This CORTECO crankshaft seal, part number 12013479B, is engineered to provide reliable sealing for your vehicle's differential. Crafted with durable materials, this seal is built to withstand the demanding conditions within the differential housing, including exposure to oil and varying temperatures. Proper sealing is crucial for the longevity and efficiency of your differential. This component helps prevent lubricant leaks, which can lead to premature wear and potential damage to internal components. By maintaining the correct lubricant levels, it ensures smooth operation and protects against contamination. Installation of this seal is recommended to maintain the integrity of your differential system. It is designed to meet or exceed original equipment specifications, offering a dependable solution for replacement or repair.