SPEEDOMETER SENDING UNIT (TRANSDUCER). FITS 1982-1987 XJ6 FROM VIN 331346 ON AND 1981-1984 XJS MODELS UP TO VIN 113536 WITH AN ELECTRONIC SPEEDO Internal diameter of nut is 18mm If your speedometer works intermittently, then this part is broken. Replaces DAC2874 (DAC4570)
