REBUILT CYLINDER HEAD, LEFT SIDE. FITS 5.3 LITER V12 XJS FROM 1980 ON.. The price includes a $400 core charge that you get back when you send your old part to us. Complete head, with valves, springs, and cam. ready to bolt on. If your old cylinder head requires machining or welding there will be a deduction from the core charge to cover the machine shop charge. There is no way to predict how much that will be in advance but it is important to know that you may not receive your full core charge back. We have no control over this. (RTC2971)