2001-2010 Duramax BD Diesel Exhaust Manifold Full Bore Drivers Side (1041460) 1989 Dodge Engine Components The reality is that bellows

The reality is that bellows in the OEM up-pipes don't flex enough which causes stress

Modification Required:

Duramax/Cummins PPE Race Fuel Valve (113073000)

Sold as a complete balanced Set

while the four-axis CNC-machined flange transitions airflow seamlessly into the intake plenum

2001-2010 Duramax BD Diesel Exhaust Manifold Full Bore Drivers Side (1041460) 1989 Dodge Engine Components The reality is that bellows2001 2010 GMC Chevy Duramax LB7 LLY LBZ LMM BDs Full Bore exhaust manifold restores exhaust flow balance, improves power and reduces EGTs inside the combustion chamber. All of which is accomplished by maintaining internal bore size thus maintaining turbo drive pressure.