The original solenoids in multiple displacement systems (MDS) on certain Chrysler engines fail when their plastic housings become brittle from underhood heat and the oil passages become clogged by sludge. That failure causes a loss of power, rough idle an Product Features:Upgraded design - this MDS solenoid features a durable aluminum housing instead of the failure-prone plastic factory housing, and premium O-rings to restore the system pressure required for proper MDS operationComplete assembly - solenoid includes new O-rings and mounting bolt for a complete repairApplication specific - made to directly replace the original MDS solenoid on certain Chrysler, Dodge, Ram, and Jeep vehiclesTrustworthy quality - vehicle try-on tested, and backed by a team of product experts in the United States and more than a century of automotive experience