Brand NEW OEM differential pinion seal. Check the wear ring, if it has grooves it is time to replace. It is very easy to miss this and blame the new seal on bad ring wear. Fits:Gen 1 Front and Rear DiffsGen 2 Outlander and Renegade Front and RearEarly Commander RearAll Maverick and Commander Front EXCEPT G2 XMR 800/850/1000 REAR DIFFERENTIAL Dimensions listed are 70mm outside x 37mm inside Please check this is the correct seal.