Made in USA. Melling offers an Engine Cylinder Deactivation Kit for converting Active Fuel Management engines to a Non-Active Fuel Management engines. The Melling Deactivation Kit includes all components need to complete the changeover. Vehicle Will Not Be CARB Compliant After The Vehicles Engine Control Module/Power Train Control Module Is Reprogramed. The kit includes (1) MDM Delete Camshaft, (4) Non-Active Fuel Management lifter guides, (16) Non-Active Fuel Management Hydraulic Roller Lifters and (4) Non-MDS Engine Plugs. All Melling Engine Cylinder Deactivation engine components are developed, engineered, tested and manufactured with the highest standards of quality and materials.