This CORTECO crankshaft seal, part number 12011373B, is engineered to provide reliable sealing for differential systems. Its robust construction is designed to withstand the demanding conditions found in automotive differentials, ensuring long-lasting performance. The primary function of this seal is to prevent the leakage of lubricating fluids from the differential while also keeping contaminants out. Proper sealing is crucial for the longevity and efficient operation of the differential assembly, protecting vital components from wear and damage. Crafted with precision, the 12011373B seal meets stringent quality standards. It is an essential component for maintaining the integrity of your vehicle's drivetrain, offering peace of mind and consistent operation.