Thermo Insulator GF40 Sheet for R/C Engines - O.S. Engine OS49469450  [OS49469450]

Engine heat management sheet

The O.S. Engine OS49469450 Thermo Insulator GF40 is a thermal insulation sheet made for R/C engine accessories and workshop use. Placed between heat sources and nearby components, it reduces direct heat transfer to help keep temperatures more consistent during running and storage.

Offered as a thin, lightweight sheet, the GF40 can be trimmed to suit areas around cylinder heads, muffler fittings, or intake surrounds without creating bulk. Its contribution is stability rather than outright power changes: by limiting heat soak, it makes temperature-based tuning more predictable.

Installation is straightforward on standard R/C engine arrangements: cut the material to the desired shape, secure it with clamps or non-permanent adhesive where appropriate, and avoid covering vents or exhausts. Check for oil contamination or compression that may impair thermal performance and replace when necessary.

The product is broadly compatible with R/C engine accessories rather than specific model chassis, so confirm clearance and fit visually before committing to permanent attachment. Use only on model engines and related parts.