NEW BRAKE MASTER CYLINDER, FITS 1974-1977 XJ6 XJ12 WITH REMOTE RESERVOIR, AND 76-89 XJS WITHOUT ABS. FOR THE XJS MODELS YOU WILL NEED TO REUSE YOUR PLASTIC FITTINGS AND INSTALL THE CORRECT SEALS BY PURCHASING OUR SEAL KIT AAU6839-X (REPLACES PMK181 GMC416 74066132) (CAC1583)