just had OEM suspension fitted to my MUX by ARB, speaking to the guys at ARB they assured me that everything they sell and fit does not affect warranty including the suspension they just fitted to my MUX, he said that If you break somthing on your vehicle and isuzu claim its directly a result of the After market ARB parts/ accesories then get them to put it in writing and fowaerd it to ARB and they will have to take care of it.
Sorry voids the ARB's blokes were pulling ya leg , just telling you what they thought you wanted to hear .
Anything that has not got a genuine Isuzu sticker/part number will effect the OEM warranty , even if you buy it from and have the dealer fit it .
They will point the finger at the accessory if they possibly can , even if you and everyone else knows it's BS ,
The owner is then between a rock and a hard place, IUA saying not our problem and we don't have to prove it we just need to say so , and the aftermarket mob saying the same .
I have seen it happen time and time again , just take a look at the cracked guard problem , IUA blame aftermarket Bull Bars , Suspension even though completely stock Isuzu's have had the same issue .
My local Isuzu Dealer has a heap of ARB gear in the showroom, they are very happy to sell and fit it for you but when asked about it effecting warranty the answer is yes it does .