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

Engine thermal barrier for RC setups

This thermo insulator is an accessory designed to reduce heat transfer around engine contact areas on models using 10J, 10M, and 10D engine types. As a passive item it helps stabilise temperatures that can influence fuel mixture behavior and tuning consistency without modifying internal engine components.

Fit it where thermal isolation is desired between the engine and adjacent parts; common uses include limiting heat flow to the chassis or nearby fittings and supporting repeatable running during testing or tuning. The insulator acts as a thin thermal barrier and does not replace standard cooling hardware or the muffler.

Installation notes: check the exact engine layout for clearance before final assembly, avoid interference with moving parts, and maintain adequate exhaust and cooling gaps. After fitting, expect modest tuning adjustments as thermal transfer changes and re-check needle settings for consistent results.