O.S. Engines Glow Gas Plug G5 GGT15 FEATURES: For use with O.S. GG series gasoline powered engines that use a glow plug instead of a spark plug for ignition Specifically designed for a gasoline/oil mixture Uses standard glow igniter;INCLUDES: G5 Glow Plug with Washer COMMENTS: Not for use with glow (nitromethane) powered engines.;Glow Gas Plug G5 GGT15