What is a Differential Cover? A differential cover(https://a-premium.com/differential-cover) is a protective casing that seals and protects the internal components of a vehicle’s differential. It plays a crucial role in maintaining the performance and longevity of the differential by keeping lubricants contained and preventing debris from entering. Functions of a Differential Cover Protects Internal Components: Shields gears, bearings, and shafts from dirt, debris, and impact damage....