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MBRP GM8428

Downpipe 2015.5-16 GM Duramax 6.6L

MBRP GM8428

679-GM8428

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Estimated ship date 10/23/17 if Ordered Today
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MBRP GM8428 Downpipe 2015.5-16 GM Duramax 6.6L $189.99
Downpipe
  • 2015.5-16 GM Duramax 6.6L
  • 3"
  • Black Finish

  • Specifications:

    Manufacturer's Part Number:
    GM8428

    While the search to increase Duramax LLY/LBZ/LMM power usually leads to exhaust, intake, or tuner, one part that's often overlooked is the stock turbo downpipe. MBRP's downpipes replace this restrictive factory exhaust component with a direct-replacement that mounts between the factory turbo and the rest of the exhaust. These downpipes delivers more flow, fuel economy, and better performance output.

    Features:
  • Mandrel-Bent 16-Gauge Tubing with High-Temp Black Ceramic Coating.
  • 20% Greater Exhaust Flow Over Stock.
  • Lower Exhaust Gas Temperature.
  • Quicker Throttle Response.
  • Greater Heat Retention.
  • Richer Diesel Sound.

  • Does MBRP GM8428 fit your vehicle?

    Narrow Results

    2015-2016 CHEVROLET SILVERADO 3500 HD

    • CC: 6599
    • Fitment_Note: Not Legal For Sale Or Use In California
    • Liter: 6.6
    • SubModel: LTZ
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2015-2016 GMC SIERRA 2500 HD

    • CC: 6599
    • Fitment_Note: Not Legal For Sale Or Use In California
    • Liter: 6.6
    • SubModel: DENALI
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2015-2016 CHEVROLET SILVERADO 3500 HD

    • CC: 6599
    • Fitment_Note: Not Legal For Sale Or Use In California
    • Liter: 6.6
    • SubModel: WT
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2015-2016 GMC SIERRA 3500 HD

    • CC: 6599
    • Fitment_Note: Not Legal For Sale Or Use In California
    • Liter: 6.6
    • SubModel: SLT
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2017 CHEVROLET SILVERADO 3500 HD

    • CC: 6599
    • Liter: 6.6
    • SubModel: HIGH COUNTRY
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2017 CHEVROLET SILVERADO 3500 HD

    • CC: 6599
    • Liter: 6.6
    • SubModel: WT
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2015-2016 CHEVROLET SILVERADO 2500 HD

    • CC: 6599
    • Fitment_Note: Not Legal For Sale Or Use In California
    • Liter: 6.6
    • SubModel: HIGH COUNTRY
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2017 GMC SIERRA 3500 HD

    • CC: 6599
    • Liter: 6.6
    • SubModel: DENALI
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2017 CHEVROLET SILVERADO 2500 HD

    • CC: 6599
    • Liter: 6.6
    • SubModel: LTZ
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2017 GMC SIERRA 3500 HD

    • CC: 6599
    • Liter: 6.6
    • SubModel: SLT
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2015-2016 GMC SIERRA 2500 HD

    • CC: 6599
    • Fitment_Note: Not Legal For Sale Or Use In California
    • Liter: 6.6
    • SubModel: SLT
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2015-2016 CHEVROLET SILVERADO 3500 HD

    • CC: 6599
    • Fitment_Note: Not Legal For Sale Or Use In California
    • Liter: 6.6
    • SubModel: LT
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2017 CHEVROLET SILVERADO 2500 HD

    • CC: 6599
    • Liter: 6.6
    • SubModel: LT
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2015-2016 GMC SIERRA 2500 HD

    • CC: 6599
    • Fitment_Note: Not Legal For Sale Or Use In California
    • Liter: 6.6
    • SubModel: SLE
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2017 CHEVROLET SILVERADO 3500 HD

    • CC: 6599
    • Liter: 6.6
    • SubModel: LT
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2015-2016 GMC SIERRA 2500 HD

    • CC: 6599
    • Fitment_Note: Not Legal For Sale Or Use In California
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2015-2016 GMC SIERRA 3500 HD

    • CC: 6599
    • Fitment_Note: Not Legal For Sale Or Use In California
    • Liter: 6.6
    • SubModel: SLE
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2015-2016 CHEVROLET SILVERADO 2500 HD

    • CC: 6599
    • Fitment_Note: Not Legal For Sale Or Use In California
    • Liter: 6.6
    • SubModel: LT
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2017 CHEVROLET SILVERADO 3500 HD

    • CC: 6599
    • Liter: 6.6
    • SubModel: LTZ
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2015-2016 GMC SIERRA 3500 HD

    • CC: 6599
    • Fitment_Note: Not Legal For Sale Or Use In California
    • Liter: 6.6
    • SubModel: DENALI
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2017 GMC SIERRA 3500 HD

    • CC: 6599
    • Liter: 6.6
    • SubModel: SLE
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2017 GMC SIERRA 2500 HD

    • CC: 6599
    • Liter: 6.6
    • SubModel: SLE
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2017 CHEVROLET SILVERADO 2500 HD

    • CC: 6599
    • Liter: 6.6
    • SubModel: HIGH COUNTRY
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2015-2016 CHEVROLET SILVERADO 2500 HD

    • CC: 6599
    • Fitment_Note: Not Legal For Sale Or Use In California
    • Liter: 6.6
    • SubModel: WT
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2015 GMC SIERRA 3500 HD

    • CC: 6599
    • Fitment_Note: Not Legal For Sale Or Use In California
    • Liter: 6.6
    • SubModel: WT
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2016 GMC SIERRA 3500 HD

    • CC: 6599
    • Fitment_Note: Not Legal For Sale Or Use In California
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2017 GMC SIERRA 2500 HD

    • CC: 6599
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2017 CHEVROLET SILVERADO 2500 HD

    • CC: 6599
    • Liter: 6.6
    • SubModel: WT
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2017 GMC SIERRA 3500 HD

    • CC: 6599
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2017 GMC SIERRA 2500 HD

    • CC: 6599
    • Liter: 6.6
    • SubModel: DENALI
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2015-2016 CHEVROLET SILVERADO 3500 HD

    • CC: 6599
    • Fitment_Note: Not Legal For Sale Or Use In California
    • Liter: 6.6
    • SubModel: HIGH COUNTRY
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2015-2016 CHEVROLET SILVERADO 2500 HD

    • CC: 6599
    • Fitment_Note: Not Legal For Sale Or Use In California
    • Liter: 6.6
    • SubModel: LTZ
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2017 GMC SIERRA 2500 HD

    • CC: 6599
    • Liter: 6.6
    • SubModel: SLT
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )
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