Designed for nitro buggy and truck racing, this is the R5 cold glow plug from HPI.
Includes: Glow plug and brass spacer
Requires: Installation into the engine with a 4-way wrench
Height: 0.70 (17.8mm)
Thread size: 1/4-32
Note: HPI recommends this plug for all of their .15 size engines but will work for any engine that needs a cold glow plug.