The Cylinder Deactivation (CD) Manifold is re-engineered to address failure points found in the original OE design. The CD Manifold manages the cylinder deactivation function for optimized fuel economy and engine efficiency. All hardware is included for a convenient and complete repair.

• Re-engineered to address failure points found in the original OE design
• No special tools required
• Plug and play design - recommended to be installed by service technician
• This part has undergone quality testing to ensures a trouble-free performance and conformance to product standards
•  Constructed of aluminum for increased durability and a longer service life.

The AFM activation and deactivation is controlled by the Valve Lifter Oil Manifold or VLOM. The VLOM consists of 4 electronically operated solenoids and is bolted to the top of the engine block beneath the intake manifold assembly. Its job is to direct the flow of pressurized engine oil to the active fuel management intake and exhaust valve lifters. VLOM applies pressurized oil to the AFM lifters when cylinder deactivation is requested, and shuts off that supply of oil to reactivate those cylinders. Cylinder activation and deactivation are both supposed to occur on the base circle of the cam lobe, making the transition from four to eight cylinder mode unnoticeable to the driver. To control contamination a small replaceable oil filter is located in the VLOM inlet oil passageway.