The OS No. 6 Glow Plug is a hot-type plug designed for easy starting, smooth idling, and reliable performance in a wide range of sport nitro engines. Formerly known as the A3, this updated version offers excellent ignition stability at lower temperatures, making it ideal for cooler weather, lower nitro fuels, and engines that benefit from a hotter plug. It helps improve throttle response and keeps engines running clean and consistent during everyday use.

Features

• Hot heat range plug for improved low-temperature ignition
• Updated version of the former A3 plug
• Enhances starting, idling, and overall engine stability
• Ideal for general-purpose nitro aircraft and car engines
• Trusted OS quality for dependable long-term performance

The No. 6 is widely used for its easy starting characteristics and smooth, reliable running. It’s a go-to glow plug for sport modellers who want consistent performance in varying conditions.