2019+ DFM Gen V LT (Dynamic Fuel Management) Lifters  

Also fits all 2007+ AFM (Active Fuel Management) Lifter applications

GM has released the newest design of the de-act lifter for their Dynamic Fuel Management engines and Active Fuel Management engines. These are in stock and ready to ship and are sold individually.  

This new design DFM lifter fits the  Gen V Engine Platform and also is backwards compatible to the Gen IV AFM engines. AFM engines have 4 de-act cylinders, and 4 standard cylinders. The newest DFM engines can have all 8 cylinders as de-act capable.

The new DFM lifter will also work in place of previous AFM applications.  The new design is considered an upgrade from the OE Designed troublesome AFM Lifters. Search for HL-2148S for the non-afm lifters if you need them.

All Made in USA, Elgin replacement auto parts meet or exceed OE specs. Always replace lifter guides when replacing lifters in LS based Gen III, LS based Gen IV, and LT based Gen V engines.

Remember, the spring on top of the lifter is a fuse designed by GM. If any spring ever becomes collapsed, then this lifter fuse is blown the same as an electrical fuse in the fuse box. Replacing the lifter will not solved the problem until the cause is found.

Typically, the lifter fuse collapses when the computer tells the lifter to activate during the incorrect valve timing. This prevents the valve from contacting the piston. the cause is usually a ground-fault-interrupt from the ECM or PCM in AFM Gen IV LS and DFM Gen V LT engines.