O.S. Engine OS71641500 Turbo Glow Plug P5 Hot — glow plug for R/C nitro engines  [OS71641500]

Turbo P5 Hot overview

This turbo-design glow plug P5 HOT is an R/C-scale engine ignition component intended for nitro model engines. The P5 designation indicates a hotter heat-range filament compared with lower-numbered plugs, which affects ignition timing characteristics at the combustion chamber level on small model engines.

Functionally it helps with cold starting and maintaining a steady idle in engines that respond better to a higher-heat element. In tuning practice, choosing a hotter or cooler plug is one method to fine-tune combustion behavior alongside needle and carburetion adjustments; the plug itself does not change fuel or air flow but alters the filament's thermal response.

Installation notes: fit only to compatible R/C nitro engine threads, use the correct glow-plug wrench and avoid over-torquing to prevent thread damage, seat the plug evenly and ensure no foreign debris is present in the combustion chamber. After installation, verify starting behavior and idle before any further needle adjustments.

Safety and handling: this product is for model use only, handle the filament area carefully when hot, allow the engine to cool before touching the plug, and follow general model fuel safety practices.