Hi try a Google of part no AL321091
SSANGYONG Mazerati Actyon Korando Kyron Musso Rexton Rodius filter gearbox | eBay
SSANYONG Rodius - 2.7Xdi. SSANGYONG Kyron - 2.7Xdi, 200 Xdi. SSANGYONG ACTYON 05-10 PRK UKR MYS 4 SP R/AWD L4 2.0L 2.3L 200Xdi. SSANGYONG REXTON 01-10 RUS PRK UKR 4 SP R/AWD L4 2.3L. SSANGYONG KORANDO 00-05 PRK 4 SP R/AWD L4 2.0L,2.3L,2.3D.www.ebay.co.uk
I have one of these filters in my car at the moment and it seems to be ok, fitted quite well. The gasket is a rubber/silicone thingy and so does not need done every time, depends when it was last replaced.
just make sure you follow the procedure for filling to the letter its very touchy on fluid level. It has to be just pouring out of the filler with the gearbox at 60C. You might want to make sure you have a decent spanner for the filler plug too its a weird one.