This page lists 23 cooling system parts for the 2025 Audi A3, across 11 part types, covering both the 1.4L L4 Turbocharged and the 2.0L L4 Turbocharged. Every part shows its brand, manufacturer part number and fitment notes.
On the 2025 Audi A3, 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. 10 parts of the 23 listed are Water Pump (5 parts), Coolant Reservoir Cap (3 parts) and Coolant / Antifreeze (2 parts). The other 8 part types cover the remaining 13 parts.
The 2025 Audi A3 was sold with both the 1.4L L4 Turbocharged and the 2.0L L4 Turbocharged. 1 part fits every engine; the other 22 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2025 Audi A3 cooling system parts are NISSENS (4 parts), REIN (3 parts) and VALVOLINE (2 parts), plus 11 more brands. Quality grades include Economy and Standard Replacement.
1 part on this 2025 Audi A3 page carries a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — US MOTOR WORKS US8124 (Water Pump). Click any part number to see every vehicle that part fits.
Coolant / Antifreeze
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Fits: 2.0L L4 Turbocharged | 719009 | 🇺🇸 US 🇨🇦 CA | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Fits: 2.0L L4 Turbocharged | 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.
2 Coolant / Antifreeze parts for the 2025 Audi A3 come from VALVOLINE.
The Economy section lists 1 option from VALVOLINE — the catalog's value-priced group. VALVOLINE 719009 is listed in this group.
In the Standard Replacement grade, VALVOLINE supplies 1 part: built to original-equipment specification. A representative part number is VALVOLINE 904683.
This group includes VALVOLINE 719009 and VALVOLINE 904683.
Coolant Hose / Pipe
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN Fits: 2.0L L4 Turbocharged | CHP0663 | 🇺🇸 US 🇨🇦 CA | Pipe | View on Amazon |
This table covers the hard pipes and extra hoses in the coolant circuit.
This group shows a single part: REIN CHP0663.
Coolant Reservoir Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CALORSTAT Fits: 2.0L L4 Turbocharged | RC0162 | 🇺🇸 US 🇨🇦 CA | Maximum Pressure Rating: 23.0 PS | View on Amazon |
| MOTORAD Fits: 2.0L L4 Turbocharged | T93 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| REIN Fits: 2.0L L4 Turbocharged | CPE0039 | 🇺🇸 US 🇨🇦 CA | 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.
3 Coolant Reservoir Cap parts are listed for the 2025 Audi A3, from CALORSTAT, MOTORAD and REIN.
This group includes CALORSTAT RC0162, MOTORAD T93 and REIN CPE0039.
Intercooler
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD Fits: 2.0L L4 Turbocharged | 2711334 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| NISSENS Fits: 2.0L L4 Turbocharged | 96494 | 🇺🇸 US | View on Amazon |
This table covers the intercoolers that cool turbo or supercharger charge air.
2 Intercooler parts for the 2025 Audi A3 come from 2 brands — GPD and NISSENS.
Listed part numbers: GPD 2711334 and NISSENS 96494.
Intercooler Mount
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN Fits: 2.0L L4 Turbocharged | AVM0728 | 🇺🇸 US 🇨🇦 CA | Lower | View on Amazon |
This table covers the Intercooler 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 A3 — REIN AVM0728.
Radiator
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD Fits: 2.0L L4 Turbocharged | 13529C | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NISSENS Fits: 2.0L L4 Turbocharged | 65302 | 🇺🇸 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 A3 come from 2 brands — GPD and NISSENS.
The Economy section: 1 option from GPD. GPD 13529C is listed in this group.
Standard Replacement: 1 part, from NISSENS. A representative part number is NISSENS 65302.
This group includes GPD 13529C and NISSENS 65302.
Radiator Fan Assembly
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NISSENS Fits: 2.0L L4 Turbocharged | 85866 | 🇺🇸 US | RightDual Fans | View on Amazon |
| TYC Fits: all 2025 A3 engines | 624220 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Magna Brand | View on Amazon |
This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator.
2 Radiator Fan Assembly parts are listed for the 2025 Audi A3, from NISSENS and TYC. 1 part fits every engine; the other 1 is engine-specific.
This group includes NISSENS 85866 and TYC 624220.
Temperature Sender / Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NISSENS Fits: 2.0L L4 Turbocharged | 207067 | 🇺🇸 US | Oval Connector, bolted connection | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 Turbocharged | TX275 | 🇺🇸 US 🇨🇦 CA | Attachment Method: Bolt On | 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.
2 Temperature Sender / Sensor parts for the 2025 Audi A3 come from 2 brands — NISSENS and STANDARD MOTOR PRODUCTS.
Listed part numbers: NISSENS 207067 and STANDARD MOTOR PRODUCTS TX275.
Thermostat / Thermostat Housing / Water Outlet Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MAHLE / CLEVITE Fits: 2.0L L4 Turbocharged | 72622 | 🇺🇸 US 🇨🇦 CA | Outlet Flange O-Ring 3mm X 32mmFPM Rubber | View on Amazon |
| MAHLE / CLEVITE Fits: 2.0L L4 Turbocharged | C33480 | 🇺🇸 US 🇨🇦 CA | Molded Rubber | View on Amazon |
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.
2 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2025 Audi A3 come from MAHLE / CLEVITE.
Listed part numbers: MAHLE / CLEVITE 72622 and MAHLE / CLEVITE C33480.
Thermostat Housing / Water Outlet
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Fits: 2.0L L4 Turbocharged | CH3116 | 🇺🇸 US 🇨🇦 CA | Water Outlet | View on Amazon |
This table covers the housings and outlets the thermostat sits in.
One part is listed for the 2025 Audi A3 — MOTORAD CH3116.
Water Pump
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| US MOTOR WORKS Popular Fits: 2.0L L4 Turbocharged | US8124 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| BECK/ARNLEY Fits: 2.0L L4 Turbocharged | 1312517 | 🇺🇸 US 🇨🇦 CA | Resin Impeller | View on Amazon |
| FVP Fits: 2.0L L4 Turbocharged | US8124 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GMB Fits: 2.0L L4 Turbocharged | 1803050 | 🇺🇸 US 🇨🇦 CA | Primary Pump | View on Amazon |
| SALERI Fits: 2.0L L4 Turbocharged | PA1532 | 🇺🇸 US 🇨🇦 CA | MechanicalNon-switchable water pump | 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 A3, from US MOTOR WORKS, BECK/ARNLEY, FVP and 2 other brands. US MOTOR WORKS US8124 carries the "Popular" badge.
Economy: 3 parts, from US MOTOR WORKS, BECK/ARNLEY and FVP. A representative part number is US MOTOR WORKS US8124.
The Standard Replacement section: 2 options from GMB and SALERI. GMB 1803050 is listed in this group.
Part numbers include US MOTOR WORKS US8124 and BECK/ARNLEY 1312517, among others listed above.
Buying Cooling System Parts for a 2025 Audi A3
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.
- Match the engine first. Some cooling system parts fit every engine; others are engine-specific. Each row shows which engine(s) it fits.
- 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 Coolant Reservoir Cap .
Frequently Asked Questions
How many cooling system parts fit the 2025 Audi A3?
Our catalog currently lists 23 cooling system parts for the 2025 Audi A3 across 11 subcategories and 14 brands, covering both the 1.4L L4 Turbocharged and the 2.0L L4 Turbocharged. Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 2025 Audi A3 engines?
Some do. 1 part fits every engine; the other 22 are engine-specific. Each row (and the filter at the top) shows which. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of cooling system problems on a 2025 Audi A3?
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 A3 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 A3?
First match the engine — each row shows which engine(s) the part fits. 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 A3
Cooling System Parts for Other Audi A3 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.