Moroso Ultra 40 Plug Wire Set - Black 73814

A reliable plug wire set is critical for maintaining consistent ignition timing and throttle response across all eight cylinders. The Moroso Ultra 40 delivers low-resistance spark delivery with a spiral core design that minimizes electromagnetic interference—essential for both street and race applications where ignition consistency directly impacts horsepower and drivability. Cut-to-fit construction lets you dial in the exact length you need, eliminating excess wire that can rattle or create heat buildup in tight engine bays.

• 8.65 mm diameter
• Spiral core construction
• 90-degree plug boots
• HEI/socket style connectors
• Cut-to-fit kit
• Black finish
• V8 applications
• Universal fitment (custom length)