Is an ARB Air Locker best in the front diff. or rear diff ???

being a LC I would put it in the rear.

Front or rear is really a personal choice, many will argue either way. I think 4wdAction did an article on it a while back and found that it depends a bit on what 4x4 you have. (read: does it have LSD and does it actually work)

That looks like a 60 series in your Pic....even if it has LSD in the rear, it would be no better than an open diff, damn useless tojo LSD's :-( (I drive an 80 series, same problem).

My thinking then is to start by getting traction in the rear first, then move on to the front. Locker activated in the front will make it less inclined to steer where you want it to, especially in mud.

If I drove a Patrol, I'd maybe consider putting the locker up front as their LSD rear actually works! The ideal setup will always be front AND rear though.

Cheers
NUTS!

I have air lockers front and rear in my 100 series.

If your only going for one locker, in a LC, put it in the rear and get rid of that usless LSD.
I have only ever had to use my rear locker in anger to get me out of trouble and steering was available. Once the front is locked in, loss of any meaningful steering occures and it's straight forward or reverse.

Evan

I am a front Diff Lock advocate.

I had an ARB Air Locker in front of my Land Cruiser - worth all its $

I now have a Lokka in my Rodeo up front, but they do have a very good LSD.

For the price you could consider Lokka in both front and rear of your rig. Treat them right and you should have no issues.

Cheers

It essentially depends on weight distribution and axle articulation aussiedingo.

So for most cars its the front that is better with a locker.

We went thru the exercise and measured and filmed results on calibrated tracks and it was much better on the front axle in Nissan Patrols which have a slight front wheel weight bias.

The advantage remained but lessened when we added a spot load of 300kg extra over the rear axle.