Straub Technologies Straub Master Pack Refill Kit - GM LS-Series 346-9903R 935073 5 thread and 2-5/8" diameter

5 thread and 2-5/8" diameter sealing O-ring

Designed specifically for rectangle port LS3/L92 engines in car and truck applications where hood clearance is not a concern

Tunnel Crossover

Fuel Pump Check Valve Kit

Straub Technologies Straub Master Pack Refill Kit - GM LS-Series 346-9903R 935073 5 thread and 2-5/8" diameterProduct Description: Engine and Accessory Fastener Kit Straub Master Pack Refill GM LS Series With 25 years of experience in the performance industry, Straub Technologies has built relationships with many of the top companies. Our ability to source, design, and sell products to satisfy the performance needs of industry giants and grassroots racers alike has built our reputation as the go to source in the performance industry.