O.S. Engine - Glow Plug #P7 (Turbo) Medium   [OS_P7]

QUALITIES:

For use with fuel containing 10-20% nitromethane
Metal Construction

SPECS:

General Length: 17mm (.67")
Thread size: M8x.75mm

REVIEWS:

This glow plug differs through the conventional glow plug. It is
made to fit the internal Head associated with the OS .21 VZ-R and .12 TR engines.
It has a slight taper regarding base allowing it to stay flush with
the combustion chamber.

How to pick the Right Glow Plug? Please reference these website link.
http://www.osengines.com/accys/choosing-glowplugs.html