Ultra 40 Plug Wire Set - Blue

The MOROSO Ultra 40 Plug Wire Set in blue is a spiral core ignition wire system designed for high-performance engines that require reliable spark delivery and noise suppression. This set is ideal for those rebuilding classic muscle cars, tuning modern street engines, or maintaining daily drivers, as quality plug wires are essential for consistent combustion and engine efficiency.

MOROSO's spiral core construction features a carbon-composite center conductor with a silicone jacket, providing a consistent impedance of 40 ohms per foot. This moderate resistance minimizes electromagnetic interference that can affect engine performance, while the spiral design reduces capacitive coupling between wires. The blue silicone jacketing is heat-resistant, flexible, and designed to withstand underhood temperatures, as well as being resistant to oil, coolant, and UV degradation.

Street enthusiasts and weekend mechanics prefer MOROSO wire sets for engines where factory wiring has deteriorated or when upgrading to higher-output ignition systems. This set is compatible with both carbureted and fuel-injected platforms, making it a versatile choice for various applications.