Water Jacket Sleeve for RC Engines Zenoah K577901901 G290PUM  [K577901901]

Engine coolant sleeve for Zenoah K577901901

This Zenoah K577901901 G290PUM water cooling jacket is an accessory for RC-scale engines that directs coolant along the exterior of the engine to help control temperature while the model runs. It is intended as part of a cooling assembly and not as a standalone cooler.

The jacket supplies a continuous passage for coolant so tubing and a pump can be connected to form a closed circuit around the engine. In practice this helps maintain steadier operating temperatures during prolonged sessions and makes it easier to trial different cooling configurations.

To install, place the jacket around the engine barrel, connect flexible coolant lines to the inlet and outlet fittings, and secure the jacket using the engine's existing fasteners where applicable. Common hobby tools are usually all that are needed, but always verify clearances and fit before final assembly to avoid contact with mount points or nearby parts.

Maintenance involves periodic inspection of hoses and connectors, tightening fittings as required, and flushing the loop if you detect deposits or lower flow. As always, ensure compatibility with your engine and auxiliary cooling equipment before buying and fitting.