Description
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)






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