01-04 Duramax LB7 Fleece Modified Turbo Horn Compound Typical aftermarket exhaust manifold bolts

Typical aftermarket exhaust manifold bolts are much shorter than stock which after numerous heat cycles can cause them to fatigue and start to stretch

Single Shot custom tuning required

Unlimited Hauling Flexibility

2 Year Powertrain Warranty

01-04 Duramax LB7 Fleece Modified Turbo Horn Compound Typical aftermarket exhaust manifold boltsIncrease your LB7s potential with this simple, but effective upgrade. Back to back dyno pulls showed an increase of 15hp with this Fleece Performance Modified LB7 Intake Horn thats about the cheapest 15hp from a bolt on youll find anywhere! Painted black with a Fleece logo, includes a new Mahle gasket, B32478.