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SKU: 
12637647

ACDelco Left Hand Max Flow Exhaust Manifold, Duramax | 2001 - 2016

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Product Information

High Flow left hand manifold that eliminates the pinch point near the steering shaft. Bolt in factory replacement

GM has introduced a new manifold that will flow better then the original OEM unit.  Reduced pinch area near steering shaft for a nearly ideal flow.  Greatly increased flow characteristics over the original unit. 

A great alternative to higher priced after market manifolds. 

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