3.500" ID x 6" Long Flex Coupling (Interlock Liner) 304 Stainless F-2 Series Superchargers – 7/16″-20 RH threads &

– 7/16″-20 RH threads & 1/2″-20 RH threads

Saves 11lbs over factory glass

Part Number: 3PCCD-023

ProCharger F-3R-121

3.500" ID x 6" Long Flex Coupling (Interlock Liner) 304 Stainless F-2 Series Superchargers – 7/16″-20 RH threads &The Ace Race Parts brand of 100% 304 Stainless Steel Interlock Liner style Flex Couplings are great for reducing vibration and stress in your exhaust system. Our Flex Couplings feature a 304 Stainless braided exterior, a 304 Stainless interlock style internal liner, a flexible 304 Stainless bellow in the center, and 304 Stainless end caps. The interlock style internal liner helps provide a smooth flow for the high temperature exhaust gases passing