The 2025 Kia K5 has 27 cooling system parts with verified fitment on this page — 5 part types and 13 brands, covering both the 2.5L L4 and the 2.5L L4 Turbocharged. Each part includes a manufacturer part number and application notes.
The cooling system system on the 2025 Kia K5 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 (9 parts), Coolant / Antifreeze (6 parts) and Temperature Sender / Sensor (6 parts). The other 2 part types cover the remaining 6 parts.
The 2025 Kia K5 was sold with both the 2.5L L4 and the 2.5L L4 Turbocharged. 9 parts fit every engine; the other 18 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2025 Kia K5 cooling system parts are PRESTONE (4 parts), FVP (4 parts) and GMB (4 parts), plus 10 more brands. Quality grades include Standard Replacement, Economy and Premium.
3 parts on this 2025 Kia K5 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including PRESTONE AF2100 (Coolant / Antifreeze) and AISIN WPK832 (Water Pump). Click any part number to see every vehicle that part fits.
Coolant / Antifreeze
Compatible With All Colors
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Fits: all 2025 K5 engines | AF3055 | 🇺🇸 US | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Fits: all 2025 K5 engines | AF3100 | 🇺🇸 US | Prime Yellow - All VehiclesExtended Life | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 2025 K5 engines | AF2100 | 🇺🇸 US | All Vehicles10yr/300k mi | View on Amazon |
| PRESTONE Fits: all 2025 K5 engines | AFMAX | 🇺🇸 US | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: all 2025 K5 engines | 861398 | 🇺🇸 US | Asian Vehicle Blue1 Gallon | View on Amazon |
| PENTOSIN Fits: all 2025 K5 engines | 8115209 | 🇺🇸 US | Pentofrost A41 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.
6 Coolant / Antifreeze parts for the 2025 Kia K5 come from 3 brands — PRESTONE, VALVOLINE and PENTOSIN. The "Popular" part is PRESTONE AF2100. Every part fits both the 2.5L L4 and the 2.5L L4 Turbocharged.
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 1 option from PRESTONE — the catalog's value-priced group. PRESTONE AF3100 is listed in this group.
In the Premium grade, PRESTONE supplies 2 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.
In the Standard Replacement grade, VALVOLINE and PENTOSIN supply 2 parts: built to original-equipment specification. A representative part number is VALVOLINE 861398.
Part numbers include PRESTONE AF2100, PRESTONE AF3055 and PRESTONE AF3100, among others listed above.
Radiator Fan Assembly
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER Fits: 2.5L L4 | 624790 | 🇺🇸 US 🇨🇦 CA | RightDoor Mirror | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TYC Fits: 2.5L L4 | 624790 | 🇺🇸 US | View on Amazon | |
| VDO / CONTINENTAL Fits: 2.5L L4 | FA74068 | 🇺🇸 US | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TYC Fits: 2.5L L4 Turbocharged | 625580 | 🇺🇸 US | View on Amazon | |
| VDO / CONTINENTAL Fits: 2.5L L4 Turbocharged | FA74068 | 🇺🇸 US | View on Amazon |
This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator.
5 Radiator Fan Assembly parts are listed for the 2025 Kia K5, from TYC, VDO / CONTINENTAL and ULTRA-POWER.
Economy: 1 part, from ULTRA-POWER. A representative part number is ULTRA-POWER 624790.
The Standard Replacement section: 2 options from TYC and VDO / CONTINENTAL. TYC 624790 is listed in this group.
2 ungrouped parts are not assigned to a grade, with the same engine-level match.
Part numbers include ULTRA-POWER 624790 and VDO / CONTINENTAL FA74068, among others listed above.
Temperature Sender / Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD Fits: 2.5L L4 Turbocharged | 1816627 | 🇺🇸 US | Thermostat Housing | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.5L L4 Turbocharged | TX337 | 🇺🇸 US | Water Pump | View on Amazon |
| WELLS Fits: 2.5L L4 Turbocharged | 5S17563 | 🇺🇸 US | Located in Block | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2025 K5 engines | TX363 | 🇺🇸 US | Located On Side Of Thermostat Housing | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.5L L4 | TX337 | 🇺🇸 US | Water Pump | View on Amazon |
| WELLS Fits: 2.5L L4 | 5S17563 | 🇺🇸 US | Located in Block | 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.
6 Temperature Sender / Sensor parts for the 2025 Kia K5 come from 3 brands — STANDARD MOTOR PRODUCTS, WELLS and GPD. 1 part fits every engine; the other 5 are engine-specific.
The Economy section: 1 option from GPD. GPD 1816627 is listed in this group.
Standard Replacement: 2 parts, from STANDARD MOTOR PRODUCTS and WELLS. A representative part number is STANDARD MOTOR PRODUCTS TX337.
3 further parts sit outside the graded sections, with the same engine-level match.
Part numbers include GPD 1816627, STANDARD MOTOR PRODUCTS TX337 and WELLS 5S17563, among others listed above.
Thermostat
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Fits: all 2025 K5 engines | SKTA9250 | 🇺🇸 US | Includes Thermostat/Control Valve, Housing, Sensor and 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.
One part is listed for the 2025 Kia K5 — SKP SKTA9250.
Water Pump
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AISIN Popular Fits: all 2025 K5 engines | WPK832 | 🇺🇸 US | View on Amazon | |
| FVP Fits: 2.5L L4 | 1463010 | 🇺🇸 US | Pump Only | View on Amazon |
| FVP Fits: 2.5L L4 | 1463010AH | 🇺🇸 US | Includes Housing | View on Amazon |
| FVP Fits: 2.5L L4 Turbocharged | 1463040 | 🇺🇸 US | Pump Only | View on Amazon |
| FVP Fits: 2.5L L4 Turbocharged | 1463040AH | 🇺🇸 US | Includes Housing | View on Amazon |
| GMB Fits: 2.5L L4 | 1463010 | 🇺🇸 US | Pump Only | View on Amazon |
| GMB Fits: 2.5L L4 | 1463010AH | 🇺🇸 US | Includes Housing | View on Amazon |
| GMB Fits: 2.5L L4 Turbocharged | 1463040 | 🇺🇸 US | Pump Only | View on Amazon |
| GMB Fits: 2.5L L4 Turbocharged | 1463040AH | 🇺🇸 US | Includes Housing | 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.
9 Water Pump parts are listed for the 2025 Kia K5, from FVP, GMB and AISIN. AISIN WPK832 carries the "Popular" badge. 1 part fits every engine; the other 8 are engine-specific.
This group includes AISIN WPK832, FVP 1463010 and FVP 1463010AH and the remaining parts above.
Buying Cooling System Parts for a 2025 Kia K5
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 2025 Kia K5?
Our catalog currently lists 27 cooling system parts for the 2025 Kia K5 across 5 subcategories and 13 brands, covering both the 2.5L L4 and the 2.5L L4 Turbocharged. Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 2025 Kia K5 engines?
Some do. 9 parts fit every engine; the other 18 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 2025 Kia K5?
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 2025 Kia K5 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 2025 Kia K5?
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 2025 Kia K5
Cooling System Parts for Other Kia K5 Years
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