Welcome aboard Joel!! Tough part to find.
Can the old one be rebuilt maybe? If you have it.
Check with Daryl -
@Mountainman here on OTT.
Kubota Salvage Yard
www.mossycreekoutdoors.com
Mostly B & BX stuff but maybe he knows of other salvage yards that could help.
There's Newhall Tractor Service in California 209-712-4066.
Messick's has a part finder for discontinued parts. You fill out your information and they go looking.
Or you could have one built some place like
https://www.hydrauliccylindersinc.com/
Just an example, never used them or if their prices are reasonable.