Features and Benefits:
- Works deep-hole pings and hemi engines
- Extends spark plug hole 7.5 inches
- Attach compression gauges easily
- 14mm thread diameter
- Steel 1144 alloy
This extension is 8" in length and brings a spark plug hole above the valve cover on deep plug hole and HEMIspherical engines for easy compression gauge attachment. The O-Ring seal allows complete compression transfer. Comes with a Lifetime Warranty.
