COOLER AIRE ADMISION 24159274

Function and technical context

The intake air cooler acts as a heat exchanger between the turbocharger and the engine intake manifold, reducing the temperature of the supercharged air before it enters the cylinders. Cooling the compressed air increases its density and therefore the amount of oxygen available for combustion, resulting in greater effective power and lower fuel consumption in Volvo Penta's D16 and TWD series high-displacement marine diesel engines. This component works within the air intake circuit, in close coordination with the turbocharger and the seawater or freshwater cooling system depending on the engine configuration. If the intercooler loses efficiency or suffers an internal leak, the engine receives hotter and less dense air, which causes loss of power, increased exhaust gas temperature, increased consumption and, in serious cases, damage to pistons and cylinder head due to premature detonation or overtemperature.

When to replace this part?

The most common symptoms of a damaged intake air cooler are: noticeable loss of power at full load, excessive black smoke from the exhaust, persistently high exhaust gas temperature and, in the case of internal leaks, the presence of coolant in the intake manifold or in the engine oil. In heavy-duty marine engines such as the Volvo Penta D16C and TWD series, it is recommended to inspect the intercooler during each seasonal maintenance, checking the tightness of the air and coolant circuits, and clean the internal passages to avoid blockages due to salt or oil deposits. Replacing the air cooler preventively at the first signs of degradation prevents serious breakdowns at sea and significantly reduces the total repair cost.

Compatible Volvo Engines

Engine Compatibility

Equivalent manufacturer part numbers