2023 Audi A3 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

12 Coolant / Antifreeze parts for the 2023 Audi A3 come from 4 brands — PRESTONE, PEAK, VALVOLINE and 1 other brand. The "Popular" part is PRESTONE AF3100. 11 parts fit every engine; the other 1 is engine-specific.

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 5 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.

In the Standard Replacement grade, AISIN, PEAK and VALVOLINE supply 3 parts: built to original-equipment specification. A representative part number is AISIN ACE010.

This table covers the hard pipes and extra hoses in the coolant circuit. Read more

This group shows a single part: REIN CHP0663.

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. Read more

3 Coolant Hose / Pipe Seal parts are listed for the 2023 Audi A3, from MAHLE / CLEVITE and FEL-PRO.

This group includes FEL-PRO 36130, MAHLE / CLEVITE C32354 and MAHLE / CLEVITE 76757.

This table covers the Coolant Hose Connector flanges. Read more

3 Coolant Hose Connector / Flange parts for the 2023 Audi A3 come from VAICO.

Listed part numbers: VAICO V105890, VAICO V106547 and VAICO V103543.

This table covers the Coolant Pipe adapters. Read more

One part is listed for the 2023 Audi A3 — ÜRO PARTS 06K121143PRM.

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

3 Coolant Reservoir Cap parts are listed for the 2023 Audi A3, from CALORSTAT, MOTORAD and REIN.

This group includes CALORSTAT RC0162, MOTORAD T93 and REIN CPE0039.

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

4 Intercooler parts for the 2023 Audi A3 come from 4 brands — DORMAN, GPD, NISSENS and 1 other brand. 1 part fits every engine; the other 3 are engine-specific.

Listed part numbers: DORMAN 918990, GPD 2711334 and NISSENS 96494, plus the other parts above.

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. Read more

One part is listed for the 2023 Audi A3 — REIN AVM0728.

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

7 Radiator parts for the 2023 Audi A3 come from 3 brands — NISSENS, GPD and CSF. The "Popular" part is CSF 3922.

The Economy section: 1 option from GPD. GPD 13529C is listed in this group.

Standard Replacement: 6 parts, from NISSENS and CSF. A representative part number is CSF 3922.

Listed part numbers: CSF 3922, GPD 13529C and NISSENS 65302, plus the other parts above.

This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator. Read more

4 Radiator Fan Assembly parts are listed for the 2023 Audi A3, from TECHPRO, AGILITY, NISSENS and 1 other brand. 2 parts fit every engine; the other 2 are engine-specific.

Economy: 1 part, from TECHPRO. A representative part number is TECHPRO VW3115127.

The Standard Replacement section: 3 options from AGILITY, NISSENS and TYC. AGILITY 6010318 is listed in this group.

Listed part numbers: TECHPRO VW3115127, AGILITY 6010318 and NISSENS 85866, plus the other parts above.

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

6 Temperature Sender / Sensor parts for the 2023 Audi A3 come from 5 brands — GPD, HOLSTEIN, STANDARD MOTOR PRODUCTS and 2 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS TX275. 1 part fits every engine; the other 5 are engine-specific.

The Economy section: 3 options from GPD and HOLSTEIN. GPD 1712644 is listed in this group.

Standard Replacement: 3 parts, from STANDARD MOTOR PRODUCTS, WALKER PRODUCTS and WELLS. A representative part number is STANDARD MOTOR PRODUCTS TX275.

Part numbers include STANDARD MOTOR PRODUCTS TX275, GPD 1712644 and GPD 1814521, 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

3 Thermostat parts are listed for the 2023 Audi A3, from BECK/ARNLEY, INA and MOTORAD. 1 part fits every engine; the other 2 are engine-specific.

Part numbers include BECK/ARNLEY 1430913, INA XW0360 and MOTORAD 838235.

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. Read more

2 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2023 Audi A3 come from MAHLE / CLEVITE.

This group includes MAHLE / CLEVITE 72622 and MAHLE / CLEVITE C33480.

This table covers the housings and outlets the thermostat sits in. Read more

MOTORAD supplies both parts for the 2023 Audi A3.

Listed part numbers: MOTORAD CH2074 and MOTORAD CH3116.

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

13 Water Pump parts are listed for the 2023 Audi A3, from FOUR SEASONS, US MOTOR WORKS, BECK/ARNLEY and 7 other brands. US MOTOR WORKS US8124 carries the "Popular" badge.

Economy: 4 parts, from US MOTOR WORKS, BECK/ARNLEY, FVP and 1 other brand. A representative part number is US MOTOR WORKS US8124.

The Standard Replacement section: 6 options from FOUR SEASONS, GMB, GATES and 2 other brands. GMB 1803050 is listed in this group.

3 ungrouped parts are not assigned to a grade, with the same engine-level match.