At Aircraft Accessories of Oklahoma, we offer the following Aircraft Oil Cooler services and parts:

  • Overhaul Exchange
  • New Exchange

What is an Aircraft Oil Cooler?

An aircraft oil cooler helps keep the aircraft oil temperature from spiking while the engine runs. If the temperature begins to rise, the oil will be channeled through a heat exchanger which uses either air or fuel to lower the oil temperature. Once the oil temperature is decreased to a safe level, it flows back into the system.

The flow of oil is controlled by a thermostatic valve. The valve will remain closed, continuing to reroute the oil back through the system, unless the triggering temperature is reached. Once the oil heats up, the valve opens, channeling the oil through a series of tubes that bring it into contact with the fuel or air.

Oil cooling is vital to the system to greatly enhance the aircraft’s performance. But often this key piece of equipment is overlooked until a major problem, like a crack or leak, arises. Over time, oil sludge and carbon can build up, reducing the efficiency of your aircraft oil cooler. If you’ve noticed that your oil cooler doesn’t work as well as it used to, it might be time to have it inspected.


Aircraft Accessories of Oklahoma handles Aircraft Oil Coolers from the following manufacturers:

  • Harrison
  • Stewart Warner
  • Niagara PMA Replacement Oil Coolers


Wondering what to expect when you trust Aircraft Accessories with your next aircraft oil cooler project? Our talented team of oil cooler specialists will gladly provide you with a custom quote on request. For general questions, or to request a free quote, call or message us today.

Have Additional Questions on the Aircraft Oil Cooler Exchange Process?

Give us a call or email today – our experienced team is ready to go above and beyond to get you back in the air sooner.
Alan Brothers – Purchasing Manager & Oil Cooler Expert