As folks mentioned, the parts are expensive and based on my experience I would have gone a different route. Please note, after I got the parts and called the supplier they told me the fit was not good between the large hinge pin and door handle. There is a lot of slop, probably 1/16 inch.
Airstream door handle - the two pre-drilled holes are not on the same plane/axis!! Making it difficult to drill the large hinge pin correctly.
The large hinge pin with lever on the end (goes through the door handle and pushes on the roll pin in the door strike) is not pre-drilled. related to the poor fit above and difficulty drilling holes to line up with the handle.
The aftermarket lock works, but is a poor fit (loose).
I might have had better results if I sent it to the place I bought the parts, but they told me up front the door handle wouldn't be flush and it would cost $90.
My neighbor (NASA machinist) was kind enough to put measure and drill the hinge pin for me, but it was a difficult task. In the end, our efforts to make sure the door handle was flush when closed got us about 1/16 inch off and now the door lock and inside lever lock will not work.
Think twice if you plan on replacing the door handle/hinge pin combination!
I'd do the replacement kit from InlandRV and it would have only cost me another $55.
Please note, someone buy my AIrstream (in classifieds) - reasonably priced!!