Parallel-ground, hardened washers included. Engine:390 to 428 FE. Material:8740 Chromoly. Number Of Bolts Per Cap:2 Bolt. Fastener Style:Bolt. Head Style:12-Point. Wait for an RGA number to be issued.
ARP 134-5202 Main Cap Fasteners 4-Bolt Main SBC 350, 400 Hex
ARP 135-5402 Main Cap Fasteners - 2-Bolt Main Big Block Chevy 396 402 437 454
ARP 134-5601 Main Cap Fasteners - 4-Bolt Main Small Block Chevy 302 327 350 400
ARP 135-5002 Main Cap Fasteners-2-Bolt Main BBC 396, 402, 427, 454 Hex
ARP 134-5401 Main Cap Fasteners - 2-Bolt Main Small Block Chevy 327 350 400 Hex
ARP 234-5501 Main Cap Fasteners - 2-Bolt Main Small Block Chevy 302 327 350 400
