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, Hardened, High Performance, Flat, 10mm ID, 21.6mm OD, 3mm Thick, Chromoly, Black Oxide, Each

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ARP Washer, Hardened, High Performance, Flat, 7/6 in. ID, 0.995 in. OD, Chromoly, Black Oxide, 0.12 in. Thick, Each

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ARP Washer, Insert, Washer, Insert, .995 OD X 9/16 ID 10Pk

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ARP Washers, Chromoly, Black Oxide, .500 in. I.D, .565 in. O.D, Set of 10

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ARP Washer, Hardened, High Performance, Flat, 10mm ID, 21.6mm OD, 3mm Thick, Chromoly, Black Oxide, Set of 10

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