Program Engineering Pontiac 421-428-455 Center Main Caps Billet Steel PRO-P455C
Pontiac 421-428-455 Steel 4-Bolt Main Caps with Dowel Pins (Set of 3) by Program Engineering *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
- Item Requires Shipping
- 18.0 lbs.
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