This CORTECO crankshaft seal, part number 12012930B, 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, maintaining its integrity and preventing lubricant leakage. Proper sealing is crucial for the longevity and performance of your differential. This component plays a vital role in keeping contaminants out and essential lubricants in, ensuring smooth operation and protecting against premature wear.