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, 12mm ID, 25.3mm OD, 3mm Thick, Chromoly, Black Oxide, Set of 10

ARP Washer, Hardened, High Performance, Flat, 12mm ID, 25.3mm OD, 3mm Thick, Chromoly, Black Oxide, Set of 10

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ARP Washer, Hardened, High Performance, Flat, 3/8 in. ID, 0.725 in. OD, Chromoly, Black Oxide, 0.12 in. Thick, Each

ARP Washer, Hardened, High Performance, Flat, 3/8 in. ID, 0.725 in. OD, Chromoly, Black Oxide, 0.12 in. Thick, Each

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ARP Washer, Hardened, High Performance, Flat, 3/4 in. ID, 2.000 in. OD, Chromoly, Black Oxide, 0.275 in. Thick, Each

ARP Washer, Hardened, High Performance, Flat, 3/4 in. ID, 2.000 in. OD, Chromoly, Black Oxide, 0.275 in. Thick, Each

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ARP Washer, Insert, Washer, Insert, .995 OD X 9/16 ID 2Pk

ARP Washer, Insert, Washer, Insert, .995 OD X 9/16 ID 2Pk

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MANLEY Flat Washer, Steel, Black Oxide, Hardened, 0.460 in. I.D, 0.762 in. O.D, 0.125 in. Thick, Each

MANLEY Flat Washer, Steel, Black Oxide, Hardened, 0.460 in. I.D, 0.762 in. O.D, 0.125 in. Thick, Each

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