Coil Wire - Red 36in HEI/HEI

The QUICKCAR RACING PRODUCTS Coil Wire — Red 36in HEI/HEI is a precision ignition harness designed for high-performance racing engines and marine powerplants that rely on HEI (High Energy Ignition) distributor systems. This 36-inch spiral-core coil wire delivers reliable spark transmission from the ignition coil to the distributor, with a sleeved construction that protects the core from thermal stress, vibration, and electrical interference commonly encountered in marine engine compartments and high-RPM racing environments.

The 11.5mm spiral core construction provides optimal impedance matching for HEI ignition systems, minimizing voltage drop and ensuring consistent spark energy across engine operating ranges. The sleeved design adds durability and heat resistance, which is critical in marine applications where engine bay temperatures can spike during extended operation and salt-air corrosion is a constant threat. The red color aids in engine bay identification and maintenance, allowing quick visual confirmation of proper coil wire routing during inspection or service intervals. At 36 inches in length, this wire accommodates mid-sized marine engines and racing platforms with standard firewall-to-distributor distances, reducing the need for adapter harnesses.

This coil wire is engineered for enthusiasts running HEI systems in marine motors, vintage race engines, street rods, and high-performance applications where spark quality directly impacts throttle response and reliability. Boaters and engine builders choose spiral-core ignition harnesses for their superior noise rejection and consistent performance under load—especially important when operating in salt-water environments where corrosion can degrade inferior harness materials. The HEI terminal configuration ensures secure connection to both coil and distributor without adapters or modifications.