For GM 3300 And 3800 V6 Cylinder Engines. The 45300 is equipped with the special bolts and adapters to pull the harmonic balancer cleanly without damage to the crank sensor. Order the 45350 Retrofit Kit to use with your Lisle 45500 Harmonic Balancer Puller. 45350 Retrofit Kit for 45500 45310 Bolt (3) 45320 Adapter 45510 Body 46540 Center Screw 46520 Tip *45510 (Body) Must be sent in to warranty *45350 includes GM 3 bolts & adapter *Will not work on a 96 Lt1 Corvette motor