2024 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 are listed for the 2024 Audi A3, from PRESTONE, PEAK, VALVOLINE and 1 other brand. PRESTONE AF3100 carries the "Popular" badge. 11 parts fit every engine; the other 1 is engine-specific.

The Compatible With All Colors section lists 1 option from PRESTONE — grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. PRESTONE AF3055 is listed in this group.

In the Economy grade, PRESTONE, VALVOLINE and PEAK supply 3 parts: the catalog's value-priced group. A representative part number is PRESTONE AF3100.

The Premium section lists 5 options from PRESTONE and PEAK — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.

The Standard Replacement section lists 3 options from AISIN, PEAK and VALVOLINE — built to original-equipment specification. AISIN ACE010 is listed in this group.

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

One part is listed for the 2024 Audi A3 — REIN CHP0663.

This table covers the Coolant Hose Connector flanges. Read more

One part is listed for the 2024 Audi A3 — VAICO V103543.

This table covers the Coolant Pipe adapters. Read more

This group shows a single part: 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 for the 2024 Audi A3 come from 3 brands — 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

3 Intercooler parts are listed for the 2024 Audi A3, from GPD, NISSENS and SPECTRA PREMIUM. 1 part fits every engine; the other 2 are engine-specific.

This group includes GPD 2711334, NISSENS 96494 and SPECTRA PREMIUM 44011129.

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

This group shows a single part: 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

6 Radiator parts are listed for the 2024 Audi A3, from CSF, GPD, TECHPRO and 2 other brands. CSF 3922 carries the "Popular" badge.

Economy: 2 parts, from GPD and TECHPRO. A representative part number is GPD 13529C.

The Standard Replacement section: 3 options from CSF and NISSENS. CSF 3922 is listed in this group.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

This group includes CSF 3922, GPD 13529C and TECHPRO VW3010166 and the remaining parts above.

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

3 Radiator Fan Assembly parts for the 2024 Audi A3 come from 3 brands — TECHPRO, NISSENS and TYC. 2 parts fit every engine; the other 1 is engine-specific.

The Economy section: 1 option from TECHPRO. TECHPRO VW3115127 is listed in this group.

Standard Replacement: 2 parts, from NISSENS and TYC. A representative part number is NISSENS 85866.

Listed part numbers: TECHPRO VW3115127, NISSENS 85866 and TYC 624220.

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

7 Temperature Sender / Sensor parts are listed for the 2024 Audi A3, from GPD, HOLSTEIN, STANDARD MOTOR PRODUCTS and 3 other brands. HOLSTEIN 2CTS0182 carries the "Popular" badge. 1 part fits every engine; the other 6 are engine-specific.

Economy: 3 parts, from GPD and HOLSTEIN. A representative part number is HOLSTEIN 2CTS0182.

The Standard Replacement section: 3 options from STANDARD MOTOR PRODUCTS, NISSENS and WELLS. STANDARD MOTOR PRODUCTS TX275 is listed in this group.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

Part numbers include HOLSTEIN 2CTS0182, 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

This group shows a single part: BECK/ARNLEY 1430913.

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

3 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2024 Audi A3, from MAHLE / CLEVITE and ELRING.

Listed part numbers: ELRING 453710, MAHLE / CLEVITE 72622 and MAHLE / CLEVITE C33480.

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

This group shows a single part: 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

9 Water Pump parts for the 2024 Audi A3 come from 6 brands — FOUR SEASONS, US MOTOR WORKS, BECK/ARNLEY and 3 other brands. The "Popular" part is US MOTOR WORKS US8124.

The Economy section: 3 options from US MOTOR WORKS, BECK/ARNLEY and FVP. US MOTOR WORKS US8124 is listed in this group.

Standard Replacement: 4 parts, from FOUR SEASONS, GMB and SALERI. A representative part number is GMB 1803050.

2 further parts sit outside the graded sections, with the same engine-level match.

Listed part numbers: US MOTOR WORKS US8124 and BECK/ARNLEY 1312517, plus the other parts above.