40 Series - 2.50" IN(C)/OUT(O) - Aggressive Sound CHEVROLET/GMC air and debris from diesel

air and debris from diesel fuel

Constructed of hard coated black stamped steel

Anodized billet aluminum adapter fitting with retaining bolt

this adjustable fuel System is rated at 290 gallons of diesel fuel per hour and offers adjustable fuel pressure from 1-75 PSI to customize fuel delivery for race or competition diesel engines

40 Series - 2.50" IN(C)/OUT(O) - Aggressive Sound CHEVROLET/GMC air and debris from dieselThe Original 40 series muffler delivers an aggressive exterior and interior tone. If you're looking for that original Flowmaster sound this is the muffler is for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.