Normally, the 3200 PSI rating is a PSI rating in bypass mode. However, this CAT pump is a true 3000 PSI unit.
In order to make sure it is compatible with you machine you need to be sure of a few things.
1. Engine shaft diameter size
2. What is the HP or CC of your motor
3. The number of bolt holes your pump has
4. Whether your pump is horizontally or vertically mounted
After knowing those things we can better assist you in which replacement pump is right for you.