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, 3/8 in. ID, 0.750 in. OD, Chromoly, Black Oxide, 0.012 in. Thick, Each

ARP Washer, Hardened, High Performance, Chamfer, Flat, 3/8 in. ID, 0.750 in. OD, Chromoly, Black Oxide, 0.012 in. Thick, Each

$1.81

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

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ARP Washer, Hardened, High Performance, Flat, 1/4 in. ID, 0.550 in. OD, 0.075 Thick, Stainless Steel, Polished, Set of 2

ARP Washer, Hardened, High Performance, Flat, 1/4 in. ID, 0.550 in. OD, 0.075 Thick, Stainless Steel, Polished, Set of 2

$2.87

ARP Washer, Hardened, High Performance, Chamfer, Flat, 1/4 in. ID, 0.550 in. OD, 0.075 Thick, Stainless Steel, Polished, Set of 2

ARP Washer, Hardened, High Performance, Chamfer, Flat, 1/4 in. ID, 0.550 in. OD, 0.075 Thick, Stainless Steel, Polished, Set of 2

$2.87

ARP Washer, Hardened, High Performance, Flat, 1/2 in. ID, 2.000 in. OD, Chromoly, Black Oxide, 0.275 in. Thick, Each

ARP Washer, Hardened, High Performance, Flat, 1/2 in. ID, 2.000 in. OD, Chromoly, Black Oxide, 0.275 in. Thick, Each

$21.00

ARP Washer, Insert, Washer, Insert, 7/16 in. ID - .812 in. OD, Each

ARP Washer, Insert, Washer, Insert, 7/16 in. ID - .812 in. OD, Each

$19.58