2015 Audi S8 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 2015 Audi S8 come from 6 brands — PRESTONE, PEAK, VALVOLINE and 3 other brands. The "Popular" part is FVP MV5050GAL.

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, PEAK 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 VALVOLINE 861399.

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 2015 Audi S8, from ELRING, DORMAN, FEL-PRO and 1 other brand. DORMAN 47451 carries the "Popular" badge.

Part numbers include DORMAN 47451, ELRING 793110 and ELRING 748870, among others listed above.

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 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

4 Coolant Reservoir Cap parts are listed for the 2015 Audi S8, from CALORSTAT, MOTORAD, REIN and 1 other brand.

Listed part numbers: CALORSTAT RC0162, MOTORAD T49 and REIN CPE0039, plus the other parts above.

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

2 Cooling System Tester Adapter parts for the 2015 Audi S8 come from MOTORAD.

Part numbers include MOTORAD 3036 and MOTORAD 3037.

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

This group shows a single part: MAHLE / CLEVITE CI642000P.

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

3 Radiator parts for the 2015 Audi S8 come from 2 brands — NISSENS and GPD.

The Economy section: 1 option from GPD. GPD 13795C is listed in this group.

Standard Replacement: 2 parts, from NISSENS. A representative part number is NISSENS 60359.

Part numbers include GPD 13795C, NISSENS 60359 and NISSENS 60326.

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

VEMO supplies the 3 Radiator Fan Assembly parts for the 2015 Audi S8.

This group includes VEMO V15011929, VEMO V15011930 and VEMO V15011955.

This table covers the Radiator insulators. Read more

VNE supplies the 3 Radiator Insulator parts for the 2015 Audi S8.

Listed part numbers: VNE 41000034, VNE 41000036 and VNE 41000078.

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

REIN supplies both parts for the 2015 Audi S8.

Listed part numbers: REIN AVM0702 and REIN AVM0742.

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

24 Temperature Sender / Sensor parts for the 2015 Audi S8 come from 16 brands — STANDARD MOTOR PRODUCTS, HOLSTEIN, GPD and 13 other brands. The "Popular" part is HOLSTEIN 2CTS0490.

The Economy section: 10 options from HOLSTEIN, GPD, VEMO and 4 other brands. HOLSTEIN 2CTS0490 is listed in this group.

Standard Replacement: 14 parts, from BECK/ARNLEY, STANDARD MOTOR PRODUCTS, FACET and 7 other brands. A representative part number is BECK/ARNLEY 1580784.

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

4 Thermostat parts are listed for the 2015 Audi S8, from ÜRO PARTS, CALORSTAT, MOTORAD and 1 other brand.

Economy: 1 part, from ÜRO PARTS. A representative part number is ÜRO PARTS 079121115BL.

The Standard Replacement section: 3 options from CALORSTAT, MOTORAD and REIN. CALORSTAT TE719497J is listed in this group.

Part numbers include ÜRO PARTS 079121115BL, CALORSTAT TE719497J and MOTORAD 958207, among others listed above.

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 are listed for the 2015 Audi S8, from PIERBURG, FOUR SEASONS, NISSENS and 2 other brands. FOUR SEASONS 89109 carries the "Popular" badge.

Economy: 1 part, from CARDONE. A representative part number is CARDONE 5W4010.

The Standard Replacement section: 8 options from PIERBURG, FOUR SEASONS, NISSENS and 1 other brand. FOUR SEASONS 89109 is listed in this group.

Part numbers include FOUR SEASONS 89109, CARDONE 5W4010 and PIERBURG 701713270, among others listed above.