O-RING 50,5x54,06x1,78 mm for CYL-HEAD 47 - TORQUE DRIVER Make Model APRILIA APRILIA AMICO 50 2T (also spare part for CYL. KIT 31 7237 - 31 8501 out of production) APRILIA APRILIA SR 50 2T <-1993 (also spare part for CYL. KIT 31 7237 - 31 8501 out of production) FANTIC FANTIC BIG WHEEL 50 2T (also spare part for CYL. KIT 31 7237 - 31 8501 out of production) GARELLI GARELLI PONY 50 2T (also spare part for CYL. KIT 31 7237 - 31 8501 out of production) GARELLI GARELLI SR 50 2T (also spare part for CYL. KIT 31 7237 - 31 8501 out of production) ITALJET ITALJET BAZOOKA 50 2T (also spare part for CYL. KIT 31 7237 - 31 8501 out of production) ITALJET ITALJET PISTA 50 2T (also spare part for CYL. KIT 31 7237 - 31 8501 out of production) ITALJET ITALJET REPORTER 50 (also spare part for CYL. KIT 31 7237 - 31 8501 out of production) LEM LEM FLASH 50 (also spare part for CYL. KIT 31 7237 - 31 8501 out of production) LEM LEM GHIBLI 50 (also spare part for CYL. KIT 31 7237 - 31 8501 out of production) LEM LEM TORNADO 50 (also spare part for CYL. KIT 31 7237 - 31 8501 out of production) MBK MBK SORRISO 50 2T <-1995 (also spare part for CYL. KIT 31 7237 - 31 8501 out of production) YAMAHA YAMAHA CT 50 2T (also spare part for CYL. KIT 31 7237 - 31 8501 out of production) YAMAHA YAMAHA ZUMA 50 2T (also spare part for CYL. KIT 31 7237 - 31 8501 out of production)