Bolt - Lifter Guide 6mm x 1.0 x 19.0mm

The Bolt - Lifter Guide 6mm x 1.0 x 19.0mm is a critical OEM-spec component engineered by Chevrolet Performance for precision valve train management. This lifter guide is essential for maintaining proper lifter alignment and preventing unwanted lateral movement within the engine block, directly impacting valve timing accuracy and engine durability. Whether you're rebuilding a stock small-block or assembling a high-performance stroker, this guide ensures your valve train operates with factory-intended geometry and reliability.

Dimensioned precisely at 6mm bore with 1.0mm engagement depth and 19.0mm overall length, this lifter guide maintains the exacting tolerances required for consistent lifter travel and minimal side-to-side deviation. The compact 0.03 lb weight reflects its precision-machined aluminum or steel construction, designed to withstand repeated cycles under high valve spring loads without deflection. Proper lifter guide installation eliminates binding, reduces wear on both the lifter body and cylinder head bore, and preserves optimal valve overlap characteristics—critical factors in both street and competition engines.

This component is indispensable for Chevrolet Performance engine builds, classic restoration projects, and any small-block rebuild demanding OEM accuracy. Mechanics and enthusiasts who prioritize long-term reliability and peak power delivery rely on genuine Chevrolet Performance guides to eliminate guesswork during cylinder head assembly. Installation is straightforward during main block machining or head preparation; verify fitment in your specific engine platform before final assembly to ensure proper lifter clearance and valve train harmony.