A completely new Distributor with new cap, rotor, contacts, condenser, bearings/bushes and oil seals. assembled in the UK with weights and springs set to the original advance curve, just as Lucas would have built it and set it up originally. Lucas distributors are identified by the 5 figure number stamped on the body, in this case 40718. Listed as being fitted to the MGA Twin Cam in 1960. Originally Lucas supplied their type 23D4 for this car, however, parts for that distributor are no longer available, so this new unit has been built up based on the 45D4 distributor with spare parts more readily available for ongoing operation