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, 7/6 in. ID, 0.750 in. OD, Chromoly, Black Oxide, 0.12 in. Thick, Set of 10

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

$18.66

ARP Washer, Hardened, High Performance, Chamfer, Flat, 10mm ID, 19.2mm OD, 2.3mm Thick, Stainless Steel, Polished, Set of 2

ARP Washer, Hardened, High Performance, Chamfer, Flat, 10mm ID, 19.2mm OD, 2.3mm Thick, Stainless Steel, Polished, Set of 2

$6.09

ARP Washer, Hardened, High Performance, Chamfer, Flat, 5/16 in. ID, 0.655 in. OD, 0.075 Thick, Stainless Steel, Polished, Each

ARP Washer, Hardened, High Performance, Chamfer, Flat, 5/16 in. ID, 0.655 in. OD, 0.075 Thick, Stainless Steel, Polished, Each

$2.10

Trick Flow Head Bolt Washers, Steel, Black Oxide, .450 in. to .813 in, .115 in. Thick, Set of 10

Trick Flow Head Bolt Washers, Steel, Black Oxide, .450 in. to .813 in, .115 in. Thick, Set of 10

$23.78

Manley Washer, 3/8", Each

Manley Washer, 3/8", Each

$0.85