M5R1 M5OD Ford Ranger Bronco 5 Spd Transmission Input Gear This is a cluster gear for the Ford Ranger Truck 2x2 or 4x4 5 speed manual transmission used during 1987-on. You can identify this transmission by tags on the side that read: "E87A, E97A, FO7A, or F17A". This transmission has an aluminum case and an aluminum top cover. Note this transmission is called the M5R1 or M5OD or Mazda Type. Note: This input is used with the cluster that has a tooth count of 38-32-24-16 This input is usually in the 4 Cylinder 2.3L or 2.5L. You need to count the teeth on the cluster to be sure. Do not assume this is the right part without counting the teeth on your cluster! If you have the 6 Cylinder, you will likely need a different Input but you need to count the teeth on your cluster to be sure the way to ID the input gear is by the tooth count off the cluster! These are quality gear sets we have been selling to transmission repair shops for years! Be sure to check your input and cluster gear for wear. These gears fail quite often and when not replaced during an overhaul will cause noise.