Transmission Cases

29 products

Our range of Transmission Cases for Harley-Davidson covers transmission case castings for 1941-1951 WL 45 inch Flathead and 1932-1963 Servi-Car Harley-Davidson models, alongside fitments for wider vintage Harley-Davidson drivetrain rebuilds. Iron City Motorcycles in Leeds is an authorised Harley-Davidson dealer, and transmission cases are the core structural castings of a Harley-Davidson gearbox, where genuine Harley-Davidson or precision-reproduction parts are essential for rebuilding a damaged or cracked vintage case. You will find genuine Harley-Davidson OEM transmission cases and Samwel's specialist vintage-pattern reproduction cases, giving you authentic rebuild options for these long-running 45 inch Flathead and Servi-Car platforms. Whether you are restoring a WLA, refreshing a civilian 45 inch Flathead or completing a Servi-Car rebuild, the correct transmission case is here. Browse the full range below.

OEM Replacement Parts OEM Only — Active Genuine H-D & replacements Tap to clear filter Custom & Performance Aftermarket Only — Active Upgrades & Aftermarket Tap to clear filter
Bike BuilderBuild your bike →
Your Selection:

Showing 1–29 of 29 TRANSMISSION/DRIVELINE

Top Brands

Free UK Delivery

On orders over £100

14-Day Returns

Easy & hassle-free

Authorised Dealer

Iron City Motorcycles

Secure Payment

256-bit encryption

It looks like you're in Europe

Would you like to view prices in €?