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Replacement and OEM Parts for 2018 GMC Sierra 3500 HD Exhaust Manifold

2018 GMC Sierra 3500 HD Exhaust Manifold

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2018 GMC Sierra 3500 HD
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Exhaust Manifolds, Pipes & Mufflers
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  • OEM 2018 GMC Sierra 3500 HD Exhaust Manifold Diagram - 12686303
    View Related Parts

    OEM (Genuine) 2018 GMC Sierra 3500 HD Exhaust Manifold

    PartNumber: 12686303
    OEM 2018 GMC Sierra 3500 HD Exhaust Manifold - 12686303
    Product Specifications
    • Notes: 6.0 Liter; Silverado, Sierra; 6.0l; W/Flex Fuel; Left
    • Location: Driver Side
    • Other Names: Exhaust Manifold
    • Item Dimensions: 6.9 x 22.2 x 11.6 inches
    • Item Weight: 19.40 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 12610962
    • Part Description: 2018 GMC Sierra 3500 HD Exhaust Manifold
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    $443.15 MSRP: $703.61
    You Save: $260.46 (38%)
  • OEM 2018 GMC Sierra 3500 HD Exhaust Manifold Diagram - 12686302
    View Related Parts

    OEM (Genuine) 2018 GMC Sierra 3500 HD Exhaust Manifold

    PartNumber: 12686302
    OEM 2018 GMC Sierra 3500 HD Exhaust Manifold - 12686302
    Product Specifications
    • Notes: 6.0 Liter; Silverado, Sierra; 6.0l; W/Flex Fuel; Right
    • Location: Passenger Side
    • Other Names: Exhaust Manifold
    • Item Dimensions: 25.0 x 9.7 x 8.1 inches
    • Item Weight: 12.80 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 12647717, 12612084, 12677663
    • Part Description: 2018 GMC Sierra 3500 HD 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
    $498.32 MSRP: $791.22
    You Save: $292.90 (38%)
  • OEM 2018 GMC Sierra 3500 HD Exhaust Manifold Diagram - 12679988
    View Related Parts

    OEM (Genuine) 2018 GMC Sierra 3500 HD Exhaust Manifold

    PartNumber: 12679988
    OEM 2018 GMC Sierra 3500 HD Exhaust Manifold - 12679988
    Product Specifications
    • Other Names: Exhaust Manifold
    • Item Dimensions: 17.3 x 4.2 x 4.2 inches
    • Item Weight: 3.70 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 12708010
    • Part Description: 2018 GMC Sierra 3500 HD Exhaust Manifold
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
    $72.17 MSRP: $114.61
    You Save: $42.44 (38%)
  • OEM 2018 GMC Sierra 3500 HD Exhaust Manifold Diagram - 12676607
    View Related Parts

    OEM (Genuine) 2018 GMC Sierra 3500 HD Exhaust Manifold

    PartNumber: 12676607
    OEM 2018 GMC Sierra 3500 HD Exhaust Manifold - 12676607
    Product Specifications
    • Notes: Silverado, Sierra; 6.6l; Right; 6.6 Liter Diesel
    • Location: Passenger Side
    • Other Names: Exhaust Manifold
    • Item Dimensions: 17.4 x 6.7 x 4.8 inches
    • Item Weight: 4.20 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 12708009
    • Part Description: 2018 GMC Sierra 3500 HD Exhaust Manifold
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
    $62.66 MSRP: $103.70
    You Save: $41.04 (40%)