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What Is a Charge Air Cooler in a Diesel Engine?

A charge air cooler cools compressed intake air in a turbocharged engine. It is an intercooler component, unrelated to portable evaporative room coolers.

A charge air cooler is an engine component that removes heat from compressed intake air before it enters the engine. The phrase “charge air cooler” is distinct from a household air cooler, despite the shared words.

What Is a Charge Air Cooler in a Diesel Engine?

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Choosing a Charge Air Cooler Tester Kit for Your…

Common questions

Questions before you buy

What does a charge air cooler do in a diesel engine?

It cools air compressed by the turbocharger before that air enters the engine. It is part of the intercooler system.

Is a charge air cooler the same as an air conditioner?

No. It is part of an engine intake system and does not cool a passenger cabin.

How do I find a charge air cooler temperature sensor?

Use vehicle-specific service documentation and correct engine and model-year information. Sensor location varies by vehicle and system design.

What should I confirm before buying a diesel charge air cooler?

Match the application and part number, connections, mounting points and any sensor ports. Ask a qualified technician to assess fitment and installation.