2025 Audi Q8 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

3 Coolant / Antifreeze parts are listed for the 2025 Audi Q8, from PRESTONE and VALVOLINE. All of them fit every engine offered in the 2025 Q8.

The Heavy Duty section lists 1 option from PRESTONE — rated for severe service. PRESTONE AFC12100 is listed in this group.

The Standard Replacement section lists 1 option from VALVOLINE — built to original-equipment specification. VALVOLINE 904683 is listed in this group.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

Listed part numbers: PRESTONE AFC12100, VALVOLINE 904683 and PRESTONE 78065.

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

This group shows a single part: MOTORAD T111.

This table covers the intercoolers that cool turbo or supercharger charge air. Read more

7 Intercooler parts are listed for the 2025 Audi Q8, from NISSENS, MAHLE / CLEVITE, TYC and 1 other brand. NISSENS 961305 carries the "Popular" badge. 2 parts fit every engine; the other 5 are engine-specific.

Listed part numbers: NISSENS 961305, NISSENS 961304 and GPD 2711558, 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

3 Radiator parts are listed for the 2025 Audi Q8, from GPD, CSF and NISSENS. 2 parts fit every engine; the other 1 is engine-specific.

In the Economy grade, GPD supplies 1 part: the catalog's value-priced group. A representative part number is GPD 13773C.

The Standard Replacement section: 2 options from CSF and NISSENS. CSF 4002 is listed in this group.

Part numbers include GPD 13773C, CSF 4002 and NISSENS 606578.

This table covers the Radiator Insulator sleeves. Read more

This group shows a single part: REIN AVM0730.

This table covers the Radiator mounts. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes. Read more

This group shows a single part: REIN AVM0729.

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

4 Temperature Sender / Sensor parts are listed for the 2025 Audi Q8, from HOLSTEIN, NISSENS, VNE and 1 other brand. 3 parts fit every engine; the other 1 is engine-specific.

Economy: 1 part, from HOLSTEIN. A representative part number is HOLSTEIN 2CTS0163.

The Standard Replacement section: 3 options from NISSENS, VNE and WELLS. NISSENS 207067 is listed in this group.

Part numbers include HOLSTEIN 2CTS0163, NISSENS 207067 and VNE 9408050, among others listed above.

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

This group shows a single part: MOTORAD 1229221.

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 for the 2025 Audi Q8 come from 8 brands — GATES, FOUR SEASONS, REIN and 5 other brands. The "Popular" part is GATES 41568E.

The Economy section: 1 option from REIN. REIN WPA0541 is listed in this group.

Standard Replacement: 4 parts, from GATES, FOUR SEASONS and GMB. A representative part number is GATES 41568E.

7 further parts sit outside the graded sections, with the same engine-level match.