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, Flat, Chromoly, Black Oxide, .312 in. I.D, .812 in. O.D, .120 in. Thick, Pair

ARP Washer, Flat, Chromoly, Black Oxide, .312 in. I.D, .812 in. O.D, .120 in. Thick, Pair

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ARP Washer, Hardened, High Performance, Chamfer, Flat, 7/6 in. ID, 0.705 in. OD, Stainless Steel, Polished, 0.09 in. Thick, Set of 10

ARP Washer, Hardened, High Performance, Chamfer, Flat, 7/6 in. ID, 0.705 in. OD, Stainless Steel, Polished, 0.09 in. Thick, Set of 10

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ARP Washer, Hardened, High Performance, Flat, 9/16 in. ID, 1.000 in. OD, Chromoly, Black Oxide, 0.12 in. Thick, Each

ARP Washer, Hardened, High Performance, Flat, 9/16 in. ID, 1.000 in. OD, Chromoly, Black Oxide, 0.12 in. Thick, Each

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ARP Washer, Hardened, High Performance, Chamfer, Flat, 5/16 in. ID, 0.675 in. OD, 0.120 Thick, Chromoly, Black Oxide, Each

ARP Washer, Hardened, High Performance, Chamfer, Flat, 5/16 in. ID, 0.675 in. OD, 0.120 Thick, Chromoly, Black Oxide, Each

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