Active Fuel Management Valve Lifters. The Active Fuel Management AFM Engine Valve Lifter and Guide Kit; Set of 16 is designed to optimize engine performance by precisely controlling valve operation in compatible GM LS engines. This kit replaces worn or failed lifters and guides, ensuring smooth engine function, improved fuel efficiency, and restored vehicle performance. It is an essential maintenance component for vehicles equipped with AFM technology.

Construction and Appearance. The lifters are made from durable steel to withstand engine operation stresses, while the guides are constructed from high-quality plastic for accurate valve alignment. The components utilize a precise hydraulic design to deliver quiet and efficient valve lifter action, finished with a functional metal texture suitable for engine environments.

Installation. Installation is moderately complex and generally requires professional mechanical skills for correct removal and replacement of lifters and guides. It does not require drilling, but careful handling and proper alignment are crucial for optimal performance.

Warranty. This product includes a 2-year warranty covering manufacturing defects and workmanship.

Application. Specifically designed for 2007 to 2020 Tahoe models with LS engines featuring OHV configuration and Active Fuel Management technology.

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