Exhaust Manifold- LH OEM, 2001-2012 Duramax, Max Flow, bolt in factory replacement-m
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Exhaust Manifold- LH OEM, 2001-2012 Duramax, Max Flow, bolt in factory replacement-t Exhaust Manifold- LH OEM, 2001-2012 Duramax, Max Flow, bolt in factory replacement-2-t  
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Exhaust Manifold- LH OEM, 2001-2012 Duramax, Max Flow, bolt in factory replacement


Hi Flow left hand manifold.Bolt in factory replacement
Part Number: 12637647  
Hi Flow left hand manifold.Bolt in factory replacement
 
Price:
$99.95
Qty: 
 
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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