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You are here: Home > by Vehicle > 04.5-05 GM 6.6L Duramax LLY > Exhaust Systems

We found 393 results matching your criteria.

Exhaust Systems for your 2004.5-2005 GM 6.6L Duramax LLY Diesel Truck

Shop Exhaust Systems for your 2004.5-2005 GM 6.6L Duramax LLY at Unbeatable Prices - Fast & Free Shipping - Expert Service on Exhaust Systems - Buy from OC DIESEL Today!

OC DIESEL offers a wide selection of Diesel Exhausts for most diesel truck, motorhome, and RV owners. Experience the benefits of increased horsepower and towing performance with our Diesel Exhausts selection. Whether your diesel is used for recreation, heavy towing, daily driving, drag racing, sled pulling, or mud bogging the addition of Diesel Exhausts can increase horsepower, torque, towing capability, and fuel efficiency. They can reduce back pressure and lower EGT's (exhaust gas temperatures) while delivering a rich exhaust sound. They usually install with common tools and carry a warranty. We also carry several Diesel Exhausts replacement parts, accessories and components.

Use our easy online check out and purchase your Diesel Exhausts now or call us at (714) 848-2170 for more Diesel Exhausts information.

our most popular products...
Cat Back DPF Back Turbo Back

Cat Back Exhaust Systems

DPF Back Exhaust Systems

Turbo Back Exhaust Systems

Downpipe Back Performance Exhaust Tips

Downpipe Back Exhaust Systems

Diesel Performance Exhausts

Category Includes:
Diesel Exhaust Tips
Exhaust Stacks Exhaust Parts
Category Includes:
Stack Systems
Stacks
Stack Parts
Category Includes:
Downpipes
Front pipes
Mufflers
Test Pipes
Adapters
Clamps
Hangers
Elbows
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Silverline 4" Aluminized Single Turbo Back Exhaust - AS CS101A Silverline 4" Aluminized Single Turbo Back Exhaust - No Muffler Model CS101ANM Silverline 4" T304 SS Single Turbo Back Exhaust - AS CS101 Silverline 4" T409 SS Single Turbo Back Exhaust - AS CS101409

01-07 6.6L GM Duramax
All Cabs & Beds
Off-Road Use Only
On Sale - Use Code: SILVER10

01-07 6.6L GM Duramax
All Cabs & Beds
Off-Road Use Only
On Sale - Use Code SILVER10

01-07 6.6L GM Duramax
All Cabs & Beds
Off-Road Use Only

01-07 6.6L GM Duramax
All Cabs & Beds
Off-Road Use Only
Silverline 4" T409 SS Dual Turbo Back Exhaust - AS CS103409 Silverline 4" T304 SS Dual Cat Back Exhaust System - AS CS104 Banks Power 47737 Single Exhaust Big Hoss Bundle 2004.5-2005 GM 6.6L Duramax Banks Power 47731 Single Exhaust Six-Gun Bundle 2004.5-2005 GM 6.6L Duramax

01-07 6.6L GM Duramax
All Cabs & Beds
Off-Road Use Only

01-05 6.6L GM Duramax
All Cabs & Beds

Banks Power for the following Diesel Pickup Truck(s):

    Full Vehicle Application List:
  • 2004.5-2005 Chevrolet 6.6L Duramax Silverado 2500/3500
  • 2004.5-2005 GM 6.6L Duramax Sierra 2500/3500

Banks Power for the following Diesel Pickup Truck(s):

    Full Vehicle Application List:
  • 2004.5-2005 Chevrolet 6.6L Duramax Silverado 2500/3500
  • 2004.5-2005 GM 6.6L Duramax Sierra 2500/3500
Banks Power 47732 Single Exhaust Six-Gun Bundle 2004.5-2005 GM 6.6L Duramax Banks Power 47732 Single Exhaust Six-Gun Bundle 2004.5-2005 GM 6.6L Duramax Banks Power 47737 Single Exhaust Big Hoss Bundle 2004.5-2005 GM 6.6L Duramax Banks Power 47737 Single Exhaust Big Hoss Bundle 2004.5-2005 GM 6.6L Duramax

Banks Power for the following Diesel Pickup Truck(s):

    Full Vehicle Application List:
  • 2004.5-2005 Chevrolet 6.6L Duramax Silverado 2500/3500
  • 2004.5-2005 GM 6.6L Duramax Sierra 2500/3500

Banks Power for the following Diesel Pickup Truck(s):

    Full Vehicle Application List:
  • 2004.5-2005 Chevrolet 6.6L Duramax Silverado 2500/3500
  • 2004.5-2005 GM 6.6L Duramax Sierra 2500/3500

Banks Power for the following Diesel Pickup Truck(s):

    Full Vehicle Application List:
  • 2004.5-2005 Chevrolet 6.6L Duramax Silverado 2500/3500
  • 2004.5-2005 GM 6.6L Duramax Sierra 2500/3500

Banks Power for the following Diesel Pickup Truck(s):

    Full Vehicle Application List:
  • 2004.5-2005 Chevrolet 6.6L Duramax Silverado 2500/3500
  • 2004.5-2005 GM 6.6L Duramax Sierra 2500/3500
Banks Power 48632 Single Monster Exhaust System 2002-2005 GM 6.6L Duramax Banks Power 48633 Single Monster Exhaust System 2002-2005 GM 6.6L Duramax Banks Power 48634 Single Monster Exhaust System 2002-2005 GM 6.6L Duramax Banks Power 48769 Sport Monster Exhaust System 2001-2005 GM 6.6L Duramax

Banks Power for the following Diesel Pickup Truck(s):

    Full Vehicle Application List:
  • 2002-2005 Chevrolet 6.6L Duramax Silverado 2500/3500
  • 2002-2005 GM 6.6L Duramax Sierra 2500/3500

Banks Power for the following Diesel Pickup Truck(s):

    Full Vehicle Application List:
  • 2002-2005 Chevrolet 6.6L Duramax Silverado 2500/3500
  • 2002-2005 GM 6.6L Duramax Sierra 2500/3500

Banks Power for the following Diesel Pickup Truck(s):

    Full Vehicle Application List:
  • 2002-2005 Chevrolet 6.6L Duramax Silverado 2500/3500
  • 2002-2005 GM 6.6L Duramax Sierra 2500/3500

Banks Power for the following Diesel Pickup Truck(s):

    Full Vehicle Application List:
  • 2001-2005 Chevrolet 6.6L Duramax Silverado 2500/3500
  • 2001-2005 GM 6.6L Duramax Sierra 2500/3500
Banks Power 48770 Sport Monster Exhaust System 2001-2005 GM 6.6L Duramax Banks Power 48771 Sport Monster Exhaust System 2001-2005 GM 6.6L Duramax Banks Power 48982 Single Exhaust Stinger System 2004.5-2005 GM 6.6L Duramax Banks Power 48982 Single Exhaust Stinger System 2004.5-2005 GM 6.6L Duramax

Banks Power for the following Diesel Pickup Truck(s):

    Full Vehicle Application List:
  • 2001-2005 Chevrolet 6.6L Duramax Silverado 2500/3500
  • 2001-2005 GM 6.6L Duramax Sierra 2500/3500

Banks Power for the following Diesel Pickup Truck(s):

    Full Vehicle Application List:
  • 2001-2005 Chevrolet 6.6L Duramax Silverado 2500/3500
  • 2001-2005 GM 6.6L Duramax Sierra 2500/3500

Banks Power for the following Diesel Pickup Truck(s):

    Full Vehicle Application List:
  • 2004.5-2005 Chevrolet 6.6L Duramax Silverado 2500/3500
  • 2004.5-2005 GM 6.6L Duramax Sierra 2500/3500

Banks Power for the following Diesel Pickup Truck(s):

    Full Vehicle Application List:
  • 2004.5-2005 Chevrolet 6.6L Duramax Silverado 2500/3500
  • 2004.5-2005 GM 6.6L Duramax Sierra 2500/3500
Banks Power 48982 Single Exhaust Stinger System 2004.5-2005 GM 6.6L Duramax Banks Power 48989 Single Exhaust PowerPack System 2004.5-2005 GM 6.6L Duramax Banks Power 48989 Single Exhaust PowerPack System 2004.5-2005 GM 6.6L Duramax Banks Power 48991 Single Exhaust PowerPack System 2004.5-2005 GM 6.6L Duramax

Banks Power for the following Diesel Pickup Truck(s):

    Full Vehicle Application List:
  • 2004.5-2005 Chevrolet 6.6L Duramax Silverado 2500/3500
  • 2004.5-2005 GM 6.6L Duramax Sierra 2500/3500

Banks Power for the following Diesel Pickup Truck(s):

    Full Vehicle Application List:
  • 2004.5-2005 Chevrolet 6.6L Duramax Silverado 2500/3500
  • 2004.5-2005 GM 6.6L Duramax Sierra 2500/3500

Banks Power for the following Diesel Pickup Truck(s):

    Full Vehicle Application List:
  • 2004.5-2005 Chevrolet 6.6L Duramax Silverado 2500/3500
  • 2004.5-2005 GM 6.6L Duramax Sierra 2500/3500

Banks Power for the following Diesel Pickup Truck(s):

    Full Vehicle Application List:
  • 2004.5-2005 Chevrolet 6.6L Duramax Silverado 2500/3500
  • 2004.5-2005 GM 6.6L Duramax Sierra 2500/3500
aFe Power 49-14001 Large Bore-HD 4" 409 Stainless Steel Cat-Back Exhaust System for 2001-2005 GM 6.6L Duramax LB7, LLY aFe Power 49-14003 Large Bore-HD 4" 409 Stainless Steel Down-Pipe Back Exhaust System for 2001-2007 GM 6.6L Duramax LB7, LLY, LBZ aFe Power 49-44001 Large Bore-HD 4" 409 Stainless Steel Cat-Back Exhaust System for 2001-2005 GM 6.6L Duramax LB7, LLY aFe Power 49-90002 MACH Force-Xp 5" Exhaust Tip 304 Stainless Steel for 4" Exhaust Systems
Key Features:
  • Cat-Back
  • Single Side Exit
  • Does Not Include Tip
  • Muffler Included
  • 409 Stainless Steel

2001-2005 GM 6.6L Duramax LB7, LLY
Key Features:
  • Down-Pipe Back
  • Single Side Exit
  • Does Not Include Tip
  • Muffler Included
  • 409 Stainless Steel

2001-2007 GM 6.6L Duramax LB7, LLY, LBZ
Key Features:
  • Cat-Back
  • Single Side Exit
  • Includes Exhaust Tip
  • Muffler Included
  • 409 Stainless Steel

2001-2005 GM 6.6L Duramax LB7, LLY
Key Features:
  • 4" inlet, 5" Outlet, 12" length
  • Bolt or Weld On
  • Polished Finish

4" Exhaust Systems
aFe Power 49-91002 MACH Force-Xp 4" Muffler 409 Stainless Steel for 4" Exhaust Systems aFe Power 49-91004 ATLAS 4" Muffler Delete Pipe 409 Stainless Steel for 4" Exhaust Systems aFe Power 49-91012 MACH Force-Xp 4" Muffler 409 Stainless Steel for 5" Exhaust Systems Diamond Eye K5117A-RP 5" Turbo Back Single Side Aluminized Exhaust System for 2001-2007 GM 6.6L Duramax LB7, LLY, LBZ
Key Features:
  • 4" Inlet and Outlet
  • 30" Overall Length
  • 8" Body Diameter

4" Exhaust Systems
Key Features:
  • 4" Inlet and Outlet
  • 30" Overall Length
  • Fits Most 4" Exhaust Systems

4" Exhaust Systems
Key Features:
  • 5" Inlet and Outlet
  • 30" Overall Length
  • 8" Body Diameter

5" Exhaust Systems
Key Features:
  • Turbo Back
  • Single Side Exit
  • Does Not Include Tip
  • Muffler Replacment Pipe Included
  • Aluminized Steel
  • Includes Quiet Tone Downpipe and Off Road Pipe

2001-2007 GM 6.6L Duramax LB7, LLY, LBZ
MBRP B1410 4" Angle Cut Mirror Polished Stainless T304 Stack MBRP B1430 4" Turn Out Mirror Polished Stainless T304 Stack MBRP B1430BLK 4" Turn Out Black Coated Aluminized Stack MBRP B1440 4" Angle Cut Mirror Polished Stainless T304 Stack
Key Features:
  • Includes (1) Single Piece
  • 4" Inlet to 4" Outlet
  • 36" Tall
Key Features:
  • Includes (1) Single Piece
  • 4" Inlet to 4" Outlet
  • 36" Tall
Key Features:
  • Includes (1) Single Piece
  • 4" Inlet to 4" Outlet
  • 36" Tall
Key Features:
  • Includes (1) Single Piece
  • 4" Inlet to 4" Outlet
  • 48" Tall
MBRP B1510 5" Straight Cut Mirror Polished Stainless T304 Stack MBRP B1530 5" Angle Cut  Mirror Polished Stainless T304 Stack MBRP B1530BLK 5" Angle Cut Black Coated Aluminized Stack MBRP B1540 5" Angle Cut Mirror Polished Stainless T304 Stack
Key Features:
  • Includes (1) Single Piece
  • 4" Inlet to 5" Outlet
  • 36" Tall
Key Features:
  • Includes (1) Single Piece
  • 4" Inlet to 5" Outlet
  • 36" Tall
Key Features:
  • Includes (1) Single Piece
  • 4" Inlet to 5" Outlet
  • 36" Tall
Key Features:
  • Includes (1) Single Piece
  • 4" Inlet to 5" Outlet
  • 48" Tall
MBRP B1540BLK 5" Angle Cut Black Coated Aluminized Stack MBRP B1550 5" Aussie Style Mirror Polish Stainless T304 Stack MBRP B1550BLK 5" Aussie Style Black Coated Aluminized Stack MBRP B1555 5" Aussie Style Mirror Polish Stainless T304 Stack
Key Features:
  • Includes (1) Single Piece
  • 4" Inlet to 5" Outlet
  • 48" Tall
Key Features:
  • Includes (1) Single Piece
  • 4" Inlet to 5" Outlet
  • 36" Tall
Key Features:
  • Includes (1) Single Piece
  • 4" Inlet to 5" Outlet
  • 36" Tall
Key Features:
  • Includes (1) Single Piece
  • 5" Inlet to 5" Outlet
  • 36" Tall
MBRP B1555BLK 5" Aussie Style Black Coated Aluminized Stack MBRP B1610 6" Angle Cut Mirror Polished Stainless T304 Stack MBRP B1610BLK 6" Angle Cut Black Coated Aluminized Stack MBRP B1660 6" Angle Cut Mirror Polished Stainless T304 Stack
Key Features:
  • Includes (1) Single Piece
  • 5" Inlet to 5" Outlet
  • 36" Tall
Key Features:
  • Includes (1) Single Piece
  • 4" Inlet to 6" Outlet
  • 36" Tall
Key Features:
  • Includes (1) Single Piece
  • 4" Inlet to 6" Outlet
  • 36" Tall
Key Features:
  • Includes (1) Single Piece
  • 5" Inlet to 6" Outlet
  • 36" Tall
MBRP B1660BLK 6" Angle Cut Black Coated Aluminized Stack MBRP B1710 7" Angle Cut Mirror Polished Stainless T304 Stack MBRP B1710BLK 7" Angle Cut Black Coated Aluminized Stack MBRP B1810 8" Angle Cut Mirror Polished Stainless T304 Stack
Key Features:
  • Includes (1) Single Piece
  • 5" Inlet to 6" Outlet
  • 36" Tall
Key Features:
  • Includes (1) Single Piece
  • 5" Inlet to 7" Outlet
  • 36" Tall
Key Features:
  • Includes (1) Single Piece
  • 5" Inlet to 7" Outlet
  • 36" Tall
Key Features:
  • Includes (1) Single Piece
  • 5" Inlet to 8" Outlet
  • 36" Tall
MBRP B1810BLK 8" Angle Cut Black Coated Aluminized Stack MBRP BB0004 Checker Plate Cover for 2001-2007 GM 6.6L Duramax LB7, LLY, LBZ MBRP GM8424 3" Black Coated Aluminized Down Pipe for 2004.5-2009 GM Duramax LLY, LBZ, LMM MBRP GMAL401 4" Aluminized Front-Pipe with Flange for 2001-2005 GM 6.6L Duramax LB7, LLY
Key Features:
  • Includes (1) Single Piece
  • 5" Inlet to 8" Outlet
  • 36" Tall
Key Features:
  • Conceals T-Pipe in Bed

2001-2007 GM 6.6L Duramax LB7, LLY, LBZ
Key Features:
  • Performance Improvement

2004.5-2009 GM Duramax LLY, LBZ, LMM
Key Features:
  • Performance Improvement

2001-2005 GM 6.6L Duramax LB7, LLY
MBRP GMS9401 4" Stainless T409 Front-Pipe w/Flange for 2001-2005 GM 6.6L Duramax LB7, LLY MBRP KT1004 Stainless Steel Mounting Kit for 2001-2007 GM 6.6L Duramax LB7, LLY, LBZ MBRP KT1008 Stainless Steel Mounting Kit for 2001-2007 GM 6.6L Duramax LB7, LLY, LBZ MBRP M1004 4" Stainless T304 Quiet Tone Muffler
Key Features:
  • Performance Improvement

2001-2005 GM 6.6L Duramax LB7, LLY
Key Features:
  • Mouning Kit for Two Smokers Stacks
  • Includes All Necessary Hardware

2001-2007 GM 6.6L Duramax LB7, LLY, LBZ
Key Features:
  • Mouning Kit for One Smokers Stack
  • Includes All Necessary Hardware

2001-2007 GM 6.6L Duramax LB7, LLY, LBZ
Key Features:
  • 4" Inlet/Outlet
  • 30" Overall Length
  • 24" Muffler Body/ 6" Body Diameter
MBRP M1004A 4" Aluminized Quiet Tone Muffler MBRP M1004S 4" Stainless T409 Quiet Tone Muffler MBRP M1031 4" Stainless T304 Muffler MBRP M2029 4" Aluminized Muffler
Key Features:
  • 4" Inlet/Outlet
  • 30" Overall Length
  • 24" Muffler Body/ 6" Body Diameter
Key Features:
  • 4" Inlet/Outlet
  • 30" Overall Length
  • 24" Muffler Body/ 6" Body Diameter
Key Features:
  • 4" Inlet/Outlet
  • 30" Overall Length
  • 24" Muffler Body/ 6" Body Diameter
Key Features:
  • 4" Inlet/Outlet
  • 30" Overall Length
  • 24" Muffler Body/ 6" Body Diameter
MBRP M2029BLK 4" Black Coated Aluminized Muffler MBRP M2050 5" Aluminized Muffler MBRP M2050BLK 5" Black Coated Aluminized Muffler MBRP M91031 4" Stainless T409 Muffler
Key Features:
  • 4" Inlet/Outlet
  • 30" Overall Length
  • 24" Muffler Body/ 6" Body Diameter
Key Features:
  • 5" Inlet/Outlet
  • 31" Overall Length
  • 24" Muffler Body/ 6" Body Diameter
Key Features:
  • 5" Inlet/Outlet
  • 31" Overall Length
  • 24" Muffler Body/ 6" Body Diameter
Key Features:
  • 4" Inlet/Outlet
  • 30" Overall Length
  • 24" Muffler Body/ 6" Body Diameter
MBRP MDA30 4" Aluminized Muffler Delete Pipe MBRP MDA531 5" Aluminized Muffler Delete Pipe MBRP MDDAL27 4" Aluminized Dual Muffler Delete Pipe MBRP MDDS927 4" Stainless T409 Dual Muffler Delete Pipe
Key Features:
  • 4" Inlet/Outlet
  • 30" Overall Length
Key Features:
  • 5" Inlet/Outlet
  • 31" Overall Length
Key Features:
  • 4" Inlet/Outlet
  • 27.5" Overall Length
Key Features:
  • 4" Inlet/Outlet
  • 27.5" Overall Length
MBRP MDS30 4" Stainless T304 Dual Muffler Delete Pipe MBRP MDS36 4" Stainless T304 Dual Muffler Delete Pipe MBRP MDS930 4" Stainless T409 Muffler Delete Pipe MBRP MDS9531 5" Stainless T409 Muffler Delete Pipe
Key Features:
  • 4" Inlet/Outlet
  • 30" Overall Length
Key Features:
  • 4" Inlet/Outlet
  • 36" Overall Length
Key Features:
  • 4" Inlet/Outlet
  • 30" Overall Length
Key Features:
  • 5" Inlet/Outlet
  • 31" Overall Length
MBRP R1009 4" Stainless T304 Resonator MBRP R2009 4" Aluminized Resonator MBRP S6000304 4" Cat Back Single Side Stainless T304 Exhaust for 2001-2005 GM 6.6L Duramax LB7, LLY MBRP S6000409 4" Cat Back Single Side Stainless T409 Exhaust for 2001-2005 GM 6.6L Duramax LB7, LLY
Key Features:
  • 4" Inlet/Outlet
  • 18" Overall Length
  • 12" Muffler Body/ 6" Body Diameter
Key Features:
  • 4" Inlet/Outlet
  • 18" Overall Length
  • 12" Muffler Body/ 6" Body Diameter
Key Features:
  • Cat Back
  • Single Side Exit
  • Double Wall Tip
  • Muffler Included
  • PRO Series T304 Stainless

2001-2005 GM 6.6L Duramax LB7, LLY
Key Features:
  • Cat Back
  • Single Side Exit
  • Double Wall Tip
  • Muffler Included
  • XP Series T409 Stainless

2001-2005 GM 6.6L Duramax LB7, LLY
   
 
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