GLOW PLUG P7
This is the P7 Glow Plug for use in the OS Max .21 VZ-R and .12 TR engines.
This glow plug is different from the conventional glow plug. It is made to fit the Inner Head of the OS .21 VZ-R and .12 TR engines.
It has a slight taper on the bottom allowing it to sit flush with
the combustion chamber.