50-0418-S Head bolt washer .100" thick

These S&S head bolt washers are a simple but essential component for any top-end assembly. Measuring .100-inch thick, they are designed to provide a flat, hardened surface for head bolts to torque down against, ensuring even clamping force across the cylinder head. They are suitable for both stock and custom applications on 1984 to 1999 Evolution Big Twins and 1999 to 2017 Twin Cam engines. When you are dealing with the high pressures of a V-Twin combustion chamber, using the right washers is key to preventing head gasket leaks and ensuring the fasteners do not gall the head surface during the final torque sequence.