Low Resistnce Hei Bushin

The Low Resistance HEI Bushing is a precision distributor component engineered for GM HEI ignition systems. This carbon rotor button replacement is designed for engine builders, restoration specialists, and performance mechanics who demand reliable spark timing under high-RPM and high-heat conditions. The low-resistance design minimizes voltage drop across the rotor contact point, ensuring consistent spark delivery to all cylinders and reducing misfire risk in both street and competition applications.

Manufactured to OEM specifications, the Low Resistance HEI Bushing features carbon construction optimized for electrical conductivity while maintaining durability under sustained engine operation. The low-resistance pathway is critical in HEI systems because distributor caps and rotor buttons experience thermal cycling and electrical stress that can degrade contact integrity over time. By reducing resistive losses at the rotor-to-cap interface, this bushing preserves ignition voltage efficiency, improves cold-start behavior, and extends the service life of downstream ignition components. The compact design fits standard GM HEI distributor housings without modification.

This component is essential for anyone rebuilding or upgrading a GM HEI distributor, particularly in small-block and big-block Chevrolet engines found in street rods, muscle cars, and vintage truck restorations. Installation requires only removal of the HEI cap and rotor assembly—no special tools or machine work needed. Direct replacement for worn or corroded original bushings, the Low Resistance HEI Bushing is a cost-effective way to restore ignition performance and reliability without replacing the entire distributor assembly. Compatible with all standard GM HEI ignition caps and rotors.