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D4 Front or Rear Differential ??
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richardch
 


Member Since: 27 Dec 2005
Location: Zurich
Posts: 458

Switzerland 2012 Discovery 4 3.0 SDV6 HSE Auto Chawton WhiteDiscovery 4
D4 Front or Rear Differential ??

So my 2012 D4 went in for the cambelts 2 days ago and the mechanic tells me that the constant humming is one of the differentials, seems it is usually the front which goes?, but how can I tell front or rear without going to the lengths of checking the magnets?

Is there a full replacement aftermarket kit available for both front and rear?
  
Post #229678122nd Jun 2022 11:56 am
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Sandyh
 


Member Since: 23 Apr 2018
Location: Sheffield
Posts: 37

United Kingdom 

Interestingly I'm in the same situation.
My D4 went in for yet more work and I asked them to check the front wheel bearings as I thought one was on the way out. They came back and said its the front diff.
In their experience they said they have only ever replaced rear diffs, never a front one.
I've had a price of £1,400 ish for a new diff and installing. Putting that on hold for now.

The only thing I'm not sure about is if the worst came to the worst can the D4 drive with a propshaft removed?

It was a clear rumbling noise from the front, but got louder when the LH wheel was loaded on corners.

Sorry, not much help for you.

Sandy.
  
Post #229696523rd Jun 2022 3:05 pm
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richardch
 


Member Since: 27 Dec 2005
Location: Zurich
Posts: 458

Switzerland 2012 Discovery 4 3.0 SDV6 HSE Auto Chawton WhiteDiscovery 4

thks Sandy, after a bit of research it seems that it is usually the front diff, which contrasts with your garage's experience. You cant even buy a replacement for the 2012 D4 TDV6 8 speed LR 055520 so it looks like I am going to shoot for DA5039 the bearing refurb kit https://www.autoexpress.co.uk/land-rover/d...fferential
  
Post #229696823rd Jun 2022 3:19 pm
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richardch
 


Member Since: 27 Dec 2005
Location: Zurich
Posts: 458

Switzerland 2012 Discovery 4 3.0 SDV6 HSE Auto Chawton WhiteDiscovery 4

so in the end it was thankfully the RHS front wheel bearing, strange as it wasnt detectable at the rigorous Swiss MOT nor on a lift. The car is sooooo much smoother now
  
Post #229939210th Jul 2022 2:40 pm
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