BRAKE ROTOR, REAR. FITS 1986-1988 XJS WITH DANA DIFFERENTIAL. For the DANA differential. The DANA differential can be identified easily, as it has a three-bolt axle flange and does not have a bottom drain plug. (The Salisbury/GKN differential unit has a five-bolt axle flange and a drain plug, and uses part number JLM730.) (JLM731)
