Transmission Fill Plugs/Dipsticks

1 products

Our range of Transmission Fill Plugs/Dipsticks for Harley-Davidson covers the combined fill plug and dipstick units used on 1936-1986 4-speed Big Twin Harley-Davidson transmissions. Iron City Motorcycles in Leeds is an authorised Harley-Davidson dealer, and combined fill-plug-and-dipstick units let a Harley-Davidson owner check transmission oil level without removing a separate cap, a genuinely useful feature on a service-owned 4-speed Big Twin. You will find Gardner-Westcott's precision-engineered fill-plug-and-dipstick combinations, manufactured to match the original factory thread pitch and dipstick geometry used across five decades of Harley-Davidson 4-speed engineering. Whether you are refreshing a Shovelhead 4-speed drivetrain, restoring a Panhead gearbox or completing a 4-speed FL bagger service, the correct fill plug and dipstick is here. Browse the full range below.