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, Chamfer, Flat, 10mm ID, 15mm OD, 2mm Thick, Chromoly, Black Oxide, Set of 2

ARP Washer, Hardened, High Performance, Chamfer, Flat, 10mm ID, 15mm OD, 2mm Thick, Chromoly, Black Oxide, Set of 2

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ARP Washer, Hardened, High Performance, Chamfer, Flat, 14mm ID, 39.4mm OD, 7mm Thick, Chromoly, Black Oxide, Each

ARP Washer, Hardened, High Performance, Chamfer, Flat, 14mm ID, 39.4mm OD, 7mm Thick, Chromoly, Black Oxide, Each

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ARP Washer, 5/16 ID .655 OD Stainless Steel Chamfer

ARP Washer, 5/16 ID .655 OD Stainless Steel Chamfer

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ARP Washer, Insert, Washer, Insert, 5/16 in. ID - .380 in. OD, Each

ARP Washer, Insert, Washer, Insert, 5/16 in. ID - .380 in. OD, Each

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ARP Washer, Hardened, High Performance, Chamfer, Flat, 10mm ID, 22mm OD, 3.2mm Thick, Chromoly, Black Oxide, Set of 2

ARP Washer, Hardened, High Performance, Chamfer, Flat, 10mm ID, 22mm OD, 3.2mm Thick, Chromoly, Black Oxide, Set of 2

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ARP Washer, Hardened, High Performance, Chamfer, Flat, 5/16 in. ID, 0.625 in. OD, 0.120 Thick, Stainless Steel, Polished, Set of 2

ARP Washer, Hardened, High Performance, Chamfer, Flat, 5/16 in. ID, 0.625 in. OD, 0.120 Thick, Stainless Steel, Polished, Set of 2

$6.45