2008 Cadillac XLR 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

16 Coolant / Antifreeze parts are listed for the 2008 Cadillac XLR, from PRESTONE, PEAK, VALVOLINE and 3 other brands. FVP MV5050GAL carries the "Popular" badge. All of them fit every engine offered in the 2008 XLR.

The Compatible With All Colors section lists 1 option from PRESTONE — grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. PRESTONE AF3055 is listed in this group.

In the Economy grade, FVP, PEAK, PRESTONE and 1 other brand supply 4 parts: the catalog's value-priced group. A representative part number is FVP MV5050GAL.

The Premium section lists 4 options from PRESTONE and PEAK — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.

The Standard Replacement section lists 7 options from VALVOLINE, PRESTONE, ACDELCO and 2 other brands — built to original-equipment specification. ACDELCO 105027 is listed in this group.

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

6 Coolant Hose / Pipe parts are listed for the 2008 Cadillac XLR, from CONTINENTAL, ACDELCO, DAYCO and 1 other brand. CONTINENTAL 61267 carries the "Popular" badge.

Listed part numbers: CONTINENTAL 61267, DAYCO 71709 and ACDELCO 20149S, plus the other parts above.

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

3 Coolant Reservoir Cap parts for the 2008 Cadillac XLR come from 3 brands — ACDELCO, DORMAN and MOTORAD. Every part fits both the 4.4L V8 Supercharged and the 4.6L V8.

This group includes ACDELCO 12R04, DORMAN 54216 and MOTORAD T61.

This table covers the Cooling Fan control modules. Read more

6 Cooling Fan Control Module parts for the 2008 Cadillac XLR come from 4 brands — US MOTOR WORKS, STANDARD MOTOR PRODUCTS, DORMAN and 1 other brand. The "Popular" part is STANDARD MOTOR PRODUCTS RY2011. Every part fits both the 4.4L V8 Supercharged and the 4.6L V8.

Part numbers include STANDARD MOTOR PRODUCTS RY2011, DORMAN 902437 and GM GENUINE 19530917, among others listed above.

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

4 Cooling System Tester Adapter parts are listed for the 2008 Cadillac XLR, from GATES and MOTORAD. All of them fit every engine offered in the 2008 XLR.

Listed part numbers: GATES 31431, GATES 31391 and MOTORAD 3128, plus the other parts above.

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

6 Radiator parts are listed for the 2008 Cadillac XLR, from TECHPRO, DENSO, TYC and 3 other brands. DENSO 2219393 carries the "Popular" badge. 5 parts fit every engine; the other 1 is engine-specific.

Economy: 1 part, from TECHPRO. A representative part number is TECHPRO GM3010506.

The Standard Replacement section: 5 options from DENSO, TYC, FVP and 2 other brands. DENSO 2219393 is listed in this group.

Part numbers include DENSO 2219393, TECHPRO GM3010506 and TYC 2715, 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

2 Radiator Cap parts are listed for the 2008 Cadillac XLR, from ACDELCO and GATES. All of them fit every engine offered in the 2008 XLR.

This group includes ACDELCO RC107 and GATES 31566.

This table covers the petcocks used to drain the radiator. Read more

This group shows a single part: DORMAN 61136.

This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator. Read more

8 Radiator Fan Assembly parts for the 2008 Cadillac XLR come from 8 brands — DORMAN, SKP, GPD and 5 other brands. The "Popular" part is DORMAN 621102. Every part fits both the 4.4L V8 Supercharged and the 4.6L V8.

The Economy section: 3 options from DORMAN, SKP and GPD. DORMAN 621102 is listed in this group.

Standard Replacement: 5 parts, from AGILITY, FOUR SEASONS, TYC and 2 other brands. A representative part number is AGILITY 6016142.

Listed part numbers: DORMAN 621102, SKP SK621102 and GPD 2811645, plus the other parts above.

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

8 Radiator Hose parts for the 2008 Cadillac XLR come from 4 brands — GATES, CONTINENTAL, ACDELCO and 1 other brand. The "Popular" part is GATES 21665. 1 part fits every engine; the other 7 are engine-specific.

Part numbers include GATES 21665, ACDELCO 24215L and CONTINENTAL 61546, among others listed above.

This table covers the Radiator Upper Air Baffle retainers and clips. Read more

2 Radiator Upper Air Baffle Retainer / Clip parts for the 2008 Cadillac XLR come from DORMAN. Every part fits both the 4.4L V8 Supercharged and the 4.6L V8.

This group includes DORMAN 45490 and DORMAN 961070.

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

22 Temperature Sender / Sensor parts are listed for the 2008 Cadillac XLR, from STANDARD MOTOR PRODUCTS, NTK, WALKER PRODUCTS and 14 other brands. NTK EF0008 carries the "Popular" badge. All of them fit every engine offered in the 2008 XLR.

Economy: 8 parts, from NTK, STANDARD MOTOR PRODUCTS, GPD and 5 other brands. A representative part number is NTK EF0008.

In the Full Service Kit grade, WALKER PRODUCTS supplies 1 part: grouped under the catalog's "Full Service Kit" designation — the notes column spells out what sets them apart. A representative part number is WALKER PRODUCTS 21191012.

The Standard Replacement section: 13 options from STANDARD MOTOR PRODUCTS, WELLS, ACDELCO and 8 other brands. ACDELCO 1551107 is listed in this group.

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

7 Thermostat parts for the 2008 Cadillac XLR come from 5 brands — MOTORAD, GATES, AISIN and 2 other brands. The "Popular" part is GATES 33808. 5 parts fit every engine; the other 2 are engine-specific.

In the Heavy Duty grade, MOTORAD supplies 1 part: rated for severe service. A representative part number is MOTORAD 5339180.

Premium: 1 part, from MOTORAD. A representative part number is MOTORAD 7339180.

Standard Replacement: 5 parts, from GATES, MOTORAD, AISIN and 2 other brands. A representative part number is GATES 33808.

Listed part numbers: GATES 33808, MOTORAD 5339180 and MOTORAD 7339180, plus the other 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

10 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2008 Cadillac XLR, from FEL-PRO, APEX, VICTOR REINZ and 4 other brands. FEL-PRO 35660 carries the "Popular" badge. 7 parts fit every engine; the other 3 are engine-specific.

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

11 Water Pump parts for the 2008 Cadillac XLR come from 8 brands — FVP, GATES, GMB and 5 other brands. The "Popular" part is US MOTOR WORKS US8955. 8 parts fit every engine; the other 3 are engine-specific.

The Economy section: 4 options from US MOTOR WORKS, AIRTEX, FVP and 1 other brand. US MOTOR WORKS US8955 is listed in this group.

Standard Replacement: 7 parts, from GATES, GMB, ACDELCO and 2 other brands. A representative part number is ACDELCO 252890.

This table covers the gaskets between the water pump and the block or housing. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

2 Water Pump Gasket parts are listed for the 2008 Cadillac XLR, from APEX and VICTOR REINZ. All of them fit every engine offered in the 2008 XLR.

Part numbers include APEX AWP3309 and VICTOR REINZ 711603300.

This table covers the Water Pump Seal O-rings. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove. Read more

2 Water Pump Seal / O-Ring parts for the 2008 Cadillac XLR come from 2 brands — FEL-PRO and MAHLE / CLEVITE. Every part fits both the 4.4L V8 Supercharged and the 4.6L V8.

Part numbers include FEL-PRO 35860 and MAHLE / CLEVITE K32433.