This page lists 9 cooling system parts for the 2026 Audi SQ8, across 6 part types, covering the 4.0L V8 Turbocharged engine. Every part shows its brand, manufacturer part number and fitment notes.
The cooling system system on the 2026 Audi SQ8 keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses. The largest groups are Coolant / Antifreeze (3 parts), Water Pump (2 parts) and Coolant Reservoir Cap (1 part). The other 3 part types cover the remaining 3 parts.
The 2026 Audi SQ8 came with a single engine, the 4.0L V8 Turbocharged, and every part is verified against it.
6 brands supply cooling system parts for the 2026 Audi SQ8, led by REIN (3 parts), PRESTONE (2 parts) and VALVOLINE (1 part), plus 3 more brands. Quality grades include Heavy Duty and Standard Replacement.
Each part number listed for the 2026 Audi SQ8 opens a page with every vehicle that part fits.
Coolant / Antifreeze
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE | AFC12100 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Command Nitrite Free Extended Life CoolantYellow Nitrite Free OAT | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE | 904683 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HT-12 Pink1 Gallon | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE | 78065 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Heavy Duty | View on Amazon |
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.
3 Coolant / Antifreeze parts are listed for the 2026 Audi SQ8, from PRESTONE and VALVOLINE.
The Heavy Duty section lists 1 option from PRESTONE — rated for severe service. PRESTONE AFC12100 is listed in this group.
The Standard Replacement section lists 1 option from VALVOLINE — built to original-equipment specification. VALVOLINE 904683 is listed in this group.
1 ungrouped part is not assigned to a grade, with the same engine-level match.
This group includes PRESTONE AFC12100, VALVOLINE 904683 and PRESTONE 78065.
Coolant Reservoir Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD | T111 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Standard | View on Amazon |
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.
This group shows a single part: MOTORAD T111.
Radiator Insulator Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN | AVM0730 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the Radiator Insulator sleeves.
This group shows a single part: REIN AVM0730.
Radiator Mount
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN | AVM0729 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Upper | View on Amazon |
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.
This group shows a single part: REIN AVM0729.
Temperature Sender / Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | TX275 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Attachment Method: Bolt On | View on Amazon |
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.
One part is listed for the 2026 Audi SQ8 — STANDARD MOTOR PRODUCTS TX275.
Water Pump
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 358304701 | 🇺🇸 US | Fits Engine CoolingAuxiliaryor HVAC System | View on Amazon |
| REIN | WPA0541 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits To RadiatorAuxiliaryor Heater | View on Amazon |
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.
2 Water Pump parts for the 2026 Audi SQ8 come from 2 brands — HELLA and REIN.
Listed part numbers: HELLA 358304701 and REIN WPA0541.
Buying Cooling System Parts for a 2026 Audi SQ8
On this vehicle, the cooling system system keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses.
- Confirm you have the 4.0L V8 Turbocharged engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Coolant / Antifreeze and Water Pump .
Frequently Asked Questions
How many cooling system parts fit the 2026 Audi SQ8?
Our catalog currently lists 9 cooling system parts for the 2026 Audi SQ8 across 6 subcategories and 6 brands, covering the 4.0L V8 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of cooling system problems on a 2026 Audi SQ8?
Common symptoms include a rising temperature gauge in traffic, sweet-smelling steam, crusty deposits around hose clamps, or a heater that blows cold. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace the thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2026 Audi SQ8 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2026 Audi SQ8?
Every part on this page is matched to the 4.0L V8 Turbocharged engine. Then replace coolant with the exact specification the manufacturer calls for — mixing chemistries can gel and block small passages. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2026 Audi SQ8
Cooling System Parts for Other Audi SQ8 Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.