Paul, Did you ever find a cross reference for the filters? Mine is due for its 50 hr. service and I just bought my first set for for my 2615HST at a cost of$80.20. That included MA19632558000 - hydro $23.56
MA31A4002100 - oil $12.17
MA19642509000 -hydraulic $38.35 I also had to install a lower radiator hose in-line heater and a magnetic heater for the fuel tank due to the cold temps here in upstate NY. Mag heater is a KAT's 1153 for $25.88 andKAT's 14500 at $19.98 for the lower hose. Picked them up at Advance Auto Parts and no more hard starts when below 0. George