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from a solid block of aluminum, these cover plates feature heat sinks that help reduce oil temperature within the geared hub, extending the life of the oil and bearings. This easy upgrade provides a huge advantage when under heavy loads, towing, or high-performance applications.\u003cbr data-mce-fragment=\"1\"\u003eThe PPE Heavy-Duty Billet Aluminum Geared Hub Covers also feature a high-powered Neodymium magnet-equipped service plug that helps to attract and hold harmful ferrous metal contaminants.\u003cbr data-mce-fragment=\"1\"\u003e"}