High Flow Duramax Driver Side Manifold - 01-15 GM 6.6L 12637-647PDI
High Flow Duramax Driver Side Manifold - 01-15 GM 6.6L 12637-647PDI
High Flow Duramax Driver Side Manifold - 01-15 GM 6.6L 12637-647PDI

Performance Diesel Parts

High Flow Duramax Driver Side Manifold - 01-15 GM 6.6L 12637-647PDI

0 review Write a Review
MPN: 12637-647PDI
$106.81

Short Description

Hurry up! Current stock:
Product Details  
High Flow (Driver Side) Manifold for 2001 - 2015 Chevy GMC 6.6L Duramax
Part # 12637-647PDI. GM #: 12624684, 12637647, 97224587

The stock manifold was formed with a pinch/crease to allow for steering column clearance that was never needed. This pinched section has 3 of your 4 cylinders on the driver side running at 80% flow and causes an exhaust pressure imbalance and higher EGT's.

New high flow manifold flows better than the original drivers side manifold. Less restriction to match passager side manifold flow. Greatly increased flow characteristics over the original unit. A great alternative to higher priced after market manifolds.

At this time this kit does not come with a manifold gasket. Currently the highest quality gasket is being made by GM. See the chart below for OEM part numbers.
GM OEM Part # Description
98002804
Manifold Gasket
97188685
Manifold to Feed Pipe Gasket

WARNING : This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov

Fitment