2023 Audi TT 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 TT come from 4 brands — PRESTONE, PEAK, VALVOLINE and 1 other brand. The "Popular" part is PRESTONE AF3100. 10 parts fit every engine; the other 2 are 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

3 Coolant Hose / Pipe parts for the 2023 Audi TT come from 2 brands — REIN and VAICO.

This group includes REIN CHP0663, REIN CHP0793 and VAICO V105893.

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

2 Coolant Hose / Pipe Seal parts are listed for the 2023 Audi TT, from DORMAN and MAHLE / CLEVITE. 1 part fits every engine; the other 1 is engine-specific.

Listed part numbers: DORMAN 47451 and MAHLE / CLEVITE C32354.

This table covers the Coolant Hose Connector flanges. Read more

6 Coolant Hose Connector / Flange parts for the 2023 Audi TT come from 3 brands — VAICO, MOTORAD and REIN. The "Popular" part is VAICO V105890.

Part numbers include VAICO V105890, VAICO V106547 and MOTORAD CH8056, among others listed above.

This table covers the overflow / expansion tanks that hold extra coolant. Read more

5 Coolant Reservoir parts are listed for the 2023 Audi TT, from TECHPRO, ÜRO PARTS, HELLA and 1 other brand. ÜRO PARTS 5Q0121407T carries the "Popular" badge. 2 parts fit every engine; the other 3 are engine-specific.

Listed part numbers: ÜRO PARTS 5Q0121407T, HELLA 366365551 and REIN EPT0142, plus the other parts above.

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 TT, from CALORSTAT, MOTORAD and REIN.

Listed part numbers: CALORSTAT RC0162, MOTORAD T93 and REIN CPE0039.

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

3 Intercooler parts for the 2023 Audi TT come from 3 brands — GPD, NISSENS and SPECTRA PREMIUM.

Part numbers include GPD 2711334, NISSENS 96494 and SPECTRA PREMIUM 44011129.

This table covers the Intercooler Air Hose pipes. Read more

3 Intercooler Air Hose / Pipe parts for the 2023 Audi TT come from 3 brands — GATES, REIN and VAICO.

This group includes GATES 26475, REIN TCH0334 and VAICO V10000135.

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 TT — 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 for the 2023 Audi TT come from 5 brands — NISSENS, GPD, CSF and 2 other brands. The "Popular" part is CSF 3922.

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

Standard Replacement: 5 parts, from NISSENS, CSF, DENSO and 1 other brand. A representative part number is CSF 3922.

This group includes CSF 3922, GPD 13529C and DENSO 2219430 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 are listed for the 2023 Audi TT, from FOUR SEASONS, NISSENS and UAC. 1 part fits every engine; the other 2 are engine-specific.

Listed part numbers: FOUR SEASONS 75909, NISSENS 85866 and UAC FA50637C.

This table covers the upper, lower and connecting hoses between radiator, engine and reservoir. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle. Read more

One part is listed for the 2023 Audi TT — REIN CHR0794.

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

13 Temperature Sender / Sensor parts for the 2023 Audi TT come from 9 brands — HOLSTEIN, STANDARD MOTOR PRODUCTS, GPD and 6 other brands. The "Popular" part is HOLSTEIN 2CTS0490.

The Economy section: 5 options from HOLSTEIN, STANDARD MOTOR PRODUCTS, GPD and 1 other brand. HOLSTEIN 2CTS0490 is listed in this group.

Standard Replacement: 7 parts, from VNE, STANDARD MOTOR PRODUCTS, DELPHI and 3 other brands. A representative part number is STANDARD MOTOR PRODUCTS TS608.

1 further part sits outside the graded sections, with the same engine-level match.

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 TT, from BECK/ARNLEY, INA and MOTORAD.

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 TT come from MAHLE / CLEVITE.

Listed part numbers: MAHLE / CLEVITE 72622 and MAHLE / CLEVITE C33480.

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

One part is listed for the 2023 Audi TT — 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

15 Water Pump parts are listed for the 2023 Audi TT, from PIERBURG, SALERI, US MOTOR WORKS 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: 11 options from PIERBURG, SALERI, GATES and 3 other brands. GATES 42209 is listed in this group.