ARP 430-6803 Lower Pulley Bolt Kit for Chevrolet Small Block. Big Block. 3-piece. ARP Stainless. 12pt ymm_30 Specifications Socket Size(s) 10mm 12pt

Specifications Socket Size(s) 10mm 12pt UHL 30mm Thread Length 22mm Grip Length 8mm Thread Diameter-Spacing M8 x 1

200˝ Thread Size 3/8-24 Body Diameter 0

The system achieves over 45% weight reduction compared to the stock exhaust

we recommend remapping the ECU in order to prevent potential »check engine light« warning signals

ARP 430-6803 Lower Pulley Bolt Kit for Chevrolet Small Block. Big Block. 3-piece. ARP Stainless. 12pt ymm_30 Specifications Socket Size(s) 10mm 12ptCHEVROLET Small Block, Big Block, 3 piece, ARP Stainless, 12pt lower pulley bolt kit Specifications Socket Size(s) 3 8 12pt High Performance 180,000psi UHL 0. 750 Thread Size 3 8 16 washers included Fits Following Engines: CHEVROLET Small Block, Big Block.