This CORTECO crankshaft seal, part number 12011200B, is engineered to provide reliable sealing for your vehicle's differential. Crafted with durable materials, it is built to withstand the demanding conditions within the differential housing, ensuring long-lasting performance and preventing lubricant leaks. Proper sealing is crucial for the longevity and efficiency of your differential. This seal helps maintain optimal operating conditions by keeping lubricants in and contaminants out.