Starter solenoid relay compatible with CE50, RZ50, TZM50, TZR50, WR125, VP125, VP250, TW200, BW200, BW350, YZF R125, and R7.Compatible with part numbers 1RL-81950-92-00, 29U-81950-92-00, 29U-81950-93-00, 53L-81940-01-00, 27V-81940-02-00, and 3GD-81950-01-00.Constructed from copper and EPDM.Designed to assist cranking power and reduce startup switch current.Terminal markings: B for , M for motor.correct terminal orientation during installation.