O.S. Type F Standard Glow Plug "Medium"

This is the O.S. Engines Type F Glow Plug, and is intended for use with O.S. and other brands Four-Stroke Engines. This specially shielded long-reach plug has been designed to be used with four stroke engines. The shield keeps the plug hot for lower idle RPM.

NOTE: Use with fuels containing 5-15% nitro content.