The OS No. 10 Glow Plug is a cold-type plug designed for high-performance nitro engines and hotter-running setups. Formerly known as the A5, this plug offers strong ignition stability at higher temperatures, making it ideal for powerful engines, higher nitro content fuels, and demanding conditions. It helps deliver crisp throttle response, consistent combustion, and reliable top-end performance.

Features

• Cold heat range glow plug for high-performance engines
• Former A5 model with updated designation
• Excellent stability at higher operating temperatures
• Supports strong throttle response and consistent power
• Ideal for hotter-running setups and higher nitro fuels

The No. 10 is trusted by modellers who want dependable ignition in more demanding or high-output engines. Its ability to stay stable under heat makes it a favourite for performance-focused setups.