OEM Toyota – Fits FJ40/45/55 1958 – 8/1974 Time and general use will take its toll on your ignition system. A corroded rotor could cause issues such as weak or erratic spark, or misfires. This new OEM rotor will ensure you get the best spark possible after your tune-up! – Brass contact terminal – Push-on type. Spring loaded. *Note: Do not alter the spring tension within the rotor.