This page lists 5 cooling system parts for the 2026 Mazda CX-70, across 1 part type, covering both the 2.5L L4 ELECTRIC/GAS and the 3.3L L6 Turbocharged. Every part shows its brand, manufacturer part number and fitment notes.
On the 2026 Mazda CX-70, 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. Every listed part is Coolant / Antifreeze.
The 2026 Mazda CX-70 was sold with both the 2.5L L4 ELECTRIC/GAS and the 3.3L L6 Turbocharged. All 5 parts on this page fit every engine.
The most listed brands for 2026 Mazda CX-70 cooling system parts are PRESTONE (2 parts), VALVOLINE (2 parts) and PENTOSIN (1 part). Quality grades include Standard Replacement and Heavy Duty.
1 part on this 2026 Mazda CX-70 page carries a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — VALVOLINE 861398 (Coolant / Antifreeze). Click any part number to see every vehicle that part fits.
Coolant / Antifreeze
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Fits: all 2026 CX-70 engines | 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 Popular Fits: all 2026 CX-70 engines | 861398 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Asian Vehicle Blue1 Gallon | View on Amazon |
| PENTOSIN Fits: all 2026 CX-70 engines | 8115207 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Pentofrost A31 Gallon | View on Amazon |
| VALVOLINE Fits: all 2026 CX-70 engines | 888418 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Asian Vehicle Green1 Gallon | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Fits: all 2026 CX-70 engines | 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.
5 Coolant / Antifreeze parts for the 2026 Mazda CX-70 come from 3 brands — PRESTONE, VALVOLINE and PENTOSIN. The "Popular" part is VALVOLINE 861398. Every part fits both the 2.5L L4 ELECTRIC/GAS and the 3.3L L6 Turbocharged.
In the Heavy Duty grade, PRESTONE supplies 1 part: rated for severe service. A representative part number is PRESTONE AFC12100.
In the Standard Replacement grade, VALVOLINE and PENTOSIN supply 3 parts: built to original-equipment specification. A representative part number is VALVOLINE 861398.
1 further part sits outside the graded sections, with the same engine-level match.
This group includes VALVOLINE 861398, PRESTONE AFC12100 and PENTOSIN 8115207 and the remaining parts above.
Buying Cooling System Parts for a 2026 Mazda CX-70
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.
- You do not need to pick an engine: every cooling system part on this page fits both the 2.5L L4 ELECTRIC/GAS and the 3.3L L6 Turbocharged.
- 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 .
Frequently Asked Questions
How many cooling system parts fit the 2026 Mazda CX-70?
Our catalog currently lists 5 cooling system parts for the 2026 Mazda CX-70 across 1 subcategory and 3 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 2026 Mazda CX-70 engines?
No. On this page every cooling system part fits both the 2.5L L4 ELECTRIC/GAS and the 3.3L L6 Turbocharged. You do not need to pick an engine to choose the right row — use the notes for position and trim.
What are the signs of cooling system problems on a 2026 Mazda CX-70?
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 Mazda CX-70 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 Mazda CX-70?
Every part on this page already fits both the 2.5L L4 ELECTRIC/GAS and the 3.3L L6 Turbocharged. 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 Mazda CX-70
Cooling System Parts for Other Mazda CX-70 Years
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