MBRP Downpipe 2001-04 GM 6.6L Duramax LB7
679-GM8425



Specifications:
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:Does MBRP GM8425 fit your vehicle?
2001 GMC SIERRA 3500
- Liter: 6.6
- SubModel: SL
- Aspiration: TURBOCHARGED
- Fitment Notes: 3 in.; Black Coated; Not For Use w/3 Bolt Flange Style Connection
- CUI: 403
- Engine Type: V8 ( 6.6L / 403 )
- Engine Vin: 1
2004 GMC SIERRA 2500 HD
- Liter: 6.6
- SubModel: SLT
- Aspiration: TURBOCHARGED
- Fitment Notes: 3 in.; Black Coated; Not For Use w/3 Bolt Flange Style Connection;Not To Be Sold In California; Fits Early 2004 Models~Made On Or Before 6/30/2004
- CUI: 403
- Engine Type: V8 ( 6.6L / 403 )
- Engine Vin: 1
2003 GMC SIERRA 3500
- Liter: 6.6
- SubModel: SLE
- Aspiration: TURBOCHARGED
- Fitment Notes: 3 in.; Black Coated; Not For Use w/3 Bolt Flange Style Connection;Not To Be Sold In California; Fits Early 2004 Models
- CUI: 403
- Engine Type: V8 ( 6.6L / 403 )
- Engine Vin: 1
2003 CHEVROLET SILVERADO 2500 HD
- Liter: 6.6
- SubModel: LS
- Aspiration: TURBOCHARGED
- Fitment Notes: 3 in.; Black Coated; Not For Use w/3 Bolt Flange Style Connection;Not To Be Sold In California; Fits Early 2004 Models
- CUI: 403
- Engine Type: V8 ( 6.6L / 403 )
- Engine Vin: 1
2004 GMC SIERRA 3500
- Liter: 6.6
- SubModel: BASE
- Aspiration: TURBOCHARGED
- Fitment Notes: 3 in.; Black Coated; Not For Use w/3 Bolt Flange Style Connection;Not To Be Sold In California; Fits Early 2004 Models~Made On Or Before 6/30/2004
- CUI: 403
- Engine Type: V8 ( 6.6L / 403 )
- Engine Vin: 1
2003 GMC SIERRA 2500 HD
- Liter: 6.6
- SubModel: WT
- Aspiration: TURBOCHARGED
- Fitment Notes: 3 in.; Black Coated; Not For Use w/3 Bolt Flange Style Connection;Not To Be Sold In California; Fits Early 2004 Models
- CUI: 403
- Engine Type: V8 ( 6.6L / 403 )
- Engine Vin: 1
2004 CHEVROLET SILVERADO 2500 HD
- Liter: 6.6
- SubModel: WT
- Aspiration: TURBOCHARGED
- Fitment Notes: 3 in.; Black Coated; Not For Use w/3 Bolt Flange Style Connection;Not To Be Sold In California; Fits Early 2004 Models~Made On Or Before 6/30/2004
- CUI: 403
- Engine Type: V8 ( 6.6L / 403 )
- Engine Vin: 1
2004 CHEVROLET SILVERADO 2500 HD
- Liter: 6.6
- SubModel: BASE
- Aspiration: TURBOCHARGED
- Fitment Notes: 3 in.; Black Coated; Not For Use w/3 Bolt Flange Style Connection;Not To Be Sold In California; Fits Early 2004 Models~Made On Or Before 6/30/2004
- CUI: 403
- Engine Type: V8 ( 6.6L / 403 )
- Engine Vin: 1
2004 CHEVROLET SILVERADO 3500
- Liter: 6.6
- SubModel: LS
- Aspiration: TURBOCHARGED
- Fitment Notes: 3 in.; Black Coated; Not For Use w/3 Bolt Flange Style Connection; Made On Or Before 6/30/2004
- CUI: 403
- Engine Type: V8 ( 6.6L / 403 )
- Engine Vin: 2
2001 CHEVROLET SILVERADO 2500 HD
- Liter: 6.6
- SubModel: LS
- Aspiration: TURBOCHARGED
- Fitment Notes: 3 in.; Black Coated; Not For Use w/3 Bolt Flange Style Connection;Not To Be Sold In California; Fits Early 2004 Models
- CUI: 403
- Engine Type: V8 ( 6.6L / 403 )
- Engine Vin: 1
2001 GMC SIERRA 3500
- Liter: 6.6
- SubModel: SLT
- Aspiration: TURBOCHARGED
- Fitment Notes: 3 in.; Black Coated; Not For Use w/3 Bolt Flange Style Connection
- CUI: 403
- Engine Type: V8 ( 6.6L / 403 )
- Engine Vin: 1
2003 GMC SIERRA 2500 HD
- Liter: 6.6
- SubModel: SLT
- Aspiration: TURBOCHARGED
- Fitment Notes: 3 in.; Black Coated; Not For Use w/3 Bolt Flange Style Connection
- CUI: 403
- Engine Type: V8 ( 6.6L / 403 )
- Engine Vin: 1
Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools:
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.