Fits 3.9 Magnum.  

The unique Friction Free Design has shown average performance gains of 15 to 40 horsepower.

Needle bearing fulcrum and Roller Tip reduces friction, lowers engine oil temperature, increases HP & RPM.

Features: Non-adjustable stock replacement, Bolt-on application, Fits under stock valve covers, Needle bearing full roller fulcrum assembly reduces friction and wear to enhance engine performance, For use in mild-performance applications.
Fits 3.9 Magnum.

Shipping included continental US.