Transmission Mainshaft Seal Kits

7 products

Transmission Mainshaft Seal Kits for Harley-Davidson include all the seals and O-rings needed to keep oil inside your gearbox at the mainshaft output. Available from Iron City Motorcycles, an authorised Harley-Davidson dealer in Leeds, these kits fit Softail, Dyna, Touring, Sportster and four-speed Big Twin models. James Gaskets supplies comprehensive seal kits engineered from high-temperature elastomers that resist the heat and friction at the mainshaft bearing. A leaking mainshaft seal can drip oil onto your belt or chain, so replacing it at the first sign of weeping protects your final drive and keeps your workshop floor clean. Browse the full range below.