NOW offers Round Tube and Fin Oil Coolers! Northern round tube & fin (RTF) oil coolers are interchangeably used for cooling a variety of oils and fluids in a wide variety of truck, agricultural and industrial equipment applications.   Engine Driven Fan Shrouds Made for exact fit of Northern Aluminum High Performance Radiators with a 2 5/8” depth and a trim-able collar that will adjust for 15” – 20” fan diameters!

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