40 Series - 2.50" IN(D)/OUT(D) - Aggressive Sound 2000-ford-e-250-econoline-esi9495102 447 in - Duration 260

447 in - Duration 260 / 260 - 110 LSA - 1200 / 5200 RPM - Oldsmobile V8 - Each

313 in ID - 1 in Thick - Aluminum - Natural - Universal - Pair

Brake Rotor Spacer - 2

125 in Wall Thickness - 4 ft Long - Aluminum - Natural - Each

Rear Cover Gasket - Rubber / Steel - GM LS-Series - Each

40 Series - 2.50" IN(D)/OUT(D) - Aggressive Sound 2000-ford-e-250-econoline-esi9495102 447 in - Duration 260The 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.