NA Sr20de power steering help

[static.s13]

So I've got an s13 with an SR20DE. I bought a PS pump from someone and they claimed it was an SR PS pump, but it has 3 ribs instead of 4. So i assumed it was a KA pulley on an SR ps bracket and all.

I have a masterpro belt #K030365 and it's about 4" too long.

does anyone know what belt i need? I need a 3 ribbed belt around 723.9mm long or something.

[Krusty_s13]

Hope this helps.

https://www.vbelts4less.com/Measuring-Belts_ep_46.html

K030285 or 3PK725 going off your number.

grab some string and loop it around the pulleys you need to spin, measure the length of string and go from there.