Ultra 40 Plug Wire Set SBF 302 HEI Black

The Ultra 40 Plug Wire Set SBF 302 HEI from MOROSO is designed specifically for small-block Ford enthusiasts utilizing HEI ignition systems. This wire set is essential for those who prioritize reliable spark delivery and clean aesthetics in their engine bay. Whether tuning a street machine, restoring a classic cruiser, or maintaining daily-driver performance, premium ignition wires are crucial for consistent combustion and starting reliability.

MOROSO's Ultra 40 design features suppression-core construction that balances high dielectric strength with controlled impedance. This is particularly important for HEI systems that operate at higher voltages than conventional points ignition. The black insulation is engineered to resist cracking from engine heat cycling and UV exposure, while the core material effectively prevents electromagnetic noise that can interfere with fuel injection systems or aftermarket engine management computers.

This wire set is purpose-built for 302 cubic-inch small-block Ford engines equipped with HEI distributors, making it ideal for street rods, performance restorations, and any 5.0L applications. Proper wire selection is critical, as incorrect resistance or poor shielding can lead to voltage drops, robbing horsepower and increasing plug fouling, especially in modified or high-compression engines.