May 10, 2012
Upgrade and Service your XK8 Cooling System for Just 26% More than the cost of a Water Pump from Jaguar !

XK8 XKR Parts Cooling System Great Value Service Kit
On all car engines it is vital that the cooling system is working efficiently to avoid over heating and then possible failure of head gaskets, premature wear of the crankshaft bearings etc. The Jaguar V8 4.0 Litre engine cooling system has a history of problems relating to the break up of blades in the early water pumps and the cracking of the plastic thermostat housing. Also although Jaguar says the engine coolant is 'Long Life', this should be changed every 20,000 to 30,000 miles as it will lose it's corrosion inhibitor and anti freezing qualities. Regular flushing of the system is also vital to remove the build up of contaminants that can restrict / block flow in the waterways.
If you are going to replace individual parts, why not service the other parts of the system at the same time ?.
Our great value service kit includes:
1. Correct specification coolant - 5 Litres to make 10 litres when mixed with water (either green or red)
2. Latest Spec OE Water Pump and Gasket (3 Year Warranty)
3. All Alloy Thermostat Housing including caps and seals
4. Thermostat and Seal
Special Offer Price Just = £139.75 + Shipping and VAT.
That's just 26% more than the cost of a Genuine Jaguar Water Pump !
When servicing the cooling system, it is critical that the correct specification of coolant is used either green for early cars or red for later cars. The two are different and should never be mixed. Please provide the last 6 digits of your cars chassis number so we can provide the right coolant.
CLICK HERE to contact Dave to enquire further or order.
Jaguar XK8 and XKR Parts
October 18, 2009
As with all auto engines, severe overheating problems can be very frustrating and nerve racking especially in hot weather and slow moving traffic. If not resolved it can be potentially very expensive !!. It’s critical to ensure your XK8 cooling system is in tip top order for piece of mind. Worse case severe overheating scenarios are; blown head gaskets, damaged cylinder heads and potentially a deterioration in engine lubrication quality. The latter can then affect the longevity of crankshaft bearings and the general life of the XK8 engine.

XK8 Water Pump Parts
As mentioned in other posts, prior to 2003 and the introduction of the 4.2 XK engines, earlier cars suffered from using poor quality parts in the form of lightweight materials. Relating to the water pump, this manifests itself in the disintegration / breaking up of the plastic impellor within the water pump. This then leads to reduced coolant flow, localised heating and the worst case problems mentioned above. Indicative signs of a cooling problem on the XK8 engine are the cooling fans staying on for long periods regardless of temperature and / or one of the top hoses blowing off.
Before going to the effort of removing / replacing the water pump, with a cold engine, take the filler cap off the expansion tank and then ask someone to run the engine for you at 1200 rpm. Should the pump be working correctly, water should be circulating / swirling well in the tank. If there is a problem, then there will be very little swirl and therefore indicative of a problem with the water pump. If you are going to the effort of checking it then it’s worth replacing with the latest XK8 parts including water pump and other cooling system parts.

XK8 XKR Parts Water Pump and Thermostat Parts Layout
Pre 2003 cars also suffered from breakdown of other plastic cooling system parts. These relate to the thermostat housing rising out of the block and the bridge pipe linking the cylinder heads on naturally aspirated cars (the XKR has an alloy pipe)
The thermostat housings are now available in alloy and we hope that the bridge pipe will follow.
The Jaguar Part number for the water pump is - AJ8008912 and all later water pumps supercede to this part number.
If you are going to the trouble of the above then we recommend you change the thermostat and check / replace all hoses as required.
XK8 XKR Parts