Check the listing for details. Ignition Tune up kit Ford NAA, NAB Tractor USA Copper Plug Wires. Condition: New. Listed at 70.00 USD. Distributor Ignition Tune up Kit:USA Made Distributor Cap, Points, Condenser, Rotor, Custom USA Made Copper core spark plug wire set, 4 Autolite 437 Spark PlugsFits: 4 Cylinder Ford Tractors: Golden Jubilee, Jubilee, NAA, NAB, 501, 541, 600, 601, 611, 620, 621, 630, 631, 640, 641, 650, 651, 660, 661, 671, 681, 700, 701, 740, 741, 771, 800, 801, 811, 820, 821, 840, 841, 850, 851, 861, 871, 881, 900, 901, 941, 950, 951, 960, 961, 971, 981, 2000, 2031, 2111, 2131, 4000, 4031, 4110, 4120, 4121, 4140 (1953 thru 1964) Please verify your tractor has the correct Side Mounted Distributor.Copper Spark plug wires are for use with Distributor (with Points) or Magneto - Not for use with Electronic Ignition / Solid State IgnitionThis Tune up kit does not fit Ford Tractors 2N, 9N or 8N, or any other Distributor.Note: When replacing the Rotor button on the Side Mount Distributor, if your Rotor button clip is worn and not replaced; When you install a New Rotor button, it may come loose inside the Distributor Cap and break: Check your Rotor Button clip before use to prevent damage to your Rotor Button.