ACDelco Lifter Guide Retainer Bolts

ACDelco lifter guide retainer bolts are specialized, small metric fasteners designed to secure the plastic lifter trays (guides) to the engine block in GM Gen III/IV/V LS and LT series engines. They ensure the roller lifters stay properly aligned with the camshaft, preventing rotation. The hardware is machined from factory materials and specifications to ensure proper fitment and performance.

Additional notes:

* These bolts are critical for applications such as 1999-2013 GMC Sierra, 2014-25 Chevrolet Silverado, and other Gen III/IV LS-based engines
* Function: They fasten the plastic guide trays (lifter buckets) to the engine block, holding four roller lifters per tray in place
* Essential when doing camshaft or lifter replacements
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