This hydraulic filter is used on later mid frame models and all Gen2 large frame machines. On the mid frame models it was updated from the spin-on filter, part number 1000359349. The serial number breaks are listed below.

SW16 after WNCS0501VPUM00544

SW17 after WNCS0502KPUM00550

SW20 after WNCS0504EPUM00527

SW21 after WNCS0503LPUM00550

ST28 after WNCS0506TPUM00555

ST31 after WNCS0506JPUM00620

All ST27

All ST37

When in doubt, flip the cab and check which hydraulic filter you need.