Moroso 51074 Ultra Series Spark Plug Wire Set Big Block Ford 351C/390/429/460 HEI Black

The Moroso 51074 Ultra Series spark plug wire set delivers high-quality performance for Big Block Ford engines including 351 Cleveland, 390, 429, and 460 applications. These wires meet or exceed OEM specifications without the dealer prices, making them an excellent choice for street performance and racing applications.

Key Features:

• 8mm diameter wire with 350 ohms of resistance per foot
• 135-degree silicone spark plug boots for high-heat protection and header clearance
• HEI distributor terminals with snap-lock connections
• Spiral core conductor constructed with stainless nickel alloy wire wound 32 times per inch around a latex-coated heavy fiberglass core
• Dual-layer high-heat resistant EPDM jacket separated by nylon reinforcing pull tape for added strength
• Unsleeved black wire construction
• Made in the USA at Moroso Wire Technologies

Construction Details:

• Inner insulation layer provides optimum dielectric strength while outer jacket offers superior heat and flame resistance
• Optimized combination of capacitance, inductance, and resistance provides maximum spark energy and EMI protection
• Sure-grip terminals ensure positive connections at both spark plug and distributor

Moroso has more than 50 years of experience supplying spark plug wires to top NASCAR and NHRA teams, bringing professional-grade quality to street and strip applications. This wire set is specifically engineered for Big Block Ford engines with HEI distributors and provides reliable ignition performance with excellent electromagnetic interference suppression.