Primary Seals

3 products

Our range of primary seals for Harley-Davidson covers replacement crankshaft and primary cover seals across decades of Big Twin and modern Touring fitments. Iron City Motorcycles, an authorised Harley-Davidson dealer in Leeds, stocks primary seals from James Gaskets, Colony and Cometic — three names long associated with high-quality sealing components for Harley-Davidson rebuilds. Fitment covers late-1984–1986 4-speed Big Twin, late-1984–2025 5- and 6-speed Big Twin, 2007–2025 Softail, 2006–2017 Dyna, 2006–2025 FLT/Touring, plus 2018–2025 Softail, 2017–2025 FLT/Touring and 2017–2025 Trikes. Primary seal failure leads to oil seepage either into the primary case or out around the engine sprocket shaft — neither is acceptable on a properly serviced bike. Replacing seals at primary service intervals is cheap insurance against drip patches in the garage. Browse the full range below.