20 Cooling system parts are listed for the 2025 Mazda CX-90, in 5 part types, covering both the 2.5L L4 ELECTRIC/GAS and the 3.3L L6 Turbocharged. Each one has a brand, a manufacturer part number and notes that say where it fits.
The cooling system system on the 2025 Mazda CX-90 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 (9 parts), Radiator (5 parts) and Radiator Cap (2 parts). The other 2 part types cover the remaining 4 parts.
The 2025 Mazda CX-90 was sold with both the 2.5L L4 ELECTRIC/GAS and the 3.3L L6 Turbocharged. 13 parts fit every engine; the other 7 are engine-specific. Each part shows which engine(s) it fits.
10 brands supply cooling system parts for the 2025 Mazda CX-90, led by PRESTONE (6 parts), FVP (3 parts) and VALVOLINE (2 parts), plus 7 more brands. Quality grades include Standard Replacement, Premium and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2025 Mazda CX-90. 2 parts have it, including PRESTONE AF2100 (Coolant / Antifreeze) and VALVOLINE 861398 (Coolant / Antifreeze). Each part number opens a page with every vehicle that part fits.
Coolant / Antifreeze
Compatible With All Colors
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Fits: all 2025 CX-90 engines | AF3055 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Fits: all 2025 CX-90 engines | AF3100 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Prime Yellow - All VehiclesExtended Life | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Fits: all 2025 CX-90 engines | AFC12100 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Command Nitrite Free Extended Life CoolantYellow Nitrite Free OAT | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 2025 CX-90 engines | AF2100 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | All Vehicles10yr/300k mi | View on Amazon |
| PRESTONE Fits: all 2025 CX-90 engines | AF6610 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | MAX Asian Green1 Gallon | View on Amazon |
| PRESTONE Fits: all 2025 CX-90 engines | AFMAX | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: all 2025 CX-90 engines | 861398 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Asian Vehicle Blue1 Gallon | View on Amazon |
| PENTOSIN Fits: all 2025 CX-90 engines | 8115207 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Pentofrost A31 Gallon | View on Amazon |
| VALVOLINE Fits: all 2025 CX-90 engines | 888418 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Asian Vehicle Green1 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.
9 Coolant / Antifreeze parts are listed for the 2025 Mazda CX-90, from PRESTONE, VALVOLINE and PENTOSIN. PRESTONE AF2100 carries the "Popular" badge. All of them fit every engine offered in the 2025 CX-90.
The Compatible With All Colors section lists 1 option from PRESTONE — grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. PRESTONE AF3055 is listed in this group.
In the Economy grade, PRESTONE supplies 1 part: the catalog's value-priced group. A representative part number is PRESTONE AF3100.
The Heavy Duty section lists 1 option from PRESTONE — rated for severe service. PRESTONE AFC12100 is listed in this group.
The Premium section lists 3 options from PRESTONE — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.
The Standard Replacement section lists 3 options from VALVOLINE and PENTOSIN — built to original-equipment specification. VALVOLINE 861398 is listed in this group.
Part numbers include PRESTONE AF2100, PRESTONE AF3055 and PRESTONE AF3100, among others listed above.
Radiator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Fits: 2.5L L4 ELECTRIC/GAS | RAD14017 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FVP Fits: 3.3L L6 Turbocharged | RAD14016 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Main Radiatorwithout Auxiliary Radiator | View on Amazon |
| FVP Fits: 3.3L L6 Turbocharged | RAD14035 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Main Radiatorwith Auxiliary Radiator | View on Amazon |
| KOYORAD Fits: 2.5L L4 ELECTRIC/GAS | A14017 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| KOYORAD Fits: 3.3L L6 Turbocharged | A14016 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
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.
5 Radiator parts are listed for the 2025 Mazda CX-90, from FVP and KOYORAD.
Listed part numbers: FVP RAD14017, FVP RAD14016 and FVP RAD14035, plus the other parts above.
Radiator Cap
Locking Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Fits: all 2025 CX-90 engines | ST16R | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Safety LeverIndicator Markings Color: Blue, Red | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Fits: all 2025 CX-90 engines | T16R | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | StandardIndicator Markings Color: Silver | 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.
MOTORAD supplies both parts for the 2025 Mazda CX-90. All of them fit every engine offered in the 2025 CX-90.
The Locking Replacement section lists 1 option from MOTORAD — grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. MOTORAD ST16R is listed in this group.
The Standard Replacement section: 1 option from MOTORAD. MOTORAD T16R is listed in this group.
Part numbers include MOTORAD ST16R and MOTORAD T16R.
Radiator Fan Assembly
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TECHPRO Fits: all 2025 CX-90 engines | MA3115178 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TYC Fits: all 2025 CX-90 engines | 625780 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator.
2 Radiator Fan Assembly parts for the 2025 Mazda CX-90 come from 2 brands — TECHPRO and TYC. Every part fits both the 2.5L L4 ELECTRIC/GAS and the 3.3L L6 Turbocharged.
The Economy section: 1 option from TECHPRO. TECHPRO MA3115178 is listed in this group.
Standard Replacement: 1 part, from TYC. A representative part number is TYC 625780.
This group includes TECHPRO MA3115178 and TYC 625780.
Thermostat / Thermostat Housing / Water Outlet Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Fits: 2.5L L4 ELECTRIC/GAS | 36215 | 🇺🇸 US 🇨🇦 CA | Water Outlet Seal | View on Amazon |
| MAHLE / CLEVITE Fits: 2.5L L4 ELECTRIC/GAS | C33693 | 🇺🇸 US 🇨🇦 CA | Molded Rubber | View on Amazon |
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.
2 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2025 Mazda CX-90, from FEL-PRO and MAHLE / CLEVITE.
Listed part numbers: FEL-PRO 36215 and MAHLE / CLEVITE C33693.
Buying Cooling System Parts for a 2025 Mazda CX-90
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: Coolant / Antifreeze and Radiator .
Frequently Asked Questions
How many cooling system parts fit the 2025 Mazda CX-90?
Our catalog currently lists 20 cooling system parts for the 2025 Mazda CX-90 across 5 subcategories and 10 brands, covering both the 2.5L L4 ELECTRIC/GAS and the 3.3L L6 Turbocharged. Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 2025 Mazda CX-90 engines?
Some do. 13 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 2025 Mazda CX-90?
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 Mazda CX-90 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 Mazda CX-90?
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 Mazda CX-90
Cooling System Parts for Other Mazda CX-90 Years
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