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, .500 in. I.D., .567 in. O.D., Pair

ARP Washer, Insert, Washer, Insert, Chromoly, Black Oxide, .500 in. I.D., .567 in. O.D., Pair

$20.14

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ARP Washer, Hardened, High Performance, Chamfer, Flat, 12mm ID, 37.6mm OD, 5.1mm Thick, Chromoly, Black Oxide, Each

ARP Washer, Hardened, High Performance, Chamfer, Flat, 12mm ID, 37.6mm OD, 5.1mm Thick, Chromoly, Black Oxide, Each

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ARP Washers, Chromoly, Black Oxide, .437 in. I.D., .875 in. O.D., Pair

ARP Washers, Chromoly, Black Oxide, .437 in. I.D., .875 in. O.D., Pair

$22.73

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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

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

$2.27

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ARP Washer, Hardened, High Performance, Chamfer, Flat, 7/6 in. ID, 0.750 in. OD, Chromoly, Black Oxide, 0.12 in. Thick, Set of 10

ARP Washer, Hardened, High Performance, Chamfer, Flat, 7/6 in. ID, 0.750 in. OD, Chromoly, Black Oxide, 0.12 in. Thick, Set of 10

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ARP Washer, Hardened, High Performance, Chamfer, Flat, 10mm ID, 19.2mm OD, 2.3mm Thick, Stainless Steel, Polished, Set of 10

ARP Washer, Hardened, High Performance, Chamfer, Flat, 10mm ID, 19.2mm OD, 2.3mm Thick, Stainless Steel, Polished, Set of 10

$28.73

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