PPE 116120000 REPLACEMENT UP-PIPES
The PPE 116120000 Replacement Up-Pipes for your 2001-2004 GM 6.6L Duramax increase flow, and reliability. Even a stock Duramax can produce high temperatures and pressures that cause OEM up pipes eventually fail from constant temperature and pressure fluctuation.
GM 12637647 UPDATED DRIVER SIDE EXHAUST MANIFOLD
The GM 12637647 Updated Driver Side Exhaust Manifold for your 2001-2010 GM 6.6L Duramax features a "full bore" unlike the factory exhaust manifold that is "kinked or dented" for additional clearance.