Discovery 300tdi ac compressor option

terryjm1

Well-known member
As I was doing research on getting a replacement ac compressor for my D1 300tdi, I learned a lot about Nippondenso ac compressors. In a nutshell, the 10PA17C it uses is very common. There are basic differences such as a few different mounting point options, manifolds, and different pulleys. However they are alll very similar. Here is the one I found closest to the original: DENSO Auto Parts A/C Compressor 471-1349. It has the correct mounting points and manifold. The pulley is a 4 groove but I cant say for certain it is back far enough.

It is listed for a 94-96 Jaguar XJ12 6.0L-V12. However, I found a new one for a mid 90s BMW 3 series on eBay, Denso number 471-1114 for $90 shipped. I had to use the manifold and pulley from my old compressor but everything else was a match, even the clutch parts (except the pulley). Well, I did splice the connector plug. I also pressed out the new bearing from the BMW pulley and installed it in the old pulley. It was an extremely easy job even with the extra swapping around.

I would have had the whole job done Saturday afternoon if I had not forgotten I left the new belt at our other place (too far to go retrieve) and if I had known the Freon cans as of May last year have a smaller threaded port than my old piercing valve fits. Why would they change that? It would have been done today if any parts store in town had the belt.
 
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