I found the same pic. It looks like I just need new o-rings and the clamp (176 in the drawing. I stopped by Harbor Freight and bought a box of similar metal clamps with rubber liners for ~ $8.

I had gone to HF for other stuff so didn't measure the line but will do a trial fit tomorrow. There are other uses for the clamps. I'll buy OE in case the HF clamps don't Fit. Will report back.

I need to research the block heater. Mine has the plug cut off and now is the time to test &/or replace it. DieselGiant says replacing can be problematic and sells one that installs in the radiator hose.I don't know if that is necessary or a good rig or not.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.