86560SEL, The OVP isn't model-specific, but there have been several versions of it (5-pole, 7-pole, 9-pole) and the earlier ones and the later ones (approx. 1988+) have different part numbers. Early 80s 126 V8s (thru MY '87) have OVPs that should work; not sure that W116 even had an OVP. S-class experts will know for sure and can correct me on that. Why do you think that you need an OVP?

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1988 California version 260E (W124)
Anthracite Grey/Palomino
Owned since new and still going strong and smooth
MBCA member

Past Mercedes-Benz:
1986 190E Baby Benz
1967 230 Inherited from mom when she downsized
1959 220S Introduced me to the joys of keepin' 'em goin'

There are only 10 kinds of people in the world--those who understand binary and those who don't