This page lists 30 cooling system parts for the 2021 Audi A1, across 9 part types, covering all 3 engine options (1.5L L4 Turbocharged, 2.0L L4 Turbocharged and 999cc L3 Turbocharged). Every part shows its brand, manufacturer part number and fitment notes.
On the 2021 Audi A1, 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. Most of the listed parts are Coolant / Antifreeze (13 parts), Radiator (4 parts) and Water Pump Gasket (4 parts). The other 6 part types cover the remaining 9 parts.
The 2021 Audi A1 was sold with 3 engines. 13 parts fit every engine; the other 17 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 Audi A1 cooling system parts are ELRING (5 parts), PRESTONE (4 parts) and PEAK (4 parts), plus 9 more brands. Quality grades include Standard Replacement, Premium and Economy.
3 parts on this 2021 Audi A1 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including PRESTONE AF3100 (Coolant / Antifreeze) and VALVOLINE 719009 (Coolant / Antifreeze). Click any part number to see every vehicle that part fits.
Coolant / Antifreeze
Compatible With All Colors
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Fits: all 2021 A1 engines | AF3055 | 🇲🇽 MX | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 2021 A1 engines | AF3100 | 🇲🇽 MX | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| VALVOLINE Popular Fits: all 2021 A1 engines | 719009 | 🇲🇽 MX | Multi-Vehicle Yellow1 Gallon | View on Amazon |
| PEAK Fits: all 2021 A1 engines | BQA1GAL | 🇲🇽 MX | Blue Mountain Long LifeAll Vehicle | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 2021 A1 engines | AF2100 | 🇲🇽 MX | All Vehicles10yr/300k mi | View on Amazon |
| PEAK Fits: all 2021 A1 engines | PKP1GAL | 🇲🇽 MX | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK Fits: all 2021 A1 engines | PXA1GAL | 🇲🇽 MX | Global Lifetime1 Gallon | View on Amazon |
| PRESTONE Fits: all 2021 A1 engines | AFMAX | 🇲🇽 MX | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AISIN Fits: all 2021 A1 engines | ACE010 | 🇲🇽 MX | VioletSi-OAT | View on Amazon |
| PEAK Fits: all 2021 A1 engines | PEV1GAL | 🇲🇽 MX | OET European Extended Life Violet1 Gallon | View on Amazon |
| PENTOSIN Fits: all 2021 A1 engines | 8114306 | 🇲🇽 MX | Pentofrost E1 Gallon | View on Amazon |
| PENTOSIN Fits: all 2021 A1 engines | 8113106 | 🇲🇽 MX | Pentofrost E1.5 Liters | View on Amazon |
| PENTOSIN Fits: all 2021 A1 engines | 8113206 | 🇲🇽 MX | Pentofrost E5 Liters | 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.
13 Coolant / Antifreeze parts for the 2021 Audi A1 come from 5 brands — PRESTONE, PEAK, PENTOSIN and 2 other brands. The "Popular" part is PRESTONE AF3100. Every part fits all 3 engine options (1.5L L4 Turbocharged, 2.0L L4 Turbocharged and 999cc L3 Turbocharged).
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 3 options from PRESTONE, VALVOLINE and PEAK — the catalog's value-priced group. PRESTONE AF3100 is listed in this group.
In the Premium grade, PRESTONE and PEAK supply 4 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.
In the Standard Replacement grade, PENTOSIN, AISIN and PEAK supply 5 parts: built to original-equipment specification. A representative part number is AISIN ACE010.
Coolant Hose / Pipe Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: 2.0L L4 Turbocharged | 16098500 | 🇲🇽 MX | COOLANT PIPE | View on Amazon |
This table covers the seals at the Coolant Hose / Pipe. 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.
One part is listed for the 2021 Audi A1 — AJUSA 16098500.
Intercooler Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 999cc L3 Turbocharged | 459210 | 🇲🇽 MX | Sportback CoolBody code: 8X | View on Amazon |
This table covers the gaskets that seal the Intercooler. 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.
One part is listed for the 2021 Audi A1 — ELRING 459210.
Radiator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NISSENS Fits: 1.5L L4 Turbocharged, 999cc L3 Turbocharged | 606910 | 🇲🇽 MX | Brazed cooling fins | View on Amazon |
| NISSENS Fits: 1.5L L4 Turbocharged, 999cc L3 Turbocharged | 606911 | 🇲🇽 MX | Brazed cooling fins | View on Amazon |
| NISSENS Fits: 2.0L L4 Turbocharged | 606720 | 🇲🇽 MX | Brazed cooling fins | View on Amazon |
| NISSENS Fits: 999cc L3 Turbocharged | 606723 | 🇲🇽 MX | 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 2021 Audi A1 come from NISSENS.
This group includes NISSENS 606910, NISSENS 606911 and NISSENS 606720 and the remaining parts above.
Thermostat
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MARELLI Fits: 999cc L3 Turbocharged | TE0408 | 🇲🇽 MX | 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 2021 Audi A1 — MARELLI TE0408.
Thermostat / Thermostat Housing / Water Outlet Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: 2.0L L4 Turbocharged | 16502300 | 🇲🇽 MX | View on Amazon | |
| ELRING Fits: 999cc L3 Turbocharged | 938850 | 🇲🇽 MX | Sportback CoolBody code: 8X | 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 2021 Audi A1 come from 2 brands — AJUSA and ELRING.
Listed part numbers: AJUSA 16502300 and ELRING 938850.
Thermostat Housing / Water Outlet
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Fits: 999cc L3 Turbocharged | CH2074 | 🇲🇽 MX | Thermostat Housing | View on Amazon |
This table covers the housings and outlets the thermostat sits in.
One part is listed for the 2021 Audi A1 — MOTORAD CH2074.
Water Pump
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Fits: 2.0L L4 Turbocharged | 1205235 | 🇲🇽 MX | Includes Thermostat, Housing, Water Pump, Seals and Bolts | View on Amazon |
| PIERBURG Fits: 2.0L L4 Turbocharged | 707152290 | 🇲🇽 MX | Includes GasketMechanical | View on Amazon |
| PIERBURG Fits: 2.0L L4 Turbocharged | 710103030 | 🇲🇽 MX | Electric | 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.
3 Water Pump parts are listed for the 2021 Audi A1, from PIERBURG and MOTORAD.
Part numbers include MOTORAD 1205235, PIERBURG 707152290 and PIERBURG 710103030.
Water Pump Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 1.5L L4 Turbocharged | 877070 | 🇲🇽 MX | Body code: 8X | View on Amazon |
| ELRING Fits: 999cc L3 Turbocharged | 249150 | 🇲🇽 MX | Engine SidedSportback Cool | View on Amazon |
| ELRING Fits: 999cc L3 Turbocharged | 323380 | 🇲🇽 MX | Sportback CoolBody code: 8X | View on Amazon |
| MAHLE / CLEVITE Fits: 1.5L L4 Turbocharged | K33553 | 🇲🇽 MX | Molded Rubber | View on Amazon |
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.
4 Water Pump Gasket parts for the 2021 Audi A1 come from 2 brands — ELRING and MAHLE / CLEVITE.
This group includes ELRING 877070, ELRING 249150 and ELRING 323380 and the remaining parts above.
Buying Cooling System Parts for a 2021 Audi A1
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: Coolant / Antifreeze and Radiator .
Frequently Asked Questions
How many cooling system parts fit the 2021 Audi A1?
Our catalog currently lists 30 cooling system parts for the 2021 Audi A1 across 9 subcategories and 12 brands, covering all 3 engine options (1.5L L4 Turbocharged, 2.0L L4 Turbocharged and 999cc L3 Turbocharged). Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 2021 Audi A1 engines?
Some do. 13 parts fit every engine; the other 17 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 2021 Audi A1?
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 2021 Audi A1 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 2021 Audi A1?
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 2021 Audi A1
Cooling System Parts for Other Audi A1 Years
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