The 2025 Audi A6 Allroad has 21 cooling system parts with verified fitment on this page — 10 part types and 13 brands, covering the 3.0L V6 Turbocharged engine. Each part includes a manufacturer part number and application notes.
On the 2025 Audi A6 Allroad, the cooling system system keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses. 14 parts of the 21 listed are Water Pump (8 parts), Temperature Sender / Sensor (4 parts) and Radiator (2 parts). The other 7 part types cover the remaining 7 parts.
Every part on this page is matched to the 3.0L V6 Turbocharged — the only engine offered in the 2025 Audi A6 Allroad.
The most listed brands for 2025 Audi A6 Allroad cooling system parts are NISSENS (5 parts), MOTORAD (2 parts) and REIN (2 parts), plus 10 more brands. Quality grades include Standard Replacement and Economy.
2 parts on this 2025 Audi A6 Allroad page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including GATES 41568E (Water Pump) and GATES 41592E (Water Pump). Click any part number to see every vehicle that part fits.
Coolant / Antifreeze
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE | 904683 | 🇺🇸 US 🇨🇦 CA | HT-12 Pink1 Gallon | View on Amazon |
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.
This group shows a single part: VALVOLINE 904683.
Coolant Reservoir Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD | T111 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
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.
One part is listed for the 2025 Audi A6 Allroad — MOTORAD T111.
Intercooler
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NISSENS | 961345 | 🇺🇸 US | View on Amazon |
This table covers the intercoolers that cool turbo or supercharger charge air.
This group shows a single part: NISSENS 961345.
Radiator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CSF | 4002 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| NISSENS | 606578 | 🇺🇸 US | Brazed cooling fins | View on Amazon |
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.
2 Radiator parts for the 2025 Audi A6 Allroad come from 2 brands — CSF and NISSENS.
Listed part numbers: CSF 4002 and NISSENS 606578.
Radiator Fan Shroud
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP | SK621318 | 🇺🇸 US | View on Amazon |
This table covers the shrouds that duct air through the fan and radiator.
This group shows a single part: SKP SK621318.
Radiator Insulator Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN | AVM0730 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Radiator Insulator sleeves.
One part is listed for the 2025 Audi A6 Allroad — REIN AVM0730.
Radiator Mount
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN | AVM0729 | 🇺🇸 US 🇨🇦 CA | Upper | View on Amazon |
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.
One part is listed for the 2025 Audi A6 Allroad — REIN AVM0729.
Temperature Sender / Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN | 2CTS0163 | 🇺🇸 US 🇨🇦 CA | Lower | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NISSENS | 207067 | 🇺🇸 US | Oval Connector, bolted connection | View on Amazon |
| VNE | 9408050 | 🇺🇸 US 🇨🇦 CA | Lower | View on Amazon |
| WELLS | 5S16784 | 🇺🇸 US 🇨🇦 CA | Lower | View on Amazon |
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.
4 Temperature Sender / Sensor parts for the 2025 Audi A6 Allroad come from 4 brands — HOLSTEIN, NISSENS, VNE and 1 other brand.
The Economy section lists 1 option from HOLSTEIN — the catalog's value-priced group. HOLSTEIN 2CTS0163 is listed in this group.
In the Standard Replacement grade, NISSENS, VNE and WELLS supply 3 parts: built to original-equipment specification. A representative part number is NISSENS 207067.
Part numbers include HOLSTEIN 2CTS0163, NISSENS 207067 and VNE 9408050, among others listed above.
Thermostat
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD | 1229221 | 🇺🇸 US 🇨🇦 CA | Includes Sensor and SealStandard | View on Amazon |
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.
One part is listed for the 2025 Audi A6 Allroad — MOTORAD 1229221.
Water Pump
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY | 1312562 | 🇺🇸 US 🇨🇦 CA | HVAC SystemAuxiliary | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular | 41568E | 🇺🇸 US 🇨🇦 CA | Electric | View on Amazon |
| GATES Popular | 41592E | 🇺🇸 US 🇨🇦 CA | Electric | View on Amazon |
| FOUR SEASONS | 89085 | 🇺🇸 US 🇨🇦 CA | RearHeater Water Pump | View on Amazon |
| FOUR SEASONS | 89084 | 🇺🇸 US 🇨🇦 CA | RightAuxiliary | View on Amazon |
| NISSENS | 832121 | 🇺🇸 US | Engine CoolingAuxiliary | View on Amazon |
| NISSENS | 832172 | 🇺🇸 US | HVAC SystemAuxiliary | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 358304701 | 🇺🇸 US | Engine CoolingAuxiliary | View on Amazon |
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.
8 Water Pump parts are listed for the 2025 Audi A6 Allroad, from GATES, FOUR SEASONS, NISSENS and 2 other brands. GATES 41568E carries the "Popular" badge.
Economy: 1 part, from BECK/ARNLEY. A representative part number is BECK/ARNLEY 1312562.
The Standard Replacement section: 6 options from GATES, FOUR SEASONS and NISSENS. GATES 41568E is listed in this group.
1 ungrouped part is not assigned to a grade, with the same engine-level match.
Part numbers include GATES 41568E, BECK/ARNLEY 1312562 and GATES 41592E, among others listed above.
Buying Cooling System Parts for a 2025 Audi A6 Allroad
On this vehicle, the cooling system system keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses.
- Confirm you have the 3.0L V6 Turbocharged engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Water Pump and Temperature Sender / Sensor .
Frequently Asked Questions
How many cooling system parts fit the 2025 Audi A6 Allroad?
Our catalog currently lists 21 cooling system parts for the 2025 Audi A6 Allroad across 10 subcategories and 13 brands, covering the 3.0L V6 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of cooling system problems on a 2025 Audi A6 Allroad?
Common symptoms include a rising temperature gauge in traffic, sweet-smelling steam, crusty deposits around hose clamps, or a heater that blows cold. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace the thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2025 Audi A6 Allroad was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2025 Audi A6 Allroad?
Every part on this page is matched to the 3.0L V6 Turbocharged engine. Then replace coolant with the exact specification the manufacturer calls for — mixing chemistries can gel and block small passages. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2025 Audi A6 Allroad
Cooling System Parts for Other Audi A6 Allroad Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.