Replace Seal on Differential or replace Differential?

[TFXCCOACH]

I am original owner of 2012 Genesis 3,8 with 119,000 miles. All routine recommended service has been done by the dealership. I noticed fluid on the garage floor in the rear area of the car and took it to dealer. The pinion seal is leaking where the drive shaft connects to the differential and the dealership gave me two options. Replace the seal for 800 or replace the differential for 2,500. They said the seal replacement may or may not make noise because of mileage. I would like to keep the car for a couple more years however I understand as the age of the car goes up the failure of parts also goes up. What are your recommendations or suggestions as any help would be appreciated.

 

[EdP]

I am original owner of 2012 Genesis 3,8 with 119,000 miles. All routine recommended service has been done by the dealership. I noticed fluid on the garage floor in the rear area of the car and took it to dealer. The pinion seal is leaking where the drive shaft connects to the differential and the dealership gave me two options. Replace the seal for 800 or replace the differential for 2,500. They said the seal replacement may or may not make noise because of mileage. I would like to keep the car for a couple more years however I understand as the age of the car goes up the failure of parts also goes up. What are your recommendations or suggestions as any help would be appreciated.

I'd get a quote from a good independent shop for the seal.

 

[homeofstone]

Get a salvage diff. We put over 220,000 miles on our Genesis and no diff. leaks or any other oil leaks. The rear diff did develop a lot of lash after 200,000 miles and that is one reason we traded it in.

 

[TFXCCOACH]

Thanks for taking the time to offer suggestions.

 

[Hero6]

+1 on getting another quote. $800 for a seal replacement sounds steep. I just looked at mine recently for another issue and it doesn't look like a tough job to do.
I would not replace the whole differential, just replace the seal and swap in some new differential fluid.

 

[Kraig Wilkinson]

Thanks for taking the time to offer suggestions.

+1 on getting another quote. $800 for a seal replacement sounds steep. I just looked at mine recently for another issue and it doesn't look like a tough job to do.
I would not replace the whole differential, just replace the seal and swap in some new differential fluid.

+1 on getting another quote. $800 for a seal replacement sounds steep. I just looked at mine recently for another issue and it doesn't look like a tough job to do.
I would not replace the whole differential, just replace the seal and swap in some new differential fluid.

I agree with hero6 just replace the seal and diff fluid and call it good!

 

[edizzle89]

+1 on getting another quote. $800 for a seal replacement sounds steep. I just looked at mine recently for another issue and it doesn't look like a tough job to do.
I would not replace the whole differential, just replace the seal and swap in some new differential fluid.

a pinion seal requires a complete disassembly of the differential, as the pinion gear itself as to be removed. that also means on reassembly pinion depth, backlash, bearing preload, etc all need to be adjusted correctly. it's a small, simple seal that requires a good amount of work unfortunately

 

[Kraig Wilkinson]

a pinion seal requires a complete disassembly of the differential, as the pinion gear itself as to be removed. that also means on reassembly pinion depth, backlash, bearing preload, etc all need to be adjusted correctly. it's a small, simple seal that requires a good amount of work unfortunately

Wow ! It is that in depth. Not as easy as remove yoke and remove seal reinstall seal, reinstall yoke?

 

[edizzle89]

Wow ! It is that in depth. Not as easy as remove yoke and remove seal reinstall seal, reinstall yoke?

it could potentially be done that way but there is a one time crush sleeve on there that helps preload the pinion bearings which may or may not provide enough preload after removing the yoke from the pinion, also at a minimum you'd have to reset pinion depth.

 

[donmarco]

Just had done at dealer for $522

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[Gunkk]

Not bad, given the labor involved. If done properly, then an excellent value for $$$.