BDD Exhaust Manifold Chevy LB7/LLY/LBZ/LMM Duramax 2001-2010 1041460 Thermostats This huge 5 inch opening

This huge 5 inch opening requires a huge filter

75 Inch Coolant Drain Tube

which reduces cyclic thermal fatigue and greatly increases manifold longevity

a PPE Down Pipe and/or PPE OEM Up-Pipes

Proprietary bolt pattern on outlets for ease of bolt installatio

BDD Exhaust Manifold Chevy LB7/LLY/LBZ/LMM Duramax 2001-2010 1041460 Thermostats This huge 5 inch openingThe BD Full Bore Exhaust Manifold for the Chevy Duramax engine replaces factory driver's side "pinched down" unit, restoring exhaust flow and balances the V8 engine for smother running. 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. FEATURES Direct, bolt in replacement Tapped to accept the most popular EGT probes High