Hydraulic pumps differences?

[JustIH]

Have a 444 gas no powersteering. Need new hydraulic pump. Has 4.5 gal factory pump 377033r94 it shows a pump 37699r94 fitting this tractor but has a ps port which I won't use at this time 9gpm 7 to hydraulic
2 gpm for ps port. Does anyone know the differences in these pumps gear size shaft length or diameter differences ?

 

[used red MN]

You dropped a number on the second pump, should be 376993R94. In the 1st link is the ASAP, pump under that number. It has a ..spin view.. I do not see a third port anywhere. The 2nd link shows a 377033R94 pump on eBay, even though there is diesel wrote on the box the CNHI online parts shows that PN for a gas. On that one what does look like a possible 3rd port is a bolt hole. I am pretty sure if they are both said to fit a 444 I would think the gears would interchange but I may be wrong. Where are you getting the info about the 3rd port? If you go to the top of the page and click ..Parts.. you can get to the hydraulic parts and pumps YT has for the 444, you have to click ..more.. to see that model. I have no first hand experience with this model so make sure when you order something they assure you it will fit.
ASAP 9 GPM 376993R94

4.5 GPM pump

 

[JustIH]

You are correct in what you said. The pump you are showing is the one I have been considering. Just trying to make sure all my info is right before I drop that much on a pump. Thank you for your input.