Safari Wheel Bearing Question

[corosafari]

Can anyone confirm the width of the outer race , of the smaller of the two front wheel bearings. 88 GQ SWB.
As SKF have two bearing options for the number I gave them from existing bearing. SKF LM501349/Q .
they have 19mm wide which has suffix 310 on end of number. My existing bearing is 19mm , the other option is about 22mm from memory , could be why axle end float is about 3mm more than manual states
thanks
Apoligies for double posting , computer said offline when I selected submit first time.