2017 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

18 Coolant / Antifreeze parts are listed for the 2017 Audi TT, from PRESTONE, VALVOLINE, PEAK and 3 other brands. FVP MV5050GAL carries the "Popular" badge. 12 parts fit every engine; the other 6 are 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, FVP, PRESTONE, VALVOLINE and 1 other brand supply 4 parts: the catalog's value-priced group. A representative part number is FVP MV5050GAL.

The Heavy Duty section lists 1 option from VALVOLINE — rated for severe service. VALVOLINE 846439 is listed in this group.

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 7 options from PENTOSIN, VALVOLINE, AISIN and 1 other brand — 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

6 Coolant Hose / Pipe parts are listed for the 2017 Audi TT, from VAICO, REIN and SKP. REIN CHP0663 carries the "Popular" badge.

Listed part numbers: REIN CHP0663, REIN CHP0793 and SKP SK121468, plus the other 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

4 Coolant Hose / Pipe Seal parts for the 2017 Audi TT come from 4 brands — AJUSA, DORMAN, FEL-PRO and 1 other brand. 1 part fits every engine; the other 3 are engine-specific.

Part numbers include AJUSA 16098500, DORMAN 47451 and FEL-PRO 36130, among others listed above.

This table covers the Coolant Hose Connector flanges. Read more

10 Coolant Hose Connector / Flange parts are listed for the 2017 Audi TT, from VAICO, REIN and ÜRO PARTS. ÜRO PARTS 5Q0122291DA carries the "Popular" badge.

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

One part is listed for the 2017 Audi TT — ÜRO PARTS 357121140.

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

One part is listed for the 2017 Audi TT — BECK/ARNLEY 1470039.

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

7 Coolant Reservoir parts for the 2017 Audi TT come from 6 brands — TECHPRO, REIN, ÜRO PARTS and 3 other brands. The "Popular" part is REIN EPT0142. 2 parts fit every engine; the other 5 are engine-specific.

Listed part numbers: REIN EPT0142, ÜRO PARTS 5Q0121407T and HELLA 366365551, 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 for the 2017 Audi TT come from 3 brands — CALORSTAT, MOTORAD and REIN. 1 part fits every engine; the other 2 are engine-specific.

Part numbers include CALORSTAT RC0162, MOTORAD T49 and REIN CPE0039.

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

MOTORAD supplies both parts for the 2017 Audi TT.

Listed part numbers: MOTORAD 3036 and MOTORAD 3037.

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

7 Intercooler parts are listed for the 2017 Audi TT, from NISSENS, TYC, CSF and 4 other brands. NISSENS 96494 carries the "Popular" badge. 2 parts fit every engine; the other 5 are engine-specific.

Part numbers include NISSENS 96494, TYC 18128 and CSF 6100, among others listed above.

This table covers the Intercooler Air Hose pipes. Read more

5 Intercooler Air Hose / Pipe parts are listed for the 2017 Audi TT, from GATES and VAICO. GATES 26475 carries the "Popular" badge.

Part numbers include GATES 26475, GATES 26491 and GATES 26474, among others listed 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

2 Intercooler Mount parts for the 2017 Audi TT come from REIN.

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

12 Radiator parts are listed for the 2017 Audi TT, from NISSENS, MAHLE / CLEVITE, CSF and 6 other brands. CSF 3922 carries the "Popular" badge. 3 parts fit every engine; the other 9 are engine-specific.

This table covers the caps that hold system pressure at the radiator or reservoir neck. 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

One part is listed for the 2017 Audi TT — VAICO V100890.

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

6 Radiator Fan Assembly parts for the 2017 Audi TT come from 6 brands — GPD, VEMO, AGILITY and 3 other brands. The "Popular" part is AGILITY 6010318.

The Economy section: 2 options from GPD and VEMO. GPD 2812046 is listed in this group.

Standard Replacement: 3 parts, from AGILITY, NISSENS and UAC. A representative part number is AGILITY 6010318.

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

This group includes AGILITY 6010318, GPD 2812046 and VEMO V15011913 and the remaining parts above.

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

4 Radiator Hose parts for the 2017 Audi TT come from 3 brands — REIN, DAYCO and GATES.

Listed part numbers: DAYCO 73068, GATES 51824 and REIN CHR0773, 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

2 Radiator Mount parts for the 2017 Audi TT come from VNE.

Part numbers include 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

16 Temperature Sender / Sensor parts are listed for the 2017 Audi TT, from STANDARD MOTOR PRODUCTS, VNE, HOLSTEIN and 11 other brands. HOLSTEIN 2CTS0490 carries the "Popular" badge. 8 parts fit every engine; the other 8 are engine-specific.

Economy: 6 parts, from HOLSTEIN, STANDARD MOTOR PRODUCTS, GPD and 3 other brands. A representative part number is HOLSTEIN 2CTS0490.

The Standard Replacement section: 10 options from VNE, BECK/ARNLEY, STANDARD MOTOR PRODUCTS and 6 other brands. BECK/ARNLEY 1580784 is listed in this group.

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

5 Thermostat parts for the 2017 Audi TT come from 5 brands — VEMO, MOTORAD, BECK/ARNLEY and 2 other brands. The "Popular" part is MOTORAD 838235.

The Economy section: 1 option from VEMO. VEMO V15992107 is listed in this group.

Standard Replacement: 4 parts, from MOTORAD, BECK/ARNLEY, CALORSTAT and 1 other brand. A representative part number is MOTORAD 838235.

This group includes MOTORAD 838235, VEMO V15992107 and BECK/ARNLEY 1430913 and the remaining parts above.

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

9 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2017 Audi TT, from FEL-PRO, MAHLE / CLEVITE, FACET and 3 other brands. FEL-PRO 35924 carries the "Popular" badge. 1 part fits every engine; the other 8 are engine-specific.

Listed part numbers: FEL-PRO 35924, MAHLE / CLEVITE 72622 and AJUSA 16502300, plus the other parts above.

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

2 Thermostat Housing / Water Outlet parts for the 2017 Audi TT come from 2 brands — GATES and MOTORAD.

Listed part numbers: GATES CO34954 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

18 Water Pump parts for the 2017 Audi TT come from 11 brands — PIERBURG, BECK/ARNLEY, FOUR SEASONS and 8 other brands. The "Popular" part is BECK/ARNLEY 1312517.

The Economy section: 6 options from BECK/ARNLEY, SKP, US MOTOR WORKS and 2 other brands. BECK/ARNLEY 1312517 is listed in this group.

Standard Replacement: 12 parts, from PIERBURG, FOUR SEASONS, GRAF and 3 other brands. A representative part number is GMB 1803050.