"does that go for 88 300se ? on my oil pan driver side there is a sensor/sender and its leaking pretty bad .. new sensor/sender or most likely a o ring ?"

Yes, you can buy just the "o" ring(s) from dealer.
Best to drain oil first.

NOTE The oil pressure sender is part of the Battery [aka"B"] Harness for Starter and Oil Pressure Sender. Check condition of wiring, because it has same problem as main engine harness. If wire insulation is bad, it's easy to make new set.