You may not know it, but the factory drivers side exhaust manifold is pinched down to allow for steering shaft clearance, which actually is not required. As a result, thismanifold only flows 80-percent of the passenger side. BDs Full Bore exhaust manifoldrestores exhaust flow balance, improving power and reducing EGT. Made from high silicon ductile iron, the Full Bore is a direct, bolt-in replacement for the factory manifold and is even drilled and tapped to accept the most popular EGT probes.
Installation InstructionsThis Part Fits:
| Year |
Make |
Model |
Submodel |
| 2001-2005 |
Chevrolet |
Silverado 2500 HD |
Base |
| 2001-2006 |
Chevrolet |
Silverado 2500 HD |
LS |
| 2001-2010 |
Chevrolet |
Silverado 2500 HD |
LT |
| 2007-2010 |
Chevrolet |
Silverado 2500 HD |
LTZ |
| 2003-2010 |
Chevrolet |
Silverado 2500 HD |
WT |
| 2007 |
Chevrolet |
Silverado 2500 HD Classic |
LS |
| 2007 |
Chevrolet |
Silverado 2500 HD Classic |
LT |
| 2007 |
Chevrolet |
Silverado 2500 HD Classic |
WT |
| 2001-2005 |
Chevrolet |
Silverado 3500 |
Base |
| 2001-2006 |
Chevrolet |
Silverado 3500 |
LS |
| 2001-2006 |
Chevrolet |
Silverado 3500 |
LT |
| 2004,2006 |
Chevrolet |
Silverado 3500 |
WT |
| 2007 |
Chevrolet |
Silverado 3500 Classic |
LS |
| 2007 |
Chevrolet |
Silverado 3500 Classic |
LT |
| 2007 |
Chevrolet |
Silverado 3500 Classic |
WT |
| 2007-2010 |
Chevrolet |
Silverado 3500 HD |
LT |
| 2007-2010 |
Chevrolet |
Silverado 3500 HD |
LTZ |
| 2007-2010 |
Chevrolet |
Silverado 3500 HD |
WT |
| 2002-2005 |
GMC |
Sierra 2500 HD |
Base |
| 2001-2002,2006 |
GMC |
Sierra 2500 HD |
SL |
| 2001-2010 |
GMC |
Sierra 2500 HD |
SLE |
| 2001-2010 |
GMC |
Sierra 2500 HD |
SLT |
| 2003-2010 |
GMC |
Sierra 2500 HD |
WT |
| 2007 |
GMC |
Sierra 2500 HD Classic |
SL |
| 2007 |
GMC |
Sierra 2500 HD Classic |
SLE |
| 2007 |
GMC |
Sierra 2500 HD Classic |
SLT |
| 2007 |
GMC |
Sierra 2500 HD Classic |
WT |
| 2002-2005 |
GMC |
Sierra 3500 |
Base |
| 2001-2002,2006 |
GMC |
Sierra 3500 |
SL |
| 2001-2006 |
GMC |
Sierra 3500 |
SLE |
| 2001-2006 |
GMC |
Sierra 3500 |
SLT |
| 2004-2006 |
GMC |
Sierra 3500 |
WT |
| 2007 |
GMC |
Sierra 3500 Classic |
SL |
| 2007 |
GMC |
Sierra 3500 Classic |
SLE |
| 2007 |
GMC |
Sierra 3500 Classic |
SLT |
| 2007 |
GMC |
Sierra 3500 Classic |
WT |
| 2007-2010 |
GMC |
Sierra 3500 HD |
SLE |
| 2007-2010 |
GMC |
Sierra 3500 HD |
SLT |
| 2007-2010 |
GMC |
Sierra 3500 HD |
WT |
