IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

Differential Replacement 2006 AWD IS250

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Old 10-23-15, 11:35 AM
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mb613
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Unhappy Differential Replacement 2006 AWD IS250

Need to change my rear differential on my 2006 AWD IS250. It slowly leaked and got loud when it ran dry, had the oil changed but sound still exists. Guess some interior damage was done. Anyone know if the ratio is it 3.9 or 4.10. Trying to look for a used one online but im not sure between the two. Any help appreciated, thanks .
Old 10-23-15, 12:15 PM
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Jeff Lange
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4.10:1, Needs to be from a 2006-2008 AWD.

2009+ has a different size differential, RWD is 3.91:1 for A/T and 3.73:1 for M/T.

Jeff
Old 11-05-15, 01:48 PM
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mb613
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Originally Posted by Jeff Lange
4.10:1, Needs to be from a 2006-2008 AWD.

2009+ has a different size differential, RWD is 3.91:1 for A/T and 3.73:1 for M/T.

Jeff


So my mechanic ordered a 4.10 differential (taken off a same year and model AWD) and my axle would not fit inside it properly.. so strange.
Old 11-05-15, 03:24 PM
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Jeff Lange
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I would double check that it was actually from the same year. All AWD IS250 models from the same year will have the same differentials.

06-08 and 09-13 are different, I've seen wreckers incorrectly list them as the same.

Jeff

Last edited by Jeff Lange; 11-05-15 at 03:51 PM.
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Old 06-21-17, 11:53 AM
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Nixcision
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Sorry to bring this back from the dead:

Just wanted to clarify:
All AWD IS250 axles are the same up front correct? There is no difference between years for the fronts?
Old 06-22-17, 10:40 AM
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Jeff Lange
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Fronts are the same for all years, only the rear changed in 2009.

Jeff
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Old 06-22-17, 10:25 PM
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Bkhectic
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Originally Posted by Jeff Lange
Fronts are the same for all years, only the rear changed in 2009.

Jeff
2012 is250 awd which oil for front and rear ?
Old 06-23-17, 08:06 AM
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Jeff Lange
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Originally Posted by Bkhectic
2012 is250 awd which oil for front and rear ?
Front: 80W-90 GL-5
Rear: 75W85 GL-5 (75W90 or 80W90 would also be appropriate)

Jeff
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