Program Engineering Pontiac 421-428-455 Center Main Caps Billet Steel Main Caps, Splayed Outer Bolts PRO-455C4A
421-428-455 Pontiac Main Caps Splayed Outer Bolts w/Dowel Pins Comes with Bolts and Hardened Washers For outer Splayed Bolt (Set Of 3) by Program Engineering Splayed Main Caps *BLOCK MUST BE ALIGN BORED*
ARP Main Stud Kit Recommended- Part# ARP-194-5601
ALL aftermarket billet main caps require line boring and require the thrust surface to be machined to match your particular block
*REQUIRES ARP 2-BOLT MAIN STUDS
- Item Requires Shipping
- 18.0 lbs.
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