This is a copy of the original oil cooler alignment tool for the early 3-piece style OPRV, necessary for aligning the oil cooler when reinstalling on Porsche 944 models.
I printed many variations of these before I got one that fits on the housing and the block sleeve perfectly. I suggest first printing a 2x2x2cm calibration cube and using that to calibrate your printer settings so it is dimensionally exact.
Based on this design by Arthurios, but it took a bit of tweaking to get right.
https://www.thingiverse.com/thing:4741763
9215 3 Piece OPRV Alignment tool
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Tom
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Awesome, thanks for posting! 
Were you able to get a micrometer on the final version? Might be helpful to future users if they knew the exact size they were shooting for. Also, see my version of the later one-piece tool for a useful trick to eliminate any z-seam and/or random seam blobs. It makes for a very uniform outside diameter...
https://www.carpokes.com/viewtopic.php?p=53060#p53060
Were you able to get a micrometer on the final version? Might be helpful to future users if they knew the exact size they were shooting for. Also, see my version of the later one-piece tool for a useful trick to eliminate any z-seam and/or random seam blobs. It makes for a very uniform outside diameter...https://www.carpokes.com/viewtopic.php?p=53060#p53060
Hi Tom!
Yes I saw your version, made me wish I had a later model so I could've just used yours!
Clever trick with the seam, I've just been using random and carefully sanding it down.
Don't have a micrometer to hand, but I'll see if I can get one!
Yes I saw your version, made me wish I had a later model so I could've just used yours!
Clever trick with the seam, I've just been using random and carefully sanding it down.
Don't have a micrometer to hand, but I'll see if I can get one!
1987 Porsche 944 NA - Alicante, Spain