12mm ID Washers 10pk .875 OD Chamfer

The 12mm ID Washers 10pk .875 OD Chamfer from ARP are essential fastening components for engine builders and performance enthusiasts. These precision washers are designed to distribute clamping load evenly across critical fastener interfaces, preventing deformation on aluminum cylinder heads and intake manifolds. They are ideal for applications such as stroker motor assembly and forced induction platform rebuilds.

Each washer features a precisely machined 12mm inner diameter that allows for smooth installation over fasteners, while the 0.875 inches outer diameter spreads load across a larger surface area than standard washers. The chamfered edge reduces stress concentration and ensures a flush fit against irregular surfaces, facilitating easier installation and removal in tight engine bays. ARP's stringent manufacturing tolerances guarantee consistent fit and performance across all washers in the pack.

These washers are particularly beneficial when using ARP fasteners on aluminum surfaces that are prone to galling or embedment under high clamp loads. Engine builders often specify them for head bolt upgrades, ensuring integrity and reliability in engine assembly. Their design and material quality make them indispensable for anyone working on high-performance engine components.