MSD 8.5MM SPARK PLUG WIRE SET - BLACK Chevy, '74-'76 HEI #31363

The MSD 8.5mm Black Spark Plug Wire Set is engineered for high-performance Chevy engines from 1974–1976 equipped with HEI ignition. Designed to deliver maximum spark energy with minimal resistance, these wires enhance ignition performance, improve throttle response, and ensure reliable combustion under any driving condition. Key Features & Benefits 8.5mm Super Conductor wire for extremely low resistance and maximum energy transfer. High EMI suppression protects sensitive electronics from interference. Durable black silicone jacket resists heat, abrasion, and chemicals. Custom fit for Chevy 74–76 HEI applications for easy installation. Improves ignition performance for smoother idle, better throttle response, and enhanced power.