ARP insert washers are designed to protect the top of the bolt holes from galling or collapsing around studs or bolts. They are fully CNC-machined from premium through-hardened 8740 stock.

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ARP Washer, Insert, Washer, Insert, Chromoly, Black Oxide, .312 in. I.D, .625 in. O.D, Pair

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ARP Washer, Hardened, High Performance, Chamfer, Flat, 3/8 in. ID, 0.725 in. OD, Stainless Steel, Polished, 0.09 in. Thick, Each

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ARP Washer, Hardened, High Performance, Flat, 7/6 in. ID, 0.875 in. OD, Chromoly, Black Oxide, 0.12 in. Thick, Each

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