The AFE 49-44001 Large Bore HD 4” Cat Back Exhaust System for the 2001- 2005 GM 6.6L Duramax is engineered to perform in the most extreme environments. This system is constructed from mandrel bent 4″ stainless steel tubing for maximum flow, increased horsepower, increased torque and lower EGT’s. This system is available in 4″ cat-back with muffler. Large Bore-HD exhaust systems are the perfect combination of performance, fit and value.
Features:
Applications: 2001-2005 GM 6.6L Duramax (All Cabs & Beds)
| YEAR | MAKE | ENGINE |
|---|---|---|
| 2001 | Chevy | 6.6L LB7 Duramax |
| 2002 | Chevy | 6.6L LB7 Duramax |
| 2003 | Chevy | 6.6L LB7 Duramax |
| 2004 | Chevy | 6.6L LB7 Duramax |
| 2004.5 | Chevy | 6.6L LLY Duramax |
| 2005 | Chevy | 6.6L LLY Duramax |
| 2001 | GMC | 6.6L LB7 Duramax |
| 2002 | GMC | 6.6L LB7 Duramax |
| 2003 | GMC | 6.6L LB7 Duramax |
| 2004 | GMC | 6.6L LB7 Duramax |
| 2004.5 | GMC | 6.6L LLY Duramax |
| 2005 | GMC | 6.6L LLY Duramax |
Cat-Back Exhaust System
Banks Power 2002-2005 GM HD Duramax 6.6L Single Monster 4″ Cat-Back Exhaust System
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Cat-Back Exhaust System
Banks Power 2002-2005 GM HD Duramax 6.6L Single Monster 4″ Cat-Back Exhaust System
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Cat-Back Exhaust System
MagnaFlow 2001-2005 GM HD Duramax 6.6L Federal Direct-Fit Catalytic Converter
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Cat-Back Exhaust System
MBRP 2001-2005 GM HD Duramax 6.6L 4″ Performance Series Cat-Back Exhaust System
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Cat-Back Exhaust System
MBRP 2001-2005 GM HD Duramax 6.6L 4″ Installer Series Cat-Back Exhaust System
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