Damper Drill Pin Kit

The Damper Drill Pin Kit from FLUIDAMPR is a specialized drilling fixture designed for GM LS-series engine builders and professional mechanics performing harmonic balancer or damper installation and removal work. This kit addresses a critical need in the LS platform community: precision drilling of the crank pin without damaging the crankshaft or surrounding components. Whether you're freshening a stock 5.3L or building a race-spec 427, this tool ensures proper bore alignment during the drilling process, eliminating guesswork and costly rework.

Constructed from high-grade steel, the Damper Drill Pin Kit includes a drill fixture and corresponding drill bit engineered to exacting tolerances specific to LS-series crankshaft geometry. The fixture clamps securely to the crank pin, establishing a repeatable reference point that prevents bit walk and ensures perpendicular drilling—a critical requirement when establishing timing mark reference holes or performing damper retrofit work. The included steel hardware facilitates quick setup and removal, allowing technicians to move between multiple engine builds without lengthy reconfiguration.

This kit is indispensable for LS engine shops, performance builders, and serious DIY enthusiasts who frequently service or modify harmonic dampers on LS-based powerplants. The lightweight, compact design (6.7 x 1 x 8.5 inches) makes storage and transport practical for mobile technicians or shop environments with limited bench space. Proper use of this fixture eliminates improvised drilling methods that risk crankshaft integrity, making it a cost-effective investment that pays for itself on the first professional-level build or repair job.