2018 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

17 Coolant / Antifreeze parts for the 2018 Audi TT come from 6 brands — PRESTONE, PEAK, VALVOLINE and 3 other brands. The "Popular" part is FVP MV5050GAL. 14 parts fit every engine; the other 3 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 4 options from FVP, PRESTONE, VALVOLINE and 1 other brand — the catalog's value-priced group. FVP MV5050GAL 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, PENTOSIN, VALVOLINE, AISIN and 1 other brand supply 7 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

6 Coolant Hose / Pipe parts for the 2018 Audi TT come from 3 brands — VAICO, REIN and SKP. The "Popular" part is REIN CHP0663.

This group includes REIN CHP0663, REIN CHP0793 and SKP SK121468 and the remaining parts above.

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

5 Coolant Hose / Pipe Seal parts are listed for the 2018 Audi TT, from AJUSA, DORMAN, FEL-PRO and 1 other brand. 1 part fits every engine; the other 4 are engine-specific.

Part numbers include AJUSA 16098500, AJUSA 01165600 and DORMAN 47451, among others listed above.

This table covers the Coolant Hose Connector flanges. Read more

13 Coolant Hose Connector / Flange parts for the 2018 Audi TT come from 6 brands — VAICO, REIN, ÜRO PARTS and 3 other brands. The "Popular" part is DORMAN 627006.

The Economy section: 2 options from DORMAN and SKP. DORMAN 627006 is listed in this group.

Standard Replacement: 9 parts, from VAICO, REIN and MOTORAD. A representative part number is MOTORAD CH8016.

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

This table covers the Coolant Hose Flange plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes. Read more

This group shows a single part: ÜRO PARTS 357121140.

This table covers the Coolant Hose retainers and clips. Read more

This group shows a single part: BECK/ARNLEY 1470039.

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

5 Coolant Reservoir parts are listed for the 2018 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

5 Coolant Reservoir Cap parts are listed for the 2018 Audi TT, from MOTORAD, CALORSTAT, GATES and 1 other brand. 1 part fits every engine; the other 4 are engine-specific.

This group includes CALORSTAT RC0162, GATES 31529 and MOTORAD T49 and the remaining parts above.

This table covers the adapters used to pressure-test this cooling system. Read more

4 Cooling System Tester Adapter parts for the 2018 Audi TT come from 2 brands — GATES and MOTORAD.

This group includes GATES 31433, GATES 31434 and MOTORAD 3036 and the remaining parts above.

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

7 Intercooler parts for the 2018 Audi TT come from 7 brands — NISSENS, TYC, CSF and 4 other brands. The "Popular" part is NISSENS 96494.

This group includes NISSENS 96494, TYC 18128 and CSF 6100 and the remaining parts above.

This table covers the Intercooler Air Hose pipes. Read more

7 Intercooler Air Hose / Pipe parts for the 2018 Audi TT come from 3 brands — GATES, VAICO and REIN. The "Popular" part is GATES 26475.

Listed part numbers: GATES 26475, GATES 26491 and GATES 26474, 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

REIN supplies both parts for the 2018 Audi TT.

This group includes REIN AVM0728 and REIN AVM0696.

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

11 Radiator parts for the 2018 Audi TT come from 8 brands — NISSENS, MAHLE / CLEVITE, CSF and 5 other brands. The "Popular" part is CSF 3922.

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

9 Radiator Fan Assembly parts are listed for the 2018 Audi TT, from GPD, TECHPRO, NISSENS and 3 other brands. AGILITY 6010318 carries the "Popular" badge.

Economy: 3 parts, from GPD and TECHPRO. A representative part number is GPD 2812046.

The Standard Replacement section: 4 options from NISSENS, AGILITY and UAC. AGILITY 6010318 is listed in this group.

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

Listed part numbers: AGILITY 6010318, GPD 2812046 and GPD 2812297, plus the other parts above.

This table covers the Radiator 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

3 Radiator Mount parts are listed for the 2018 Audi TT, from VNE and REIN.

Part numbers include REIN AVM0728, VNE 41000012 and VNE 41000038.

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

14 Temperature Sender / Sensor parts for the 2018 Audi TT come from 13 brands — STANDARD MOTOR PRODUCTS, GPD, HOLSTEIN and 10 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS TS608T.

The Economy section: 5 options from STANDARD MOTOR PRODUCTS, GPD, HOLSTEIN and 2 other brands. STANDARD MOTOR PRODUCTS TS608T is listed in this group.

Standard Replacement: 9 parts, from BECK/ARNLEY, STANDARD MOTOR PRODUCTS, DELPHI and 6 other brands. A representative part number is BECK/ARNLEY 1580784.

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 2018 Audi TT come from 2 brands — AJUSA and ELRING.

Part numbers include AJUSA 16502300 and ELRING 453710.

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

2 Thermostat Housing / Water Outlet parts are listed for the 2018 Audi TT, from BECK/ARNLEY and GATES.

Listed part numbers: BECK/ARNLEY 1470096 and GATES CO34883.

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

One part is listed for the 2018 Audi TT — PIERBURG 708002010.