Moroso 73725 Ultra 40 Spark Plug Wire Set Small Block Chevy HEI 135 Degree

The Moroso 73725 Ultra 40 unsleeved custom-fit ignition wire set is one of the most powerful and RFI/EMI-resistant wires available for racing today. This wire set is specifically designed for small block Chevrolet engines with HEI distributors, featuring 135-degree spark plug boots and over-valve-cover routing for clean installation in header-equipped applications.

Advanced Wire Construction:

• 8.65mm wire diameter with Kevlar core that's four times stronger than Aramid cores
• 40 ohms of resistance per foot with spiral-wound nickel/copper alloy conductor wrapped at the optimum ratio to produce the highest level of spark energy
• Closely-woven fiberglass impregnated with high-voltage, leak-resistant silicone adds up to 8,000 volts of extra insulation
• Extra-thick EPDM layer for greater dielectric strength
• High-temperature silicone boots can withstand heat up to 600 degrees
• Locking stainless steel plug terminals for secure connections

Performance Benefits:

• Highest spark energy transfer for improved combustion
• Produces the lowest level of electromagnetic and radio frequency interference
• Extra insulation protects against exhaust header heat, chaffing and contaminants to extend wire life
• Factory-terminated at each end with precision-fit terminals
• Pre-cut to correct lengths for small block Chevy with HEI distributor

These unsleeved wire sets are designed for racers who demand maximum performance and reliability. Each wire is manufactured in the USA at Moroso Wire Technologies in Philadelphia, PA, ensuring consistent quality and performance.