This CORTECO crankshaft seal, part number 12012573B, is engineered to provide a reliable seal for your vehicle's differential. Crafted with durable materials, this seal is built to withstand the demanding conditions within the differential housing, including pressure and temperature fluctuations. Proper sealing is crucial for the longevity of your differential components. This seal helps prevent the loss of lubricating fluid and protects internal parts from external contaminants like dirt and moisture, ensuring smooth and efficient operation.