Pentair E21 2 Wall Fitting O-Ring Replacement Automatic Pool Cleaner Wall fitting o-ring replacement Fits Pentair Legend II, 3-Wheel and 4-Wheel automatic pool cleaner models LX2000, LL105 Also fits Pentair Jet-Vac and Kreepy Krauly Legend II automatic pool cleaner models JV105, LX5000G, LX5000GG