If you have the number written in black sharpie off the back of the keypad, you can search online and generally find them. The rams can usually be rebuilt by hydraulic shops, but most tech's don't like that as there's no warranty from HWH. Are you doing the work yourself or is a shop doing it?
HWH is way behind on work due to the pandemic and increased demand. My coach was in the shop waiting over 3 months on parts last winter.
2000 Itasca Horizon/300 Cat & 2017 Jeep Cherokee Overland