Engine Oil Coolers are heat exchangers, and are GM-recommended replacements for your vehicle’s original components. These heat exchangers transfer heat to and from your vehicle’s engine oil to the engine coolant or ambient air. This helps keep the engine oil temperature within the designed operating range, which helps optimize engine efficiency and longevity. These original equipment engine oil coolers have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.