ACCEL SuperStock 4000 spark plug wire sets upgrade an OE ignition system for higher spark delivery on street-driven engines. A 450-degree-F silicone jacket is extruded over a woven fiberglass braid and high-dielectric EPDM insulation for reliable ignition performance.
- Part number: 4039
- Type: Spark plug wire set
- Wire diameter: 8mm
- Core: Copper
- Spark plug boot angle: 90 degree
- Wire temp rating: 450 degrees F
- Color: Yellow
WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
FAQ
What is the ACCEL 4039 wire set?
It is an 8mm SuperStock 4000 copper-core spark plug wire set with 90-degree boots, in yellow.
What is the temperature rating?
The silicone jacket is rated to 450 degrees F.
What is the boot angle?
90 degree. The straight-boot version is sold as 4038.

