What is a fair price to get a Cat injector changed?

Depends on what sort of truck its in but I think 3 hours labour plus parts would be pretty reasonable but it depends on how bad it was leaking, if it was filling the crank case in 5 mins it should take no time to find but if it was taking a week to go 2 inches up the stick then it would take a lot longer to diagnose. I had one that had pushed an o-ring out and was leaking so bad I could push the priming pump in and hear the diesel squirting out under the tappet cover, that made things a lot faster as I knew exactly which tappet cover to pull off and went straight to the right injector, that took maybe 1.5 hours max but that is the exception rather than the rule, its was on the side of the road after hours, you always work faster when you want to get home!

 

but it also depends if the bottom end bearings need replacing, if thats the case it will be a whole day easy!

 

had exact same problem year ago mine was 850-900 out th door

 

Just 2 weeks ago $960 For a 05 MXS acert, 1 injector

 

WOW!!!
I would just like to thank you for reminding me just how much I love my old truck...LOL

For the price of that one injector I can get all 6 done on mine!

 

Thats way too much time, 1 hour to find the leak is ok but it should only take 1.5 hours to change the injector including R&R jake. I was also including 0.5 hour to change the oil and filter when I said about 3 hours.

 

Not to defend dealers, but you mentioned your truck is a KW. Does it have the air cleaner over the center of the engine? I have fought with those for over a hour before due to seized bolts. All trucks are different and no two come apart the same. Especially if one is 2 years old compared to 8 or 9!