How to Replace a Rear Pinion Seal

Below guide will teach you How to Replace a Rear Pinion Seal . Please follow the instructions carefully.

Things You’ll Need:

  • Screwdriver
  • Drain Pan
  • Mallet Hammer
  • Scraper
  • Socket and Ratchet Set
  • Needle Nose Pliers
  • Flat Head Screwdriver
  • Gear Oil
  • Pinion Seal
  • Brake Cleaner

Estimated Costs:

  • DIY Costs: Est. $129.79 parts only
  • Shop Costs: Est. $328.79 parts and labor

Image may not be specific to your car


  • Secure the vehicle on a flat surface. This is essential while working with one end of the vehicle rose.
  • Lift the rear of the vehicle up using the floor jack.
  • Prop the vehicle on jack stands to ensure your safety.
  • Carefully, examine the rear differential assembly for any signs of leak.
  • Take the gear oil fill plug away.
  • Before disconnecting the U-joint from the pinion flange, mark the driveshaft rear U-joint and flange so that you can install them properly later.
  • Similarly, you need to mark the pinion flange, pinion shaft and retaining nut to avoid any confusion later when installing them. Unbolt the nut and take the washer out from the pinion shaft.
  • Put the drain pan under the pinion flange and take the flange out from the differential.
  • Remove the pinion seal with the help of screwdriver.
  • Clean the housing properly. There should be no grease or contaminants on the housing surface.
  • Position the new seal and lubricate it with oil.
  • Reconnect the pinion flange, washer and nut properly. Torque the nut following the specifications.
  • Reattach the driveshaft to the pinion flange and secure it with bolts.
  • Take recommended gear oil for your vehicle type and add it to differential housing.
  • Replace the gear oil fill plug.
  • Remove the jack stands and ground the vehicle.
  • Take a small drive and check the differential assembly and its surrounding areas for any signs of leak.

Further Reading

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