Description
Spark plug wires are the often-overlooked link between your ignition system and combustion chamber—and poor quality wires can cause misfires, performance loss, and unreliable starts. The Moroso Ultra 40 Plug Wire Set delivers consistent spark delivery with a spiral core design that minimizes electromagnetic interference, ensuring clean ignition timing across the RPM range. If you’re building a serious V8 or refreshing an aging ignition system, these cut-to-fit wires give you the reliability and performance needed for street or strip duty.
- Spiral core construction
- 8.65 mm diameter
- Ultra 40 specification
- 135-degree plug boots
- HEI/socket compatible
- Cut-to-fit design
- V8 application
- Blue finish
- Complete 8-wire kit
- MPN: 73802






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