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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MANLEY Washers, Head Bolt, Chromoly, Natural, .438 in. I.D, .125 in. Thick, Set of 34

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

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ARP Washer, Hardened, High Performance, Chamfer, Flat, 3/8 in. ID, 0.725 in. OD, Stainless Steel, Polished, 0.09 in. Thick, Set of 10

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ARP Washer, Hardened, High Performance, Flat, 3/8 in. ID, 0.625 in. OD, Chromoly, Black Oxide, 0.063 in. Thick, Set of 10

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ARP Washer, 7/16ID Stainless Steel No Chamfer

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MANLEY Washers, Intake Bolt, Chromoly, Polished, .125 in. Thick, Set of 16

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