The Scott Sleeveless Chevrolet Small Block Straight Boot Over Valve Cover HEI NS-421 set features high-temp silicone plug boots with each cylinder numbered. Stainless steel spark plug terminals connect to wire-wound suppression cores. Cylinder and distributor boots are secured with durable shrinks for improved longevity.
- Fits Small Block Chevy engine (over valve cover)
- 8mm gray wire
- Fits HEI style distributor
- 30 Ohms per foot
- 90° distributor boots - straight spark plug boots