Vintage Motorcycle Oil Seals, Individual Gaskets & Engine Hardware

Find premium vintage motorcycle oil seals, individual engine gaskets, and essential engine hardware designed for reliable sealing and secure assembly. This collection includes crankshaft seals, camshaft seals, output shaft seals, clutch pushrod seals, individual base gaskets, head gaskets, side cover gaskets, O-rings, copper washers, engine bolts, studs, nuts, and mounting hardware compatible with a wide range of Honda, Yamaha, Suzuki, and Kawasaki motorcycles.

Oil seals and individual gaskets are critical for preventing leaks, maintaining compression, and protecting internal engine components from contamination. Whether you're repairing an oil leak, refreshing a single engine cover, or completing a top-end service, replacing worn seals and gaskets ensures long-term reliability and proper engine performance.

For complete rebuilds, be sure to explore our full gasket kits available in the Gasket Sets Collection, which provide comprehensive coverage for top-end and complete engine overhauls.

Our inventory includes OEM-style replacement seals, high-quality paper and metal gaskets, precision-fit O-rings, and durable engine hardware selected for proper fitment, heat resistance, and compatibility with classic vintage motorcycle engines.

Old Bike Barn specializes in vintage Japanese motorcycle parts and traditional custom components curated by riders who wrench and build.