Combined exhaust manifold, heat exchanger and header tank that fits all versions of these engines. This is a high quality replacement part for marinised Perkins 4.236 (M90) engines.
Direct cooling of the cylinders and heads by sea water is unsatisfactory, because the engine – which was probably originally designed for radiator cooling – will run too cold and the sea water will eventually ruin the cylinder block and heads.
Heat exchanger cooling is the most common method, the sea water being isolated in components which can be designed to withstand its corrosive affect. The closed fresh-water circuit can be thermostatically controlled so that the engine operates at its designed temperature.
UK delivery is by next day courier. European and Worldwide shipping is also available.