ARP 430-6809 Lower Pulley Bolt Kit for Chevrolet Small Block. Big Block. 3-piece. ARP Stainless. hex ymm_60 250˝ Thread Size 5/16˝ Fits

250˝ Thread Size 5/16˝ Fits Following Engines:Ford Big-Block FE

Many connecting rod manufacturers have chosen ARP bolts as standard equipment because of their material

The rounded "nose" and the linear hexagonal part serve as a guide to the nut

Peak/Recall via gauge face buttons

Bronco 1978-1996

ARP 430-6809 Lower Pulley Bolt Kit for Chevrolet Small Block. Big Block. 3-piece. ARP Stainless. hex ymm_60 250˝ Thread Size 5/16˝ FitsLower Pulley Bolt Kit Chevrolet Small Block, Big Block, 3 piece, ARP Stainless, hex Specifications Socket Size(s) 3 8 hex High Performance 180,000psi UHL 0. 750 Thread Size 3 8 24 washers included Fits Following Engines: CHEVROLET Small Block, Big Block