27 Cooling system parts are listed for the 2025 Audi S5, in 10 part types, covering the 3.0L V6 Turbocharged engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2025 Audi S5, 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. 16 parts of the 27 listed are Coolant / Antifreeze (7 parts), Water Pump (5 parts) and Radiator (4 parts). The other 7 part types cover the remaining 11 parts.
Every part on this page is matched to the 3.0L V6 Turbocharged — the only engine offered in the 2025 Audi S5.
The most listed brands for 2025 Audi S5 cooling system parts are PRESTONE (5 parts), REIN (4 parts) and NISSENS (3 parts), plus 10 more brands. Quality grades include Standard Replacement, Economy and Premium.
3 parts on this 2025 Audi S5 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including PRESTONE AF3100 (Coolant / Antifreeze) and HELLA 358304701 (Water Pump). Click any part number to see every vehicle that part fits.
Coolant / Antifreeze
Compatible With All Colors
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE | AF3055 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular | AF3100 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| VALVOLINE | 719009 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular | AF2100 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | All Vehicles10yr/300k mi | View on Amazon |
| PRESTONE | AF6510 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | MAX European Violet1 Gallon | View on Amazon |
| PRESTONE | AFMAX | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE | 904683 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
7 Coolant / Antifreeze parts for the 2025 Audi S5 come from 2 brands — PRESTONE and VALVOLINE. The "Popular" part is PRESTONE AF3100.
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 2 options from PRESTONE and VALVOLINE — the catalog's value-priced group. PRESTONE AF3100 is listed in this group.
In the Premium grade, PRESTONE supplies 3 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 supplies 1 part: built to original-equipment specification. A representative part number is VALVOLINE 904683.
Listed part numbers: PRESTONE AF3100, PRESTONE AF3055 and VALVOLINE 719009, plus the other parts above.
Coolant Reservoir
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN | EPT0271 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | S5 Sportbackwithout Cap | View on Amazon |
This table covers the overflow / expansion tanks that hold extra coolant.
One part is listed for the 2025 Audi S5 — REIN EPT0271.
Coolant Reservoir Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD | T111 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Standard | View on Amazon |
| REIN | CPE0039 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | S5 Base Model | 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.
2 Coolant Reservoir Cap parts are listed for the 2025 Audi S5, from MOTORAD and REIN.
Part numbers include MOTORAD T111 and REIN CPE0039.
Radiator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MAHLE / CLEVITE | CR960000S | 🇺🇸 US | Brazed cooling fins | View on Amazon |
| MARELLI | BM2176M | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | S5 Sportback | View on Amazon |
| MARELLI | BM2177M | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | S5 Sportback | 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.
4 Radiator parts for the 2025 Audi S5 come from 3 brands — MARELLI, MAHLE / CLEVITE and NISSENS.
Part numbers include MAHLE / CLEVITE CR960000S, MARELLI BM2176M and MARELLI BM2177M, among others listed above.
Radiator Fan Shroud
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP | SK621318 | 🇺🇸 US | S5 Sportback | 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 🇲🇽 MX | View on Amazon |
This table covers the Radiator Insulator sleeves.
One part is listed for the 2025 Audi S5 — REIN AVM0730.
Radiator Mount
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN | AVM0729 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Center 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 S5 — REIN AVM0729.
Temperature Sender / Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN | 2CTS0163 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LowerS5 Sportback | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NISSENS | 207067 | 🇺🇸 US | S5 Sportbackconnector Oval, install method: bolted connection | View on Amazon |
| VNE | 9408050 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LowerS5 Sportback | View on Amazon |
| WELLS | 5S16784 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LowerS5 Sportback | 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 S5 come from 4 brands — HOLSTEIN, NISSENS, VNE and 1 other brand.
The Economy section: 1 option from HOLSTEIN. HOLSTEIN 2CTS0163 is listed in this group.
Standard Replacement: 3 parts, from NISSENS, VNE and WELLS. A representative part number is NISSENS 207067.
This group includes HOLSTEIN 2CTS0163, NISSENS 207067 and VNE 9408050 and the remaining parts above.
Thermostat
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD | 1229221 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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 S5 — MOTORAD 1229221.
Water Pump
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular | 358304701 | 🇺🇸 US | S5 SportbackAuxiliary | View on Amazon |
| FOUR SEASONS | 89087 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | S5 SportbackAuxiliary | View on Amazon |
| FOUR SEASONS | 89085 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | S5 SportbackHeater Water Pump | View on Amazon |
| FOUR SEASONS | 89084 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | S5 SportbackTurbocharger Coolant Pump | View on Amazon |
| NISSENS | 832121 | 🇺🇸 US | S5 SportbackAuxiliary | 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.
5 Water Pump parts are listed for the 2025 Audi S5, from FOUR SEASONS, HELLA and NISSENS. HELLA 358304701 carries the "Popular" badge.
Part numbers include HELLA 358304701, FOUR SEASONS 89087 and FOUR SEASONS 89085, among others listed above.
Buying Cooling System Parts for a 2025 Audi S5
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: Coolant / Antifreeze and Water Pump .
Frequently Asked Questions
How many cooling system parts fit the 2025 Audi S5?
Our catalog currently lists 27 cooling system parts for the 2025 Audi S5 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 S5?
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 S5 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 S5?
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 S5
Cooling System Parts for Other Audi S5 Years
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