This page lists 21 cooling system parts for the 2021 Toyota Yaris, across 4 part types, covering both the 1.5L L4 and the 1.6L L3 Turbocharged. Every part shows its brand, manufacturer part number and fitment notes.
On the 2021 Toyota Yaris, 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. 20 parts of the 21 listed are Coolant / Antifreeze (13 parts), Water Pump (4 parts) and Temperature Sender / Sensor (3 parts). The other 1 part type covers the remaining 1 part.
The 2021 Toyota Yaris was sold with both the 1.5L L4 and the 1.6L L3 Turbocharged. 9 parts fit every engine; the other 12 are engine-specific. Each part shows which engine(s) it fits.
11 brands supply cooling system parts for the 2021 Toyota Yaris, led by PRESTONE (4 parts), PEAK (4 parts) and AISIN (4 parts), plus 8 more brands. Quality grades include Standard Replacement, Economy and Premium.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2021 Toyota Yaris. 4 parts have it, including PRESTONE AF3100 (Coolant / Antifreeze) and VALVOLINE 719009 (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 2021 Yaris engines | AF3055 | 🇲🇽 MX | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 2021 Yaris engines | AF3100 | 🇲🇽 MX | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| VALVOLINE Popular Fits: all 2021 Yaris engines | 719009 | 🇲🇽 MX | Multi-Vehicle Yellow1 Gallon | View on Amazon |
| PEAK Fits: all 2021 Yaris engines | BQA1GAL | 🇲🇽 MX | Blue Mountain Long LifeAll Vehicle | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 2021 Yaris engines | AF2100 | 🇲🇽 MX | All Vehicles10yr/300k mi | View on Amazon |
| PEAK Fits: all 2021 Yaris engines | PKP1GAL | 🇲🇽 MX | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK Fits: all 2021 Yaris engines | PXA1GAL | 🇲🇽 MX | Global Lifetime1 Gallon | View on Amazon |
| PRESTONE Fits: all 2021 Yaris engines | AFMAX | 🇲🇽 MX | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AISIN Popular Fits: 1.6L L3 Turbocharged | ACT002 | 🇲🇽 MX | PinkHOAT | View on Amazon |
| AISIN Fits: 1.5L L4 | ACG004 | 🇲🇽 MX | GreenPOAT | View on Amazon |
| AISIN Fits: 1.6L L3 Turbocharged | ACT002C | 🇲🇽 MX | Pink - Canada OnlyHOAT | View on Amazon |
| PEAK Fits: all 2021 Yaris engines | PAR1GAL | 🇲🇽 MX | OET Asian Extended Life Red1 Gallon | View on Amazon |
| PENTOSIN Fits: 1.5L L4 | 8115207 | 🇲🇽 MX | Pentofrost A31 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.
13 Coolant / Antifreeze parts are listed for the 2021 Toyota Yaris, from PRESTONE, PEAK, AISIN and 2 other brands. PRESTONE AF3100 carries the "Popular" badge. 9 parts fit every engine; the other 4 are engine-specific.
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, VALVOLINE and PEAK supply 3 parts: the catalog's value-priced group. A representative part number is PRESTONE AF3100.
The Premium section lists 4 options from PRESTONE and PEAK — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.
The Standard Replacement section lists 5 options from AISIN, PEAK and PENTOSIN — built to original-equipment specification. AISIN ACT002 is listed in this group.
Radiator Fan Assembly
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 1.5L L4 | 621568 | 🇲🇽 MX | View on Amazon |
This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator.
This group shows a single part: DORMAN 621568.
Temperature Sender / Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: 1.5L L4 | 2CTS0016 | 🇲🇽 MX | Connector Shape: Rectangular | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 1.5L L4 | D583 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 1.5L L4 | TX40 | 🇲🇽 MX | Rectangular Connector2 Terminal | 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.
3 Temperature Sender / Sensor parts are listed for the 2021 Toyota Yaris, from HOLSTEIN, ACDELCO and STANDARD MOTOR PRODUCTS.
Economy: 1 part, from HOLSTEIN. A representative part number is HOLSTEIN 2CTS0016.
The Standard Replacement section: 2 options from ACDELCO and STANDARD MOTOR PRODUCTS. ACDELCO D583 is listed in this group.
Listed part numbers: HOLSTEIN 2CTS0016, ACDELCO D583 and STANDARD MOTOR PRODUCTS TX40.
Water Pump
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AISIN Fits: 1.5L L4 | WPZ045 | 🇲🇽 MX | without Housing ULTRA-Premium OE Replacement | View on Amazon |
| FVP Fits: 1.5L L4 | 1452530 | 🇲🇽 MX | Mounting Hardware Included: YES | View on Amazon |
| FVP Fits: 1.5L L4 | US8222 | 🇲🇽 MX | View on Amazon | |
| US MOTOR WORKS Fits: 1.5L L4 | US8222 | 🇲🇽 MX | 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.
4 Water Pump parts for the 2021 Toyota Yaris come from 3 brands — FVP, AISIN and US MOTOR WORKS.
Part numbers include AISIN WPZ045, FVP 1452530 and FVP US8222, among others listed above.
Buying Cooling System Parts for a 2021 Toyota Yaris
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 Water Pump .
Frequently Asked Questions
How many cooling system parts fit the 2021 Toyota Yaris?
Our catalog currently lists 21 cooling system parts for the 2021 Toyota Yaris across 4 subcategories and 11 brands, covering both the 1.5L L4 and the 1.6L L3 Turbocharged. Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 2021 Toyota Yaris engines?
Some do. 9 parts fit every engine; the other 12 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 2021 Toyota Yaris?
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 2021 Toyota Yaris 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 2021 Toyota Yaris?
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 2021 Toyota Yaris
Cooling System Parts for Other Toyota Yaris 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.