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Anybody know what the difference is between the Gen 1 V8 rear locking diff 0AC-525-016M and the Gen 2 V8 rear locking diff 0AB-525-018M? I'm wondering if the Gen 1 part could be used in a Gen 2 Treg.
 

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Most likely they changed the final drive ratios. I would strongly suggest you use the correct part number for you vehicle. Even if the ratio was off by .04, you may not notice it while driving yet be causing serious damage to your centre diff.
 

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Anybody know what the difference is between the Gen 1 V8 rear locking diff 0AC-525-016M and the Gen 2 V8 rear locking diff 0AB-525-018M? I'm wondering if the Gen 1 part could be used in a Gen 2 Treg.
Gen1 Touareg and the facelift version of it (you guys in North America call it Gen2) are from the same platform. As I mentioned also earlier, a 2004 V8 petrol, a 2008 V6 petrol, and a 2008 V8 petrol has the same rear diff.

The main difference between diffs is the amount of torque they can withstand. TDI models deliver more torque than the petrol models and therefore, require different diffs. This can also be resulted in a different gear ratio.

Hence, V8 petrol, V5TDI, V6TDI, V10TDI, and W12 petrol Touaregs, each has a different diff specification.
 

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Gen1 Touareg and the facelift version of it (you guys in North America call it Gen2) are from the same platform. As I mentioned also earlier, a 2004 V8 petrol, a 2008 V6 petrol, and a 2008 V8 petrol has the same rear diff.

The main difference between diffs is the amount of torque they can withstand. TDI models deliver more torque than the petrol models and therefore, require different diffs. This can also be resulted in a different gear ratio.

Hence, V8 petrol, V5TDI, V6TDI, V10TDI, and W12 petrol Touaregs, each has a different diff specification.
There must be some difference as pn 0AC-525-016M is listed for 2004 to 2007 4.2L V8 Gas and pn 0AB-525-018M is listed for the 2008-2009 4.2L V8 Gas.
 

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How could that be a locking differential? No provision in the case for the motor/solenoid that locks the differential.
I haven’t looked up the part # but maybe that’s a limited slip differential and the sellers description is incorrect?
 

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How could that be a locking differential? No provision in the case for the motor/solenoid that locks the differential.
I haven’t looked up the part # but maybe that’s a limited slip differential and the sellers description is incorrect?
Apparently they show a photo of a non-locker, but they confirmed in an email that it is a locking differential that they are offering.

Their message was :

"Sorry, totally missed this - from what we could see they are very similar. This is for part number 0AC525016M. The pics are 0AC525015L because we haven't had a chance to update the pictures yet. Regardless you would receive 0AC525016M if you ordered this. Thanks! "
 

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Let me know if you’re serious about doing this. I have everything out of a V8 car to do the conversion. Including the entire body wiring harness.
I know this is an old thread but wanted to know if you still had these parts available?
I only have the diff and need the rest.
 

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I don’t think you can pm with your post count. It’s $700 for the conversion. Entire car harness, module, dash switch, rear with locker motor and the correct axles. not interested in splitting it up. Just buy it all and sell whatever you don’t need. The parts are off a low mileage V8.
 

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Just to add a little bit of info to this, I received my DIY rear locker kit earlier this week. It differs very slightly from the description earlier in the thread.
One of my live wires ( fuse 23 ) is Red / Grey not Red / White and I have no fittings in the fuse box for fuse 47. Fortunately kit came with almost a full harness so I will pinch a bit for the fuse.
One thing I find quite surprising is that the switch must work the rear diff through the center diff ECU as there is no direct wiring.
237845
 

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Just to add a little bit of info to this, I received my DIY rear locker kit earlier this week. It differs very slightly from the description earlier in the thread.
One of my live wires ( fuse 23 ) is Red / Grey not Red / White and I have no fittings in the fuse box for fuse 47. Fortunately kit came with almost a full harness so I will pinch a bit for the fuse.
One thing I find quite surprising is that the switch must work the rear diff through the center diff ECU as there is no direct wiring. View attachment 237845
[/QUOTE
Where did you get the kit?
 

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Where did you get the kit?
On ebay, fairly local to me. It is the third locking diff I have bought from the site, but the only one that has the wiring and control box. I did buy a box before, but the courier lost it! Most breakers I have contacted dont seem to bother with the wiring.
 
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