The OS F Type (4 Stroke) Glow Plug is without a doubt the de-facto standard glow plug for four-stroke engines. Widely regarded as one of the best 4-stroke glow plugs available, it delivers easier starting, smoother running, and improved low-RPM performance.

Tested extensively across a wide range of engines, the OS F glow plug performs brilliantly in OS, YS, Moki (including inverted installations) and many other four-stroke engines. Although it costs a little more than standard plugs, it is definitely worth the extra £ for the improved reliability and running characteristics.

Key Features

• Designed specifically for 4-stroke glow engines

• Excellent ignition reliability

• Easier starting, even in inverted installations

• Smooth idle and improved low-RPM running

• Proven performance across multiple engine brands

Perfect For

• All 4-stroke glow engines

• Inverted engine installations

• OS, YS, Moki and other 4-stroke engines

• Pilots seeking easier starting and smoother running

Product Summary

The OS F Type Glow Plug is the industry benchmark for four-stroke engines. Trusted worldwide, it removes much of the frustration from starting and tuning, offering consistent ignition and improved performance across the rev range.

Specifications

• Brand: OS Engines

• Model: F Type

• Engine Type: 4-Stroke Glow

• Application: Standard and inverted installations

• Thread: Standard glow plug thread

Why Buy from Probuild Aircraft

• ✅ Official UK OS Engines stockist

• ✅ 100% genuine products

• ✅ Trusted by top international pilots

• ✅ Fast UK shipping

• ✅ Supplying pilots since 1993