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View All MBRP Diesel Exhaust Downpipes For GM Duramax
MBRP

MBRP Downpipe 2001-04 GM 6.6L Duramax LB7

MBRP GM8425

679-GM8425

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MBRP Downpipe 2001-04 GM 6.6L Duramax LB7 $179.99
Downpipe
  • 2001-04 GM 6.6L Duramax LB7
  • 3"
  • Black Finish

    • Specifications:

    Manufacturer's Part Number:
    GM8425

    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 GM8425 fit your vehicle?

    Narrow Results
    Filter By
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    Filter By
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    Aspiration

    2001-2003 CHEVROLET SILVERADO 2500 HD

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

    2001-2002 GMC SIERRA 3500

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

    2004 GMC SIERRA 2500 HD

    • CC: 6599
    • Fitment_Note: Made On or Before 6/30/04
    • Liter: 6.6
    • Aspiration: T
    • SubModel: BASE
    • Engine Vin: 1
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2002-2003 GMC SIERRA 2500 HD

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

    2004 GMC SIERRA 2500 HD

    • CC: 6599
    • Fitment_Note: Made On or Before 6/30/04
    • Liter: 6.6
    • Aspiration: T
    • SubModel: WT
    • Engine Vin: 1
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2001-2003 GMC SIERRA 3500

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

    2001-2003 GMC SIERRA 2500 HD

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

    2004 CHEVROLET SILVERADO 2500 HD

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

    2001-2003 CHEVROLET SILVERADO 3500

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

    2004 GMC SIERRA 3500

    • CC: 6599
    • Fitment_Note: Made On or Before 6/30/04
    • Liter: 6.6
    • Aspiration: T
    • SubModel: SLT
    • Engine Vin: 1
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2001-2003 GMC SIERRA 2500 HD

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

    2002-2003 GMC SIERRA 3500

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

    2004 CHEVROLET SILVERADO 2500 HD

    • CC: 6599
    • Liter: 6.6
    • Aspiration: T
    • SubModel: BASE
    • Engine Vin: 1
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2004 GMC SIERRA 3500

    • CC: 6599
    • Fitment_Note: Made On or Before 6/30/04
    • Liter: 6.6
    • Aspiration: T
    • SubModel: WT
    • Engine Vin: 1
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2004 GMC SIERRA 2500 HD

    • CC: 6599
    • Fitment_Note: Made On or Before 6/30/04
    • Liter: 6.6
    • Aspiration: T
    • SubModel: SLE
    • Engine Vin: 1
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2004 CHEVROLET SILVERADO 3500

    • CC: 6599
    • Fitment_Note: Made On or Before 6/30/04
    • Liter: 6.6
    • SubModel: WT
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2004 CHEVROLET SILVERADO 3500

    • CC: 6599
    • Fitment_Note: Made On or Before 6/30/04
    • Liter: 6.6
    • SubModel: LS
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2001-2003 CHEVROLET SILVERADO 2500 HD

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

    2004 CHEVROLET SILVERADO 3500

    • CC: 6599
    • Fitment_Note: Made On or Before 6/30/04
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2004 CHEVROLET SILVERADO 3500

    • CC: 6599
    • Fitment_Note: Made On or Before 6/30/04
    • Liter: 6.6
    • SubModel: LT
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2001-2003 CHEVROLET SILVERADO 3500

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

    2003 GMC SIERRA 2500 HD

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

    2001-2003 GMC SIERRA 3500

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

    2001-2002 GMC SIERRA 2500 HD

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

    2001-2003 CHEVROLET SILVERADO 3500

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

    2004 CHEVROLET SILVERADO 2500 HD

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

    2001-2003 CHEVROLET SILVERADO 2500 HD

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

    2004 GMC SIERRA 3500

    • CC: 6599
    • Fitment_Note: Made On or Before 6/30/04
    • Liter: 6.6
    • Aspiration: T
    • SubModel: SLE
    • Engine Vin: 1
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2004 CHEVROLET SILVERADO 2500 HD

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

    2004 GMC SIERRA 2500 HD

    • CC: 6599
    • Fitment_Note: Made On or Before 6/30/04
    • Liter: 6.6
    • Aspiration: T
    • SubModel: SLT
    • Engine Vin: 1
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    2004 GMC SIERRA 3500

    • CC: 6599
    • Fitment_Note: Made On or Before 6/30/04
    • Liter: 6.6
    • Aspiration: T
    • SubModel: BASE
    • Engine Vin: 1
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )
    Items You Need
    Some parts are not legal for use in California or other states with similar laws / regulations