Save: $831.02 (30%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Center Muffler Gasket

    PartNumber: 15126137
    OEM 2018 GMC Sierra 3500 HD Center Muffler Gasket - 15126137
    Product Specifications
    • Notes: 6.6 Liter Diesel
    • Item Dimensions: 6.5 x 5.5 x 0.2 inches
    • Item Weight: 2.20 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 15767098
    • Replaced by: 37183442
    • Part Description: 2018 GMC Sierra 3500 HD Center Muffler Gasket
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT, WT | 8 Cyl 6.6 L DIESEL
    $8.61 MSRP: $12.97
    You Save: $4.36 (34%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Center Muffler Gasket

    PartNumber: 15126137
    OEM 2018 GMC Sierra 3500 HD Center Muffler Gasket - 15126137
    Product Specifications
    • Notes: 6.6 Liter Diesel
    • Item Dimensions: 6.5 x 5.5 x 0.2 inches
    • Item Weight: 2.20 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 15767098
    • Replaced by: 37183442
    • Part Description: 2018 GMC Sierra 3500 HD Center Muffler Gasket
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT, WT | 8 Cyl 6.6 L DIESEL
    $8.61 MSRP: $12.97
    You Save: $4.36 (34%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 85165533
    OEM 2018 GMC Sierra 3500 HD Muffler & Pipe - 85165533
    Product Specifications
    • Notes: 6.6 Liter Diesel, Double Cab, 8 Ft Box; Sierra, Silverado; Regular Cab
    • Other Names: Diesel Particulate Filter, Muffler & Pipe
    • Replaces: 84181080
    • Replaced by: 86534411
    • Part Description: 2018 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
    $1574.73 MSRP: $2362.97
    You Save: $788.24 (34%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 85165533
    OEM 2018 GMC Sierra 3500 HD Muffler & Pipe - 85165533
    Product Specifications
    • Notes: 6.6 Liter Diesel, Double Cab, 8 Ft Box; Sierra, Silverado; Regular Cab
    • Other Names: Diesel Particulate Filter, Muffler & Pipe
    • Replaces: 84181080
    • Replaced by: 86534411
    • Part Description: 2018 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
    $1574.73 MSRP: $2362.97
    You Save: $788.24 (34%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 85165533
    OEM 2018 GMC Sierra 3500 HD Muffler & Pipe - 85165533
    Product Specifications
    • Notes: 6.6 Liter Diesel, Double Cab, 8 Ft Box; Sierra, Silverado; Regular Cab
    • Other Names: Diesel Particulate Filter, Muffler & Pipe
    • Replaces: 84181080
    • Replaced by: 86534411
    • Part Description: 2018 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
    $1574.73 MSRP: $2362.97
    You Save: $788.24 (34%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 85165533
    OEM 2018 GMC Sierra 3500 HD Muffler & Pipe - 85165533
    Product Specifications
    • Notes: 6.6 Liter Diesel, Double Cab, 8 Ft Box; Sierra, Silverado; Regular Cab
    • Other Names: Diesel Particulate Filter, Muffler & Pipe
    • Replaces: 84181080
    • Replaced by: 86534411
    • Part Description: 2018 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
    $1574.73 MSRP: $2362.97
    You Save: $788.24 (34%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 85165540
    OEM 2018 GMC Sierra 3500 HD Muffler & Pipe - 85165540
    Product Specifications
    • Notes: 6.6 Liter Diesel, Regular Cab, 8 Ft Box
    • Other Names: Muffler & Pipe
    • Replaces: 84181083
    • Replaced by: 86534417
    • Part Description: 2018 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, SLE | 8 Cyl 6.6 L DIESEL
    $1574.73 MSRP: $2362.97
    You Save: $788.24 (34%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 85165540
    OEM 2018 GMC Sierra 3500 HD Muffler & Pipe - 85165540
    Product Specifications
    • Notes: 6.6 Liter Diesel, Regular Cab, 8 Ft Box
    • Other Names: Muffler & Pipe
    • Replaces: 84181083
    • Replaced by: 86534417
    • Part Description: 2018 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, SLE | 8 Cyl 6.6 L DIESEL
    $1574.73 MSRP: $2362.97
    You Save: $788.24 (34%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 85165540
    OEM 2018 GMC Sierra 3500 HD Muffler & Pipe - 85165540
    Product Specifications
    • Notes: 6.6 Liter Diesel, Regular Cab, 8 Ft Box
    • Other Names: Muffler & Pipe
    • Replaces: 84181083
    • Replaced by: 86534417
    • Part Description: 2018 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, SLE | 8 Cyl 6.6 L DIESEL
    $1574.73 MSRP: $2362.97
    You Save: $788.24 (34%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 85165540
    OEM 2018 GMC Sierra 3500 HD Muffler & Pipe - 85165540
    Product Specifications
    • Notes: 6.6 Liter Diesel, Regular Cab, 8 Ft Box
    • Other Names: Muffler & Pipe
    • Replaces: 84181083
    • Replaced by: 86534417
    • Part Description: 2018 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, SLE | 8 Cyl 6.6 L DIESEL
    $1574.73 MSRP: $2362.97
    You Save: $788.24 (34%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Heat Shield

    PartNumber: 20908786
    OEM 2018 GMC Sierra 3500 HD Heat Shield - 20908786
    Product Specifications
    • Notes: 6.0 Liter, Rear Floor, Crew Cab; 6.6 Liter Diesel, Rear Floor, Crew Cab
    • Other Names: Heat Shield
    • Item Dimensions: 43.8 x 13.8 x 6.9 inches
    • Item Weight: 2.20 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 10361041
    • Part Description: 2018 GMC Sierra 3500 HD Heat Shield
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL
    $27.15 MSRP: $40.96
    You Save: $13.81 (34%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Heat Shield

    PartNumber: 23498620
    OEM 2018 GMC Sierra 3500 HD Heat Shield - 23498620
    Product Specifications
    • Notes: 6.0 Liter, Front Floor; 6.6 Liter Diesel, Front Floor
    • Other Names: Heat Shield
    • Item Dimensions: 47.6 x 5.1 x 16.9 inches
    • Item Weight: 0.90 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 23120901, 15804782, 25988380, 15804781, 20883209, 15893979, 15782417
    • Part Description: 2018 GMC Sierra 3500 HD Heat Shield
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL
    $49.27 MSRP: $74.34
    You Save: $25.07 (34%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 25811684
    OEM 2018 GMC Sierra 3500 HD Muffler & Pipe - 25811684
    Product Specifications
    • Notes: 6.0 Liter, Double Cab, 6.6 Ft Box
    • Other Names: Muffler, Muffler & Pipe
    • Item Dimensions: 123.4 x 27.7 x 18.1 inches
    • Item Weight: 59.90 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2018 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    $879.27 MSRP: $1326.48
    You Save: $447.21 (34%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 25811684
    OEM 2018 GMC Sierra 3500 HD Muffler & Pipe - 25811684
    Product Specifications
    • Notes: 6.0 Liter, Double Cab, 6.6 Ft Box
    • Other Names: Muffler, Muffler & Pipe
    • Item Dimensions: 123.4 x 27.7 x 18.1 inches
    • Item Weight: 59.90 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2018 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    $879.27 MSRP: $1326.48
    You Save: $447.21 (34%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 25811684
    OEM 2018 GMC Sierra 3500 HD Muffler & Pipe - 25811684
    Product Specifications
    • Notes: 6.0 Liter, Double Cab, 6.6 Ft Box
    • Other Names: Muffler, Muffler & Pipe
    • Item Dimensions: 123.4 x 27.7 x 18.1 inches
    • Item Weight: 59.90 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2018 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    $879.27 MSRP: $1326.48
    You Save: $447.21 (34%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 25811684
    OEM 2018 GMC Sierra 3500 HD Muffler & Pipe - 25811684
    Product Specifications
    • Notes: 6.0 Liter, Double Cab, 6.6 Ft Box
    • Other Names: Muffler, Muffler & Pipe
    • Item Dimensions: 123.4 x 27.7 x 18.1 inches
    • Item Weight: 59.90 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2018 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    $879.27 MSRP: $1326.48
    You Save: $447.21 (34%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 25811687
    OEM 2018 GMC Sierra 3500 HD Muffler & Pipe - 25811687
    Product Specifications
    • Notes: 6.0 Liter, Crew Cab, 8 Ft Box
    • Other Names: Muffler, Muffler & Pipe
    • Item Dimensions: 144.1 x 27.7 x 17.9 inches
    • Item Weight: 69.30 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2018 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    $884.05 MSRP: $1333.68
    You Save: $449.63 (34%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 25811687
    OEM 2018 GMC Sierra 3500 HD Muffler & Pipe - 25811687
    Product Specifications
    • Notes: 6.0 Liter, Crew Cab, 8 Ft Box
    • Other Names: Muffler, Muffler & Pipe
    • Item Dimensions: 144.1 x 27.7 x 17.9 inches
    • Item Weight: 69.30 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2018 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    $884.05 MSRP: $1333.68
    You Save: $449.63 (34%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 25811687
    OEM 2018 GMC Sierra 3500 HD Muffler & Pipe - 25811687
    Product Specifications
    • Notes: 6.0 Liter, Crew Cab, 8 Ft Box
    • Other Names: Muffler, Muffler & Pipe
    • Item Dimensions: 144.1 x 27.7 x 17.9 inches
    • Item Weight: 69.30 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2018 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    $884.05 MSRP: $1333.68
    You Save: $449.63 (34%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 25811687
    OEM 2018 GMC Sierra 3500 HD Muffler & Pipe - 25811687
    Product Specifications
    • Notes: 6.0 Liter, Crew Cab, 8 Ft Box
    • Other Names: Muffler, Muffler & Pipe
    • Item Dimensions: 144.1 x 27.7 x 17.9 inches
    • Item Weight: 69.30 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2018 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    $884.05 MSRP: $1333.68
    You Save: $449.63 (34%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 25811685
    OEM 2018 GMC Sierra 3500 HD Muffler & Pipe - 25811685
    Product Specifications
    • Notes: 6.0 Liter, Crew Cab, 6.6 Ft Box
    • Other Names: Muffler & Pipe
    • Item Dimensions: 128.4 x 28.0 x 18.1 inches
    • Item Weight: 67.00 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2018 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    $951.88 MSRP: $1436.02
    You Save: $484.14 (34%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Muffler & Pipe

    PartNumber: 25811685
    OEM 2018 GMC Sierra 3500 HD Muffler & Pipe - 25811685
    Product Specifications
    • Notes: 6.0 Liter, Crew Cab, 6.6 Ft Box
    • Other Names: Muffler & Pipe
    • Item Dimensions: 128.4 x 28.0 x 18.1 inches
    • Item Weight: 67.00 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2018 GMC Sierra 3500 HD Muffler & Pipe
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    $951.88 MSRP: $1436.02
    You Save: $484.14 (34%)
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