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, 9mm ID, 17mm OD, 3mm Thick, Chromoly, Black Oxide, Set of 2

ARP Washer, Hardened, High Performance, Flat, 9mm ID, 17mm OD, 3mm Thick, Chromoly, Black Oxide, Set of 2

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ARP Washer, Hardened, High Performance, Flat, 10mm ID, 21.6mm OD, 3mm Thick, Chromoly, Black Oxide, Set of 2

ARP Washer, Hardened, High Performance, Flat, 10mm ID, 21.6mm OD, 3mm Thick, Chromoly, Black Oxide, Set of 2

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ARP Washer, Hardened, High Performance, Chamfer, Flat, 12mm ID, 22.2mm OD, 2.3mm Thick, Stainless Steel, Polished, Each

ARP Washer, Hardened, High Performance, Chamfer, Flat, 12mm ID, 22.2mm OD, 2.3mm Thick, Stainless Steel, Polished, Each

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ARP Washer, Hardened, High Performance, Flat, 7/6 in. ID, 0.750 in. OD, Cad Plated, 0.063 in. Thick, Each

ARP Washer, Hardened, High Performance, Flat, 7/6 in. ID, 0.750 in. OD, Cad Plated, 0.063 in. Thick, Each

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ARP Washer, Hardened, High Performance, Flat, 1/2 in. ID, 1.350 in. OD, Chromoly, Black Oxide, 0.245 in. Thick, Each

ARP Washer, Hardened, High Performance, Flat, 1/2 in. ID, 1.350 in. OD, Chromoly, Black Oxide, 0.245 in. Thick, Each

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