Hi Sam, and thanks for getting in touch some years after putting in an initial complaint to head office. It seems that the only way i was able to stir any sort of response was to post my experiences freely over the web for all to view. It is quite upsetting that it has taken so long to have had a reply as i have left my contact details and the details of the 4WD company i work for with the "complaints department" of the NSW head office. Anyway moving along a few things i would like to clear up is that the air locker mentioned earlier in this thread was a genuine ARB air locker. It did have a hand engraved serial number etched into the carrier which is as useful as a date and time stamp on a tomato sauce bottle. It doesn't directly tell the model number or the part number and to Warren at ARB Penrith it appeared that he simply could not be bothered looking up the diff in old catalogues as the locker was manufactured something like 7 years earlier. I found this out through Warren at Moorebank as he did some digging and was able to use the professionally hand engraved serial number and measurements i had taken to work out which model this genuine ARB locker was and was able to tell me the year of production. To throw a further spanner in the works i have seen and fitted lockers sourced from both china and ARB Penrith and i believe maybe was Richmond (i cant remember wich store the customer purchased it from exactly as was a while ago) where on the carrier housing they all had serial numbers - uncanny i know for a product solely made in Aus. I would like to ask what inaccuracies exactly have i made in my post in relation to the air locker and further like to ask would you expect something like a hub seal to last the entire life of the vehicle? Neoprene seals (O-rings on the earlier models and figure of 8 style or squished double O-rings on the later models) that sit inside a housing and rub on a steel housing when ever the vehicle is in motion sounds like a wearing component to me. I do not believe that they are designed to last the life of the vehicle or are you suggesting that people only keep their beloved vehicles for a number of years before throwing them away, as to suit the life span your suggesting? To further clarify, the ARB air locker that forced the ugly side of ARB to show its head was one that was removed from the rear of a '97 model 80 series that was damaged in the front by a tree. The vehicle was written off and stripped for parts hence where the diff was sourced from. It was only due to a good eye and the meticulousness of the mechanic working on the job who decided to adjust the crownwheel to pinion backlash and at the same time to inspect the seals in question only to find that they had worn flat on the inner edge of the seals. The decision was made that to save having to remove the diff at a later stage to correct the air leak that would of been present due to the worn seals, we would replace them whilst the diff was out. This is where the headache began thanks to the professionalism of Warren at ARB Penrith. If there is any question about the quality of workmanship regarding the original fittment of the seals that failed then attention must be drawn back to ARB where the diff was originally fitted from new. After finally receiving the upgraded seals (from Moorebank) the air locker was assembled and is still working 70k later - so no poor assembly on our part. At the end of the day the Air locker is a tight little package and where it uses the compactness to sell as an advantage it is also one of its weaknesses. external actuation is bulky but no chance of pressurising the diff housing. The reason for this post is to point out that the ARB Air Locker is not all that and that ARB should recognise that and offer better support. Potential customers should also be made aware of the design limitations of all diff lockers not just ARB's and should make their mind up with the best knowledge of the lockers available not just because it is highly advertised. I agree that it takes 1 bad post to bring down the good in a product but how often do you hear about bad posts in other brands? Had there of been better customer support in the first instance then there wouldn't of been the creation of this thread. Food for thought. instead of going into damage control to re-promote the flawed product (flawed by its design limitations) how about offer ways to better deal with the flaws like oh i don't know kicking some ass of those who would rather sell a whole new product than to waste their time trying to support a working product that needs maintenance. maybe supply a few extra seals as spares in each kit since by reading these posts, i am certainly not the only customer with problems with the product. I may look like a small insignificant mechanic but i have quite a list of qualifications and work for a company who imports and exports 4WD spares globally, specialises in nothing but four wheel drives and has quite a big clientele all over the world. Yes all it takes is 1 bad experience but that experience has turned out to be enough to make a difference with our company and none of the staff have promoted a single ARB product as a result if anything turned away customers. I guess in answer to Warren some years ago - This is what i am going to do about it and will continue to until i see some changes in the corporation worthy enough to warrant the change in tone. Regards, Matt.