Holley Renew Kit 13-RS1-B-M With a patented orifice metering

With a patented orifice metering valve and a lightweight check valve disc these High Energy hydraulic flat lifters for Chevrolet Small/Big Block/348-409 provides quicker response and better performance

comes with an A1000 pump

Thread: 3/8" NPT

Water Pump Plumbing Kit

1/2 in Studs

Holley Renew Kit 13-RS1-B-M With a patented orifice meteringKit is for list numbers R9393, R9394, R9399, R9399 1, R50405, R50405 1, R50418, R50462, R50462 1, R50468, R50468 1, R80262, R80264, R80364 Detailed instructions included Product Description: Carburetor Rebuild Kit Renew Holley Marine Carburetors Gas Kit For over a century Holley has driven the cutting edge of fuel system design. That work continues today through Holleys market leading EFI products as well as through Holleys family of best in industry