Part number 4621171 (or 462-1171) is a genuine Caterpillar (Cat) Standard Efficiency Engine Oil Filter. It is a spin-on lube filter designed for normal-duty filtration across a massive array of heavy-duty Caterpillar machinery, including excavators, wheel loaders, backhoes, tractors, generators, and industrial/marine engines (such as the Cat C4.4, C6.6, and C7.1 series). [1, 2]