Outer Limits 4x4 Board

i picked up a diff centre today out of a 02 gu patrol fitted with an airlocker jus worndering if someone could help me indentify the brand of locker as it has no brand name or colours etc on it and wondering if it will fit in my 89 tb42 gq patrol

any help would be much appreciated
cheers

That's a tuff one mate; however, the best way to see if it'll fit your 89 is chkn if the axles fit on the locker, for that you will need to take one out and take a look see.
Is it electrical, mechanical or neumatic locker? For GU, if neumatic, I only know of ARB, which is all we get here in PTY, also think they are the only air lockers made.

the only thing that has changed over the years is that some GUs now have 3.9s where the old had 4.1s... thats about it. axles are the same spline and everything else just bolts straight in.

if it has a small ally block with an air line to it, its a tjm prolocker.

If the airline goes to the bearing end of the carrier its an arb airlocker.

Both will fit a gq.

cool thanks for the help much appreciated. it has a airline running to the bearing carrier side so im guessing its arb

also ive heard a rumour that rb30 patrols run 4.3 ratio diffs is this true?