AT406231 Air to Air Cooler Fits John Deere 318D 320D 323D 326D 328D 332D 333DOne New Aftermarket Replacement Air to Air Cooler (Charge Air Cooler) Fits John Deere Skid Steer Loaders This aftermarket replacement air to air cooler also known as a charge air cooler or intercooler mounts between the turbocharger and the engine intake manifold on Fits John Deere (Fits JD) D Series skid steer loaders. By cooling compressed intake air before it enters the engine, this cooler helps maintain power output and protects the engine from