40 Series - 2.50 Offset In / 2.50 Center Out - Aggressive Sound 1997-saturn-sw2-esi1668490 Vacuum Advance Lock Out -

Vacuum Advance Lock Out - Aluminum - GM HEI Distributors - Each

188 in Thick - Steel Core Silicone Rubber - Mopar 426 Hemi - Each

Header Bolt - 3/8-16 in Thread - 1 in Long - Hex Head - Chromoly - Black Oxide - Big Block Chevy - Set of 16

81 in OD - C4-R6 Valve - Digressive - Steel - Zinc Plated - Each

480 in - Duration 284 / 284 - 112 LSA - 3000 / 6000 RPM - Small Block Ford - Each

40 Series - 2.50 Offset In / 2.50 Center Out - Aggressive Sound 1997-saturn-sw2-esi1668490 Vacuum Advance Lock Out -The 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.