S&S CYCLE Billet Tappet Covers - Polished - Twin Cam 33-5601 Boss imperfections in the casting

Boss imperfections in the casting are maliciously duplicated to represent the casting capabilities of the era

Includes a gasket so it's ready to install

Built-in stinger cone directs air smoothly into the bore of the carburetor or EFI throttle body and reduces turbulence and increases flow

Accepts stock hardware and filler plug

Machined openings around the rim add style and provide additional air flow

S&S CYCLE Billet Tappet Covers - Polished - Twin Cam 33-5601 Boss imperfections in the castingBillet Tappet Covers Polished Twin Cam CNC machined from 6061 T 6 billet aluminum, Billet material provides extra strength and dimensional stability over a wide temperature range; is also free of voids which can cause leaks and oil weeping, Made in the U. S. A.