Proflow Exhaust Gaskets, Header, Fibre Laminated, Large Port For Chev, Big Block Bolt kits Fits up on a Holley

Fits up on a Holley 4150 pattern base just the same

RTS has teamed up with ARP to supply customers High Performance Series flexplate bolts far superior to OEM hardware

3/8-16" Header Bolts

Note: For use with 100 & 500 series fittings

Part Number : PFEPM308HD

Proflow Exhaust Gaskets, Header, Fibre Laminated, Large Port For Chev, Big Block Bolt kits Fits up on a HolleyProflow Exhaust Gaskets, Header, Fibre Laminated, Large Port, For Chevrolet, Big Block, Pair Proflow's OEM quality gasket is constructed of a thick (. 060) high temperature, nonasbestos fibre laminate with a perforated steel core, which provides a superior grip and adhesion. This construction also contributes to exact fit compliance between the cylinder head and header flange, offering excellent sealing properties during extreme temperature and