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, 5/16 ID .655 OD Stainless Steel Chamfer

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

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ARP Washer, Hardened, High Performance, Flat, 1/4 in. ID, 0.550 in. OD, 0.075 Thick, Chromoly, Black Oxide, Set of 10

ARP Washer, Hardened, High Performance, Flat, 1/4 in. ID, 0.550 in. OD, 0.075 Thick, Chromoly, Black Oxide, Set of 10

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ARP Washer, Hardened, High Performance, Chamfer, Flat, 10mm ID, 22mm OD, 4.1mm Thick, Stainless Steel, Polished, Set of 10

ARP Washer, Hardened, High Performance, Chamfer, Flat, 10mm ID, 22mm OD, 4.1mm Thick, Stainless Steel, Polished, Set of 10

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ARP Washer, Hardened, High Performance, Chamfer, Flat, 10mm ID, 22mm OD, 4.1mm Thick, Stainless Steel, Polished, Set of 2

ARP Washer, Hardened, High Performance, Chamfer, Flat, 10mm ID, 22mm OD, 4.1mm Thick, Stainless Steel, Polished, Set of 2

$20.16

ARP Washer, Hardened, High Performance, Chamfer, Flat, 12mm ID, 22.2mm OD, 3mm Thick, Chromoly, Black Oxide, Set of 10

ARP Washer, Hardened, High Performance, Chamfer, Flat, 12mm ID, 22.2mm OD, 3mm Thick, Chromoly, Black Oxide, Set of 10

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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

$20.58