Been a problem for a couple of years as gas leaks out slowly & normally just charge up with more gas. Have been doing it at B Quik in Phuket & last time they checked to see what the actual problem is. They said the air box was leaking & would not only need to replace that but a whole host of other parts with total cost of 12,000. Are they trying it on or is it absolutely necessary to replace all the other bits & pieces as well i.e. cannot just replace air box alone

You could get another quote from a designated A/C shop. 

What ride is it..?

19 minutes ago, transam said:

You could get another quote from a designated A/C shop. 

What ride is it..?

Plan on doing that. Isuzu D Max

Find a tig welder.