Yes I can confirm that. The bike I fitted it to was my beloved 1999 XT6E. The bike was imported from Poland (Warsaw) by a British soldier in 1999. I bought it in 2005 with only 3,000 miles on it. The bike is still in very good nick (close to immaculate in fact). It's my baby....gets polished more than ridden.
The filter went straight in without a problem. Needs an occasional oil that's all.
Very happy with the result too.
I think I paid about £40 for the filter including delivery. It was £40 well spent though...
The listed filter on Pipercross website should fit any XT6E including the last ones made in 2002. It just slips into the filter housing.
If you want to have a closer look, I'm just up the road from Dartford?
Sent you a PM Geoff.
Triumph Bonneville 800 (2004), Yamaha XT600E (1999), Honda XBR500 (1986).