The PowerSource Chevrolet Small Block Under Header HEI PS-407 set features high-temp silicone plug boots with each cylinder numbered. Stainless steel spark plug terminals connect to wire-wound suppression cores, all wrapped in a 9mm high-temp fiberglass sleeve.
- Fits SB Chevy engine (under headers)
- 8mm wire
- Fits HEI Style Distributor
- Available in multiple colors
- 300 Ohms per foot
- High-temp fiberglass sleeving
- 90° distributor boots - 90° spark plug boots