Are you planning on rebuilding your engine? Factory tappets are often more prone to wear, cracking, or surface failure under higher spring pressures, aggressive cam profiles, increased RPM, or elevated cylinder pressure. Steel tappets are significantly stronger and more resistant to deformation, allowing them to handle greater loads without collapsing or prematurely wearing out. Upgrade your valvetrain with Hamilton's 1.45″ Steel Tappets, engineered to handle 110# or heavier valve springs in high-rpm, performance-focused diesel engines. Built for superior wear resistance and consistent lift, these tappets help maintain precise valvetrain geometry under extreme conditions. Whether you’re chasing horsepower gains or simply seeking bulletproof reliability under heavy load, our 1.45″ Steel Tappets provide the strength and consistency your engine demands.

FITMENT NOTE:

• You must have a steel camshaft in order to run these