Don't buy the replacement vave.
Instead, find a local business that sells "O" rings.
Take the valve with you and have it disassembled.
Save the "trashed", "O" rings for measurement purposes.
Purchase the "O" rings and have fun.

I replaced all four "O" rings for 95 cents. The dealer
wanted $ 150.00 for a new control valve.

Hope this helps.
Ron Rueb
OKC/OK
71, 220 D, 81 300SD