Hello all,

I'm new to the forum, so please forgive me if what I'm about to ask has already been discussed...I did a search, however, and came up with nothing definitive.

I want to replace the A/C compressor on my '87 300D with a low cost used unit. It's a Denso 10P15C. I was in my local U-pull it junk yard yesterday and found 7 potential donor cars, but all had 10PA15C or 10PA17C compressors. The manifolds looked different on some of them, but I saw at least one of each with manifolds that looked the same as my 10P15C. I realize they have a different part number for a reason, but does anyone know, or better yet has anyone tried, to interchange any of these compressors? If it won't work, why not...what are the problems from a practical (fitment and use) point of view? Finally, am I correct in assuming the 10PA17C is a higher capacity unit?

Thank you in advance!

Willis