The 2026 Genesis G80 has 9 cooling system parts with verified fitment on this page — 5 part types and 9 brands, covering both the 2.5L L4 Turbocharged and the 3.5L V6 Turbocharged. Each part includes a manufacturer part number and application notes.
The cooling system system on the 2026 Genesis G80 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 Water Pump (3 parts), Coolant / Antifreeze (2 parts) and Temperature Sender / Sensor (2 parts). The other 2 part types cover the remaining 2 parts.
The 2026 Genesis G80 was sold with both the 2.5L L4 Turbocharged and the 3.5L V6 Turbocharged. 2 parts fit every engine; the other 7 are engine-specific. Each part shows which engine(s) it fits.
9 brands supply cooling system parts for the 2026 Genesis G80, led by PENTOSIN (1 part), VALVOLINE (1 part) and MOTORAD (1 part), plus 6 more brands. Quality grades include Economy and Standard Replacement.
Each part number listed for the 2026 Genesis G80 opens a page with every vehicle that part fits.
Coolant / Antifreeze
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PENTOSIN Fits: all 2026 G80 engines | 8115209 | 🇺🇸 US 🇨🇦 CA | Pentofrost A41 Gallon | View on Amazon |
| VALVOLINE Fits: all 2026 G80 engines | 861398 | 🇺🇸 US 🇨🇦 CA | Asian Vehicle Blue1 Gallon | 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.
2 Coolant / Antifreeze parts are listed for the 2026 Genesis G80, from PENTOSIN and VALVOLINE. All of them fit every engine offered in the 2026 G80.
This group includes PENTOSIN 8115209 and VALVOLINE 861398.
Radiator Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Fits: 2.5L L4 Turbocharged | T20R | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
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.
One part is listed for the 2026 Genesis G80 — MOTORAD T20R.
Temperature Sender / Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD Fits: 2.5L L4 Turbocharged | 1816395 | 🇺🇸 US 🇨🇦 CA | Lower Front, Lower Right | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.5L L4 Turbocharged | TX337 | 🇺🇸 US 🇨🇦 CA | Located on Radiator | 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.
2 Temperature Sender / Sensor parts are listed for the 2026 Genesis G80, from GPD and STANDARD MOTOR PRODUCTS.
In the Economy grade, GPD supplies 1 part: the catalog's value-priced group. A representative part number is GPD 1816395.
The Standard Replacement section lists 1 option from STANDARD MOTOR PRODUCTS — built to original-equipment specification. STANDARD MOTOR PRODUCTS TX337 is listed in this group.
This group includes GPD 1816395 and STANDARD MOTOR PRODUCTS TX337.
Thermostat
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CALORSTAT Fits: 2.5L L4 Turbocharged | TH629482 | 🇺🇸 US 🇨🇦 CA | Does not include seal | View on Amazon |
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.
This group shows a single part: CALORSTAT TH629482.
Water Pump
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Fits: 2.5L L4 Turbocharged | US8213 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GMB Fits: 2.5L L4 Turbocharged | 1463040AH | 🇺🇸 US 🇨🇦 CA | Includes Housing | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| US MOTOR WORKS Fits: 2.5L L4 Turbocharged | US8213 | 🇺🇸 US 🇨🇦 CA | 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.
3 Water Pump parts for the 2026 Genesis G80 come from 3 brands — FVP, GMB and US MOTOR WORKS.
The Economy section: 1 option from FVP. FVP US8213 is listed in this group.
Standard Replacement: 1 part, from GMB. A representative part number is GMB 1463040AH.
1 further part sits outside the graded sections, with the same engine-level match.
Part numbers include FVP US8213 and GMB 1463040AH, among others listed above.
Buying Cooling System Parts for a 2026 Genesis G80
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.
- Match the engine first. Some cooling system parts fit every engine; others are engine-specific. Each row shows which engine(s) it fits.
- 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: Water Pump and Coolant / Antifreeze .
Frequently Asked Questions
How many cooling system parts fit the 2026 Genesis G80?
Our catalog currently lists 9 cooling system parts for the 2026 Genesis G80 across 5 subcategories and 9 brands, covering both the 2.5L L4 Turbocharged and the 3.5L V6 Turbocharged. Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 2026 Genesis G80 engines?
Some do. 2 parts fit every engine; the other 7 are engine-specific. Each row (and the filter at the top) shows which. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of cooling system problems on a 2026 Genesis G80?
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 Genesis G80 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 Genesis G80?
First match the engine — each row shows which engine(s) the part fits. 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 Genesis G80
Cooling System Parts for Other Genesis G80 Years
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