40 Series - 2.50" IN(C)/OUT(O) - Aggressive Sound 1971-mercury-marquis-esi4030523 1 - Steel - Internal

1 - Steel - Internal Balance - Ford FE-Series - Each

Engine Oil Dipstick - Stick Only - Locking - Steel - Passenger Side - GM LS-Series - Each

Radiator Cap - 12-15 lb - Octagon - Be Cool Logo - Aluminum - Polished - Standard Size Radiator Necks - Each

Fitting - Hose End - AQP/Startlite - Straight - 12 AN Hose Crimp to 12 AN Female - Aluminum - Red / Silver - Each

850 in / 0

40 Series - 2.50" IN(C)/OUT(O) - Aggressive Sound 1971-mercury-marquis-esi4030523 1 - Steel - InternalThe 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.