O.S. Engine OS71641500 P5 Hot Turbo Glow Plug for R/C Nitro Engines  [OS71641500]

Overview of the Turbo P5 Hot

This turbo-style P5 HOT glow plug serves as an ignition element for nitro R/C model engines. The P5 heat rating means the filament runs hotter than plugs with lower numbers, which influences how quickly and how consistently the filament ignites the charge in small engines.

Its practical benefit is improved cold-start performance and a steadier idle in engines that respond to a higher heat element. As part of tuning, changing plug heat range is one tool to tweak combustion characteristics, used in combination with needle and carburetor adjustments; the plug itself changes the filament thermal profile rather than fuel flow.

Installation guidance: only fit to engines with compatible threads, use the proper glow-plug tool, and avoid over-tightening to protect threads. Ensure the plug is properly seated and the combustion chamber contains no foreign material. Test starting and idle before making further tuning changes.

Handling advice: this product is for model engines only. Do not touch the filament area while hot and observe standard nitro fuel safety precautions.