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, 1/2 in. ID, 0.875 in. OD, Chromoly, Black Oxide, 0.12 in. Thick, Set of 10

ARP Washer, Hardened, High Performance, Flat, 1/2 in. ID, 0.875 in. OD, Chromoly, Black Oxide, 0.12 in. Thick, Set of 10

$21.14

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ARP Washer, Hardened, High Performance, Chamfer, Flat, 12mm ID, 19.1mm OD, 3mm Thick, Chromoly, Black Oxide, Each

ARP Washer, Hardened, High Performance, Chamfer, Flat, 12mm ID, 19.1mm OD, 3mm Thick, Chromoly, Black Oxide, Each

$2.34

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Trick Flow Head Bolt Washer, Steel, Black Oxide, .450 in. Inside Diameter, .116 in. Thick, Each

Trick Flow Head Bolt Washer, Steel, Black Oxide, .450 in. Inside Diameter, .116 in. Thick, Each

$18.98

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ARP Washer, Hardened, High Performance, Flat, 5/16 in. ID, 0.655 in. OD, 0.075 Thick, Chromoly, Black Oxide, Each

ARP Washer, Hardened, High Performance, Flat, 5/16 in. ID, 0.655 in. OD, 0.075 Thick, Chromoly, Black Oxide, Each

$0.82

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Dart Washer 1/2 ground D shaped

Dart Washer 1/2 ground D shaped

$7.45

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