This listing is for a 1/2-Set of lifters compatible with Chevy GMC 5.3 5.3L 6.0 6.0L Active Fuel Management AFM Valve Lifter (4) AFM DOD & (4) Standard Lifters. Please Note, engine requires two sets !

This listing is for eight (8) Elgin valve lifters manufactured by Delphi for 2005-16 GM family models using the 5.3L 6.0L or 6.2L V-8 engine with Active Fuel Management (AFM). P/N (4) HL-7011S + (4) HL-2148S. These AFM lifters are the 2nd Generation design. This is a half (1/2) set of valve lifters (enough for one bank) required for AFM V-8 engines (4-AFM; 4-non-AFM). Note: Need to order quantity of (2) for full engine set! AFM lifters fail due to a faulty VLOM (valley cover) - Updated VLOM# 12571609 from GM must be installed with new lifter to prevent future failures and warranty coverage.