MBRP Diesel Exhaust Downpipes For Dodge Cummins are formed from mandrel-bent aluminized or stainless steel tubing and removes the factory restrictions so the turbo can spin freely and move more air. Power, torque and throttle response improve while exhaust temperature drops. OE-quality flanges and factory mounting locations provide a superior fit.

Features:

Aluminized Steel or T409 Stainless Steel.

4" Tubing.

Increases Horsepower and Torque.

Direct Fit for Quick Installation.

Welded Bungs Accept Electronic Leads.

Lowers EGT's.

Keeps Truck Legal by Maintaining DPF.

Does MBRP GMS9401 fit your vehicle?

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Year

2001 2002 2003 2004 2005

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Make

CHEVROLET GMC

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Model

SIERRA 2500 HD SIERRA 3500 SILVERADO 2500 HD SILVERADO 3500

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SubModel

BASE LS LT SL SLE SLT WT

2004 CHEVROLET SILVERADO 3500

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

2001-2005 GMC SIERRA 2500 HD

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

2003-2005 GMC SIERRA 2500 HD

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

2004 CHEVROLET SILVERADO 3500

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

2001-2005 GMC SIERRA 2500 HD

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

2002-2005 GMC SIERRA 3500

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

2001-2005 GMC SIERRA 3500

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

2001-2005 CHEVROLET SILVERADO 3500

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

2002-2005 GMC SIERRA 2500 HD

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

2004-2005 GMC SIERRA 3500

CC: 6599
Liter: 6.6
SubModel: WT
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 )

2001-2003 CHEVROLET SILVERADO 3500

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

2001-2005 CHEVROLET SILVERADO 2500 HD

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

2001-2005 CHEVROLET SILVERADO 3500

CC: 6599
Liter: 6.6
SubModel: LT
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 )

2001-2005 CHEVROLET SILVERADO 2500 HD

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

2001-2005 GMC SIERRA 3500

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

2005 CHEVROLET SILVERADO 3500

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

2004-2005 CHEVROLET SILVERADO 2500 HD

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

2001-2005 CHEVROLET SILVERADO 2500 HD

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

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Some parts are not legal for use in California or other states with similar laws / regulations

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MBRP Downpipe Kit With Flange 2001-2005 GM Duramax 2500/3500

Part Number: 679-GMS9401

Specifications:

Does MBRP GMS9401 fit your vehicle?

2004 CHEVROLET SILVERADO 3500

2001-2005 GMC SIERRA 2500 HD

2003-2005 GMC SIERRA 2500 HD

2004 CHEVROLET SILVERADO 3500

2001-2005 GMC SIERRA 2500 HD

2002-2005 GMC SIERRA 3500

2001-2005 GMC SIERRA 3500

2001-2005 CHEVROLET SILVERADO 3500

2002-2005 GMC SIERRA 2500 HD

2004-2005 GMC SIERRA 3500

2001-2002 GMC SIERRA 3500

2001-2003 CHEVROLET SILVERADO 3500

2001-2005 CHEVROLET SILVERADO 2500 HD

2001-2005 CHEVROLET SILVERADO 3500

2001-2002 GMC SIERRA 2500 HD

2001-2005 CHEVROLET SILVERADO 2500 HD

2001-2005 GMC SIERRA 3500

2005 CHEVROLET SILVERADO 3500

2004-2005 CHEVROLET SILVERADO 2500 HD

2001-2005 CHEVROLET SILVERADO 2500 HD

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MBRP Downpipe Kit With Flange 2001-2005 GM Duramax 2500/3500

Part Number: 679-GMS9401

Specifications:

Does MBRP GMS9401 fit your vehicle?

2004 CHEVROLET SILVERADO 3500

2001-2005 GMC SIERRA 2500 HD

2003-2005 GMC SIERRA 2500 HD

2004 CHEVROLET SILVERADO 3500

2001-2005 GMC SIERRA 2500 HD

2002-2005 GMC SIERRA 3500

2001-2005 GMC SIERRA 3500

2001-2005 CHEVROLET SILVERADO 3500

2002-2005 GMC SIERRA 2500 HD

2004-2005 GMC SIERRA 3500

2001-2002 GMC SIERRA 3500

2001-2003 CHEVROLET SILVERADO 3500

2001-2005 CHEVROLET SILVERADO 2500 HD

2001-2005 CHEVROLET SILVERADO 3500

2001-2002 GMC SIERRA 2500 HD

2001-2005 CHEVROLET SILVERADO 2500 HD

2001-2005 GMC SIERRA 3500

2005 CHEVROLET SILVERADO 3500

2004-2005 CHEVROLET SILVERADO 2500 HD

2001-2005 CHEVROLET SILVERADO 2500 HD

Quick Links

Customer Care

Help

JEGS Online

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