This is the most advanced distributor available for your Triumph Spitfire 1975 to 1980, MGB 62 to 80 (Neg Grd only) and MG Midget 1961 to 1979 (Neg Grd Only). This Complete Unit (Cap+Rotor included) has the most updated electronic ignition available for cars with 25D4 and 45D4, 45DE4 distributors. Modern Japanese electronics have been combined the Lucas 45D4 Distributor to give you the best of both worlds, maintenance free ignition with the original look of your British Distributor. Some distributors offer a 12 month warranty; this unit carries a 36 Month Warranty, this is the longest in the Business! Very simple installation, two wires, no cutting, just plugs in and go! Note: This distributor will only work for Neg. Ground Cars. 41427