The differential cover gasket is vital because it seals fluid inside the differential to lubricate the ring and pinion gears to minimize friction.
Differential cover gasket functionThe differential cover gasket is essential to keep the fluids trapped in the differential. A differential cover gasket can be susceptible to leaking which can cause the rear end to make noises. That is why it is vital to have the differential cover gasket in good working order or else the ring and pinion gears won't receive the proper lubrication.
Common problems with a faulty differential cover gasketA faulty differential cover gasket can lead to oil leaking, low fluid level, and damage to the differential.