Product Description
Replacement oil cooler core for compatible Cummins NT855 diesel engines, including select Small Cam, Big Cam I, and Big Cam II configurations. Designed to transfer heat from engine oil to the cooling system, helping maintain proper oil temperatures during engine operation.
Features a cylindrical tube bundle measuring approximately 12-5/8 inches long and 5 inches in diameter. Designed to replace the existing oil cooler element while reusing the compatible original housing.
Cross-references Cummins part numbers 3021581 and 208149. Aftermarket equivalents include PAI 141420 and FP Diesel FP-3021581.
Product Dimensions:
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Length: 12.625 inches
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Diameter: 5 inches
Verify the original part number, cooler dimensions, housing configuration, and engine serial number before ordering. Gaskets and installation hardware are not included unless otherwise specified.
