2003 Jaguar XK8 Cooling System Parts

This table covers the engine coolants and antifreeze formulations specified for this cooling system. Typical signs include a rising temperature gauge, rusty or sludged coolant, or a heater that blows cold. Use the chemistry named in the notes. Mixing silicate, OAT and HOAT formulas can gel in the radiator. Read more

21 Coolant / Antifreeze parts for the 2003 Jaguar XK8 come from 7 brands — PRESTONE, PEAK, VALVOLINE and 4 other brands. The "Popular" part is FVP MV5050GAL.

In the Compatible With All Colors grade, PRESTONE supplies 1 part: grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. A representative part number is PRESTONE AF3055.

The Economy section lists 4 options from FVP, PEAK, PRESTONE and 1 other brand — the catalog's value-priced group. FVP MV5050GAL is listed in this group.

In the Premium grade, PRESTONE and PEAK supply 5 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.

In the Standard Replacement grade, VALVOLINE, PENTOSIN, PRESTONE and 4 other brands supply 11 parts: built to original-equipment specification. A representative part number is ACDELCO 105027.

This table covers the hard pipes and extra hoses in the coolant circuit. Read more

This group shows a single part: ÜRO PARTS AJ88519.

This table covers the Coolant Level sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors. Read more

This group shows a single part: ÜRO PARTS LNA5740AB.

This table covers the overflow / expansion tanks that hold extra coolant. Read more

2 Coolant Reservoir parts are listed for the 2003 Jaguar XK8, from SKP and ÜRO PARTS.

Part numbers include SKP SK603169 and ÜRO PARTS MJD4400AB.

This table covers the caps on the overflow / expansion tank. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable. Read more

4 Coolant Reservoir Cap parts are listed for the 2003 Jaguar XK8, from ACDELCO, CALORSTAT, MOTORAD and 1 other brand.

Listed part numbers: ACDELCO 12R03, CALORSTAT RC0194 and MOTORAD T60, plus the other parts above.

This table covers the adapters used to pressure-test this cooling system. Read more

2 Cooling System Tester Adapter parts for the 2003 Jaguar XK8 come from MOTORAD.

Listed part numbers: MOTORAD 3128 and MOTORAD 3127.

This table covers the radiators that dump engine heat to airflow through the core. Typical signs include overheating in traffic, a wet core, or coolant that disappears with no puddle. Replace the cap if it cannot hold the rated pressure, and bleed the system after the swap. Read more

4 Radiator parts for the 2003 Jaguar XK8 come from 4 brands — FAMOUS BRAND, TECHPRO, MAHLE / CLEVITE and 1 other brand.

The Economy section: 2 options from FAMOUS BRAND and TECHPRO. FAMOUS BRAND 432351 is listed in this group.

Standard Replacement: 2 parts, from MAHLE / CLEVITE and NISSENS. A representative part number is MAHLE / CLEVITE CR1345000P.

Part numbers include FAMOUS BRAND 432351, TECHPRO JA3010110 and MAHLE / CLEVITE CR1345000P, among others listed above.

This table covers the caps that hold system pressure at the radiator or reservoir neck. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable. Read more

This group shows a single part: GATES 31550.

This table covers the upper, lower and connecting hoses between radiator, engine and reservoir. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle. Read more

ÜRO PARTS supplies both parts for the 2003 Jaguar XK8.

This group includes ÜRO PARTS C2N1173 and ÜRO PARTS C2N1174.

This table covers the senders that report coolant temperature to the gauge or ECU. Typical signs include a gauge that sits on empty or overheat, or a lamp that does not match what the engine is doing. Rule out the cluster and the wiring before replacing the sender. Read more

20 Temperature Sender / Sensor parts for the 2003 Jaguar XK8 come from 14 brands — WALKER PRODUCTS, HELLA, FOUR SEASONS and 11 other brands. The "Popular" part is ULTRA-POWER 5S1513.

The Economy section: 5 options from ULTRA-POWER, GPD, HOLSTEIN and 2 other brands. ULTRA-POWER 5S1513 is listed in this group.

The Full Service Kit section lists 1 option from WALKER PRODUCTS — grouped under the catalog's "Full Service Kit" designation — the notes column spells out what sets them apart. WALKER PRODUCTS 21191026 is listed in this group.

Standard Replacement: 14 parts, from HELLA, FOUR SEASONS, BECK/ARNLEY and 6 other brands. A representative part number is FOUR SEASONS 36424.

This table covers the thermostats that open the coolant circuit at the specified temperature. Typical signs include slow warm-up, a gauge that climbs in traffic, or heat that never quite arrives. Replace the housing gasket with the thermostat and bleed the system so a trapped air pocket does not cook the new part. Read more

5 Thermostat parts are listed for the 2003 Jaguar XK8, from SKP, ÜRO PARTS, BECK/ARNLEY and 2 other brands. BECK/ARNLEY 1430700 carries the "Popular" badge.

Economy: 2 parts, from SKP and ÜRO PARTS. A representative part number is SKP SKAJ811793.

The Standard Replacement section: 3 options from BECK/ARNLEY, GATES and MOTORAD. BECK/ARNLEY 1430700 is listed in this group.

This group includes BECK/ARNLEY 1430700, SKP SKAJ811793 and ÜRO PARTS AJ811793 and the remaining parts above.

This table covers the seals at the thermostat housing and water outlet. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

This group shows a single part: ÜRO PARTS NCA2269CA.

This table covers the pumps that circulate coolant through the block and radiator. Typical signs include coolant at the weep hole, pulley play, or a growl from the front of the engine. Replace the thermostat and refill with the specified coolant whenever the pump comes off. Read more

12 Water Pump parts are listed for the 2003 Jaguar XK8, from SKP, BECK/ARNLEY, DORMAN and 9 other brands. SKP SK1256030 carries the "Popular" badge.

Economy: 6 parts, from SKP, BECK/ARNLEY, DORMAN and 3 other brands. A representative part number is SKP SK1256030.

The Standard Replacement section: 6 options from GATES, GMB, AISIN and 3 other brands. GATES 43503 is listed in this group.

This table covers the Water Pump Inlet tubes. Read more

One part is listed for the 2003 Jaguar XK8 — ÜRO PARTS MJB6720AC.