2015 Audi S4 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

16 Coolant / Antifreeze parts for the 2015 Audi S4 come from 6 brands — PRESTONE, PEAK, PENTOSIN 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, 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, AISIN, PEAK and 1 other brand supply 6 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

7 Coolant Hose / Pipe parts for the 2015 Audi S4 come from 3 brands — REIN, SKP and VAICO. The "Popular" part is REIN CHE0705.

Part numbers include REIN CHE0705, REIN CHE0876 and REIN CHP0990, among others listed 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

One part is listed for the 2015 Audi S4 — DORMAN 47451.

This table covers the Coolant Hose Connector flanges. Read more

4 Coolant Hose Connector / Flange parts for the 2015 Audi S4 come from 4 brands — DORMAN, CALORSTAT, MOTORAD and 1 other brand.

The Economy section: 1 option from DORMAN. DORMAN 627000 is listed in this group.

Standard Replacement: 3 parts, from CALORSTAT, MOTORAD and SKP. A representative part number is CALORSTAT WF0151.

Part numbers include DORMAN 627000, CALORSTAT WF0151 and MOTORAD CH1106, 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 overflow / expansion tanks that hold extra coolant. Read more

6 Coolant Reservoir parts are listed for the 2015 Audi S4, from REIN, SKP, ÜRO PARTS and 2 other brands. SKP SK123227 carries the "Popular" badge.

Listed part numbers: SKP SK123227, ÜRO PARTS 8K0121405N and MAHLE / CLEVITE CRT169000S, 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

6 Coolant Reservoir Cap parts are listed for the 2015 Audi S4, from GATES, MOTORAD, CALORSTAT and 3 other brands. GATES 31529 carries the "Popular" badge.

This group includes GATES 31529, MOTORAD T49 and CALORSTAT RC0011 and the remaining parts above.

This table covers the Cooling Fan control modules. Read more

7 Cooling Fan Control Module parts are listed for the 2015 Audi S4, from US MOTOR WORKS, VNE, VEMO and 1 other brand. VEMO V10790027 carries the "Popular" badge.

Part numbers include VEMO V10790027, VNE 4010007 and ÜRO PARTS 8K0959501G, among others listed above.

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

4 Cooling System Tester Adapter parts for the 2015 Audi S4 come from 2 brands — GATES and MOTORAD.

Part numbers include GATES 31433, GATES 31434 and MOTORAD 3036, among others listed above.

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

This group shows a single part: NISSENS 96432.

This table covers the gaskets that seal the Intercooler. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

One part is listed for the 2015 Audi S4 — AJUSA 01260100.

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

21 Radiator parts for the 2015 Audi S4 come from 12 brands — MAHLE / CLEVITE, NISSENS, DENSO and 9 other brands. The "Popular" part is CSF 3519.

The Economy section: 1 option from GPD. GPD 13278 is listed in this group.

Standard Replacement: 20 parts, from MAHLE / CLEVITE, NISSENS, DENSO and 8 other brands. A representative part number is CSF 3519.

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

7 Radiator Fan Assembly parts are listed for the 2015 Audi S4, from GPD, NISSENS, SKP and 2 other brands. SKP SK620839 carries the "Popular" badge.

Economy: 3 parts, from GPD and SKP. A representative part number is SKP SK620839.

The Standard Replacement section: 4 options from NISSENS, TYC and VDO / CONTINENTAL. TYC 624630 is listed in this group.

Part numbers include SKP SK620839, GPD 2811880 and GPD 2812060, among others listed above.

This table covers the Radiator Fan motors. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor. Read more

4 Radiator Fan Motor parts for the 2015 Audi S4 come from VEMO.

Part numbers include VEMO V15011906, VEMO V10010001 and VEMO V10010003, among others listed 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

3 Radiator Hose parts are listed for the 2015 Audi S4, from GATES and REIN.

Part numbers include GATES 51501, GATES 24665 and REIN CHR0644.

This table covers the Radiator insulators. Read more

VNE supplies the 3 Radiator Insulator parts for the 2015 Audi S4.

Listed part numbers: VNE 41000034, VNE 41000078 and VNE 41000079.

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 S4.

This group includes REIN AVM0716 and REIN AVM0702.

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 for the 2015 Audi S4 come from 15 brands — STANDARD MOTOR PRODUCTS, HOLSTEIN, GPD and 12 other brands. The "Popular" part is HOLSTEIN 2CTS0490.

The Economy section: 6 options from HOLSTEIN, STANDARD MOTOR PRODUCTS, GPD and 3 other brands. HOLSTEIN 2CTS0490 is listed in this group.

Standard Replacement: 10 parts, from BECK/ARNLEY, STANDARD MOTOR PRODUCTS, DELPHI 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

7 Thermostat parts are listed for the 2015 Audi S4, from ÜRO PARTS, VEMO, GATES and 4 other brands. GATES 34839 carries the "Popular" badge.

Economy: 2 parts, from ÜRO PARTS and VEMO. A representative part number is ÜRO PARTS 06E121111AL.

The Standard Replacement section: 5 options from GATES, MOTORAD, CALORSTAT and 2 other brands. GATES 34839 is listed in this group.

This group includes GATES 34839, ÜRO PARTS 06E121111AL and VEMO V15992081 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

3 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2015 Audi S4 come from 3 brands — FEL-PRO, MAHLE / CLEVITE and VICTOR REINZ.

This group includes FEL-PRO 36194, MAHLE / CLEVITE C32539 and VICTOR REINZ 713905200.

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

One part is listed for the 2015 Audi S4 — VEMO V10990023.

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

13 Water Pump parts are listed for the 2015 Audi S4, from PIERBURG, SKP, BECK/ARNLEY and 7 other brands. SKP SK6033150 carries the "Popular" badge.

Economy: 3 parts, from SKP, BECK/ARNLEY and VAICO. A representative part number is SKP SK6033150.

The Standard Replacement section: 10 options from PIERBURG, GATES, GMB and 4 other brands. GATES 42420 is listed in this group.