BD Diesel Full Bore Exhaust Manifold Restores Exhaust Flow Balance 4122BU Air Lift Air Spring Kits

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BD Diesel Full Bore Exhaust Manifold Restores Exhaust Flow Balance 4122BU Air Lift Air Spring KitsThe BD Full Bore Exhaust Manifold for the Chevy Duramax engine replaces factory driver's side "pinched down" unit, restoring exhaust flow and balances the V8 engine for smother running. Flow design will accommodate enhanced performance engines by aiding them in improving exhaust velocity to drive the turbocharger, improving power, increasing economy and lowering EGT's. Made from high silicon ductile iron, the Full Bore is a direct, bolt in replacement