Hi Ted,
When you say your send is leaking, do you mean it’s leaking at the base of the sender?–Where it screws into the engine?
If so you can change the seal (Lycoming p/n 5578426).
If the oil is coming out of the top of the sender–where the wires exit. You need a new sender.
The original sender is the same part number you quoted.
I “Googled” that part number and found a number of senders, both new and used for sale.
To the best of my knowledge, used parts vendors (reputable ones, as least) all have a reasonable return policy so you may be able to save a few $$ and still get a good sender.
Let me know where the oil is leaking, and if it’s the seal.
Thanks
Steve
