Ultra Plug Wire Set GM LS 9.75 Long Black

The Ultra Plug Wire Set GM LS 9.75 Long Black by MOROSO is designed for high-performance LS-series engine builds, ensuring reliable ignition performance where precise spark timing is essential. This wire set is ideal for various applications, including street machines, bracket racers, and daily-driven performance vehicles.

Engineered specifically for GM LS platforms, the Ultra series wires feature 9.75-inch lengths that are optimized for stock and mildly modified engine bay layouts. The black finish is resistant to oil exposure, UV radiation, and thermal cycling, which is crucial for longevity in high-heat environments. The wire construction minimizes electromagnetic interference (EMI) while maintaining low resistance, enhancing combustion efficiency and throttle response.

LS engine builders, from those performing bolt-on cam swaps to full stroker combinations, will appreciate the proper wire fitment that respects engine bay packaging and maintains spark plug accessibility during service intervals. This wire set is a foundational component for achieving optimal engine efficiency and cold-start reliability.