Allstar Performance Crank Pulley Mandrel 4101CSMBK Vacuum Secondary Spring

Vacuum Secondary Spring

5 feet of filtering media (18% more than conventional filters)

AFR's new 220cc is the perfect choice for 347-427ci windsors engines operating from 4500 RPM and upwards

2014-2018 Ram 2500 4WD

Allstar Performance Crank Pulley Mandrel 4101CSMBK Vacuum Secondary SpringKit prevents mandrel bolt breakage and is made specifically for use with Allstar ALL31030 crank pulley. Mandrel is attached to the crankshaft pulley with three bolts, while the vibration damper is retained with the stock bolt. The mandrel bolt is then connected to the mandrel not to the crankshaft to reduce engine harmonics (helps prevent loosening or breaking). Kit includes spacers, pulley guides, and bolts to work effectively with most 3 , 4 , and 5