Moroso 73690 Ultra 40 Spark Plug Wire Set - HEI Style Unsleeved

The Moroso Ultra 40 Spark Plug Wire Set is a high-performance ignition solution designed for under-header routing on HEI-style applications. This unsleeved wire set delivers superior spark energy with minimal resistance for improved throttle response and engine performance.

Key Features:

• Ultra 40 construction with low-resistance core for maximum spark energy transfer
• Each wire is precision-cut to the correct length and factory-terminated with locking, corrosion-resistant steel terminals
• High-temperature OEM-style silicone boots bonded to the wire to seal out moisture, fuel, and oil contamination
• Unsleeved design allows for flexible routing in tight engine compartments
• Engineered for under-header installation to avoid exhaust heat exposure
• HEI distributor compatible terminals for secure connection
• Includes color-matched high-temperature plastic wire separators to maintain proper wire spacing and prevent cross-fire
• Available in Moroso's signature blue color

Moroso BlueMax Spark Plug Wires represent professional-grade ignition components trusted by racers and performance enthusiasts. The factory-terminated ends ensure proper fit and eliminate the need for custom crimping, while the sealed boot design provides long-lasting durability in harsh engine bay environments.