LC4 Long-Reach Plug Medium-Hot - O.S. Engine OS71653400  [OS71653400]

LC4 long-reach plug details

The O.S. Engine OS71653400 LC4 long-reach glow plug is made for model nitro engines where a longer threaded reach is required. The medium-hot heat index provides a balanced thermal range suitable for a variety of fuel mixes and operating conditions.

Installation on compatible engines follows standard practice: remove the old glow plug with the right wrench, ensure the thread seats correctly, and tighten to the engine maker's recommended feel to avoid damaging the head or threads. View this component as a consumable that can be changed during tuning to refine warm-up and throttle response.

Consider ambient temperature, fuel formulation, and recent engine behaviour such as difficult starting or rough idle when choosing an LC4 medium-hot plug. Changing heat ratings incrementally helps determine whether ignition temperature is the cause of running issues.