Toyota Land Cruiser transfer cases are prone to leaking out of the front and rear extension housings. Replacing the seals can be a pain but is necessary maintenance to keep the center differential well lubricated and sealed from water & debris. The only notable difference between these two kits is the rear extension housing seal (90311-58008 & 90311-58011) 04362-60050 gasket kit (98-02) includes: OEM gasket, drain plug (3x): 90430-18008 OEM bushing, transfer control shift lever retainer (4x): 36345-60020 OEM bushing (1x): OEM gasket, transfer control shift lever retainer (1x): 36345-60010 OEM ring, o, oil strainer pipe (1x): 90301-07012 OEM seal, oil, for transfer case shifter (1x): 90310-16001 OEM seal, oil, for transfer case input (1x): 90311-48025 (90311-48018) OEM seal, oil transfer extension rear housing sub-assy. (1x): 90311-58008 OEM seal, oil transfer extension front housing sub-assy. (1x): 90311-50014 OEM ring, o (1x): OEM ring, o (1x): OEM ring, o, for speedometer driven gear (1x): 96711-24030 04362-60080 gasket kit (03-07) includes: OEM gasket, drain plug (3x): 90430-18008 OEM bushing, transfer control shift lever retainer (4x): 36345-60020 OEM bushing (1x): OEM gasket, transfer control shift lever retainer (1x): 36345-60010 OEM ring, o, oil strainer pipe (1x): 90301-07012 OEM seal, oil, for transfer case shifter (1x): 90310-16001 OEM seal, oil, for transfer case input (1x): 90311-48025 (90311-48018) OEM seal, oil transfer extension rear housing sub-assy. (1x): 90311-58011 OEM seal, oil transfer extension front housing sub-assy. (1x): 90311-50014 OEM ring, o (1x): OEM ring, o (1x): OEM ring, o, for speedometer driven gear (1x): 96711-24030 Fitment details (HF2A t-case): 01.1998-07.2007 Toyota Land Cruiser (UZJ100, HDJ100, FZJ100, HDJ101, HZJ105, FZJ105) 01.1998-07.2007 Lexus LX470 (UZJ100) 04362-60050 (fits 98-02 full-time 4WD t-case) 04362-60080 (fits 03-07 full-time 4WD t-case) MADE IN JAPAN