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, 5/16 in. ID, 0.563 in. OD, 0.063 Thick, Cad Plated, Each

ARP Washer, Hardened, High Performance, Flat, 5/16 in. ID, 0.563 in. OD, 0.063 Thick, Cad Plated, Each

$0.50

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

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

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ARP Washer, Insert, Washer, Insert, .875 OD X 7/16 ID 10Pk

ARP Washer, Insert, Washer, Insert, .875 OD X 7/16 ID 10Pk

$76.13

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ARP Washer, Hardened, High Performance, Flat, 3/8 in. ID, 0.750 in. OD, Chromoly, Black Oxide, 0.09 in. Thick, Set of 10

ARP Washer, Hardened, High Performance, Flat, 3/8 in. ID, 0.750 in. OD, Chromoly, Black Oxide, 0.09 in. Thick, Set of 10

$19.61

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ARP Washer, Hardened, High Performance, Flat, 3/8 in. ID, 0.675 in. OD, Chromoly, Black Oxide, 0.12 in. Thick, Set of 10

ARP Washer, Hardened, High Performance, Flat, 3/8 in. ID, 0.675 in. OD, Chromoly, Black Oxide, 0.12 in. Thick, Set of 10

$19.61

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ARP Washer, Hardened, High Performance, Chamfer, Flat, 10mm ID, 16mm OD, 1.9mm Thick, Stainless Steel, Polished, Each

ARP Washer, Hardened, High Performance, Chamfer, Flat, 10mm ID, 16mm OD, 1.9mm Thick, Stainless Steel, Polished, Each

$2.70

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