Cat 22 Gauges

Hi Folks
I have a Cat Fifteen and one of my customers has asked if i can locate any gauges for his 22 restoration project.  My Fifteen only has an oil pressure gauge, is it the same as the one in the 22 ?   T-543 is the p/n for the fifteen one.
What is the P/N for the 22 Gauge please ? Does anyone sell them these days ? I was lucky enough to pick up an new/old surplus one years ago for mine.
Cheers
Dave

Dave,
My parts book shows 2B5714 for the water gauge for all Cat 22 serial numbers and 8B2355 for the oil gauge for all Cat 22 serial numbers.
I'm can't answer your question about availability.
Pete