Use this 130-tooth, 14.5-pound aluminum flywheel with any 5.7L/6.1L HEMI engine to reduce rotating mass and inertia, for quicker engine acceleration. Flywheel has a steel service friction sufrace. Accepts 10.5" Mopar Race, Muscle, or Street/Strip diaphragm clutch covers. Use Mopar small block starter P5249644AB