16811-40 Cylinder Head Bolt Kits for Sidevalves

Keeping the heads sealed on a vintage 45" or Servi-Car requires hardware you can trust. This Colony cylinder head bolt kit is a complete solution, including the head bolts, nuts, and washers needed for a professional installation. These components are accurately machined from high-strength steel and hardened to original Harley-Davidson specifications to prevent stretching under heat and pressure. The bolts feature rolled threads for superior strength and a perfect fit every time. To ensure they look as good as they perform, everything is plated for maximum corrosion resistance. This kit replaces OEM 16811-40 and is sold as a set, providing the durability required for long-term sidevalve operation.