Moroso 73859 Black Sleeved Ultra 40 8.65mm Spark Plug Wire Set

The Moroso 73859 is a direct-fit, sleeved Ultra 40 spark plug wire set engineered specifically for 4-cylinder Ford 2.3L/2300 engines, including Mini Stock and Pony Stock circle track racing applications. This professional-grade ignition wire set delivers maximum spark energy while providing superior protection against the harsh engine bay environment.

Key Features:

• 8.65mm diameter wire with optimized 40 ohms of resistance per foot
• Spiral wound nickel/copper alloy conductor for maximum spark energy delivery
• Kevlar core construction provides four times the tensile strength of standard aramid fiber cores
• Black fiberglass sleeving adds up to 8,000 volts of extra dielectric strength
• Protects against exhaust header heat, chafing, and contaminants to extend wire life
• 90-degree distributor ends with straight spark plug ends for optimal routing
• Optimized EMI/RFI resistance for clean signals and reliable performance
• Includes pre-made HEI and non-HEI coil wires (23" and 30")
• Wire lengths: 32.25", 29.25", 27.5", 27.5"

Moroso Ultra 40 Race Wire represents decades of racing refinement and is used in the highest levels of motorsports, from Top Fuel drag racing to NASCAR. The closely woven fiberglass sleeving impregnated with high-voltage-leak resistant silicone provides exceptional protection while maintaining the wire's ability to resist outside electrical pulses. Complete, ready-to-install set designed for racers who demand professional-grade performance and reliability.