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OPGI Price: $26.95
Part Type: (P) High Performance, designed to improve performance
Sold As: SET
2017 Chevelle Catalog Page: 4182018 Chevelle Catalog Page: 528
With their reduced bolt head size, it's a lot easier to tighten-up your intake manifold when using ARP intake manifold bolts. Instead of a 9/16"-bolt head size, these ARP bolts use a 3/8" size bolt head, which allows you to use a smaller wrench and get in those tight spots to snug up the bolts.