Duramax Drivers Side Exhaust Manifold Install

Exhaust manifold is hidden behind a maze of wiring harnesses and plumbing.

Duramax drivers side exhaust manifold install.

They are difficult to reach and even harder to break loose. 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. Inner fender liner has to be removed to access driver s side of the duramax. High flow driver side exhaust manifold.

Doing the r r is easy except for the rear bolts at the exhaust flange which are hard to reach and remove. Steering shat has to be unbolted to remove exhaust manifold. The increased flow will balance the engine and provide increased spool up throttle response and better overall performance. But the effort is worth it on several fronts.

The most difficult part other than getting to the manifold is removing the three bolts at the exhaust flange.