O.S. Engine OS21165010 Thermo Insulator for 10J,10M,10D engines  [OS21165010]

Thermal insulator for RC engines

This thermo insulator is an RC-scale accessory intended to reduce unwanted heat transfer around engine contact areas on models using 10J, 10M, and 10D engine types. As a passive component it helps stabilise thermal conditions that can affect fuel mixture behavior and tuning consistency without altering engine internals.

Use this part where temperature isolation is desired between the engine and surrounding components; typical roles include dampening heat transfer to the chassis or adjacent fittings and helping maintain repeatable running conditions during testing or setup. The insulator functions as a thin thermal barrier and does not replace standard engine cooling or muffler components.

Installation considerations: verify fit against the exact engine layout before final assembly, ensure no interference with moving parts, and confirm exhaust and cooling clearances remain adequate. For tuning, expect smaller, incremental changes in engine response when effective heat transfer is reduced, so re-check needle settings after fitting.