How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask sprinkles08 Your Own Question
sprinkles08, ASE Certified Technician
Category: Jeep
Satisfied Customers: 23004
Experience:  Chrysler/Dodge/Jeep Master Certified, ASE Master and Advanced Certified, Trans and Hybrid Specialist
Type Your Jeep Question Here...
sprinkles08 is online now
A new question is answered every 9 seconds

what is a front pinion seal? where is it located and what does

This answer was rated:

what is a front pinion seal? where is it located and what does it do? I have a 00 jeep grand cherokee larado.

Hello and welcome to JustAnswer!


A pinion gear is the gear in the differential that is basically mounted to the driveshaft. It engages with the ring gear in the differential, and that is what transmits power to the wheels. The pinion gear comes though the housing of the differential, and the pinion yoke mounts to it, the yoke is what bolts to the driveshaft. Where the gear comes through the case there is a seal to keep the differential fluid in. It's not uncommon for these to leak on the Dana axles in the Jeeps. The front pinion seal is the pinion seal on the front differential in your Jeep.

Customer: replied 8 years ago.
How much does this cost to get fixed at a dealer? Is it unsafe,how long can I go without getting it fixed. I just had a water pump and thermostat put in for $650.00.I am kind of short on money right now....thanks.

I fully understand being short on money! It's hard to say how long you could go without fixing it. It depends on how bad it's leaking. If it's just seeping a little, you're ok. If it's leaking badly you could run out of fluid, resulting in complete failure of the differential, that would be well over $1000 to repair. Take a look at it and see how wet it is. If you see actual drips it would be more urgent. I would recommend keeping an eye on the fluid level in the meantime to make sure it doesn't go low.


The price of the seal looks to be about $15 and it would be about 1 hour of labor to replace it. You may also have to pay for a quart of fluid to top it back off after the seal is replaced, which wouldn't be much.


sprinkles08 and 4 other Jeep Specialists are ready to help you