The OS No. 7 Glow Plug is a versatile medium-hot plug designed to deliver smooth, reliable performance in a wide range of nitro engines. Its balanced heat range provides easy starting, clean idling, and consistent throttle response, making it ideal for everyday flying, bashing, and general sport use. Whether you’re tuning for cooler conditions or looking for a bit more responsiveness, the No. 7 offers dependable ignition stability and long-lasting durability.

Features

• Medium-hot heat range for broad compatibility
• Offers smooth starts, stable idle, and responsive performance
• Suitable for many aircraft and car nitro engines
• Helps maintain clean, consistent combustion
• Reliable OS construction for long service life

Modellers appreciate the No. 7 for its easy tuning and dependable behaviour across various conditions. It’s a trusted all-round glow plug for keeping sport nitro engines running their best.