Differences between various 200-4R Dip Sticks/Tubes
The following words and pictures are provided by Bob Koch. They should be helpful in determining what 200-4R you may be looking at.
Only real thing to note is that the factory seems to have altered the full level mid year 1989 and started under filling the units by about 1.5 pints. I assume (but don’t know) that the bean counters realized that by 89 these things were only being installed in land barges that can’t launch fast and have no risk of fluid slosh causing cavitation. I do not have a pic of the mid-89 and 90 reduced level Chevy stick and tube but I’m sure you can figure it out from the pics. Should have the same dipstick handle and part number as the BOP one pictured.
