The OM 616 & 617 water pumps are often 'fun' too ~
I wish I'da known about that OM606 up grade fan blade when we replaced the head on brothers '87 300SDL, the pump and other little tings were all lifed out and I tried to up date as we went along .

Agreed, the W126 Diesels are so much quieter than the older W123's are .

I'd love to stuff an OM603 into my old Chevy C/10 shop truck .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better