The actuator is a common failure on the HE351/HE300VG turbos Genuine Holset / Cummins actuator. Actuator may need electronic calibration when installed. If your actuator has a wire harness instead of a plug, you will need to order the late version actuator Part # ActuatorHE351VE Part Supercedes 4034309, 4034309H, 4034309RX 12 Month Warranty Replaces/Cross Reference to: Cummins/ Holset: 3778623, 3784299, 3784386, 3788936, 3778619, 4034090, 4034168 Mopar: 68445522AA, 68232771AA, 68244609AA, 68307025AA This Kit Contains: 1x 3788936 Actuator 1x 4031373 Grease 4x 4031417 Wire Ties 2x 4041397 Mounting Bolts 2x 4041398 Mounting Bolts 2x 4042648 Guide Pins 2x 4045389 Actuator Mounting Gasket/Seal 1x 4045390 Actuator Mounting Gasket/Seal