Radium Engineering uses one of the largest filtration elements in the industry

Crafted for long-term durability

and S52 inline-six engines

Compatibility & Installation:

BMW / Toyota B58 Lifter Shim Set by Ferrea Engine Harness Radium Engineering uses one ofMaximize the performance of your BMW Toyota B58 engine with the Ferrea Racing Lifter Shim Set. Designed to improve valvetrain stability, these precision shims fit beneath the factory hydraulic lifters, reducing their travel distance. This helps eliminate valve float, ensuring consistent power delivery at high RPMs and under heavy boost. Prevent Valve Float at High RPMs In high revving or turbocharged B58 setups, excess stress on the valvetrain can