This page lists 18 cooling system parts for the 2021 Chevrolet Onix, across 4 part types, covering the 1.2L L3 Turbocharged engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 2021 Chevrolet Onix, 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. Most of the listed parts are Coolant / Antifreeze (11 parts), Water Pump (4 parts) and Temperature Sender / Sensor (2 parts). The other 1 part type covers the remaining 1 part.
The 2021 Chevrolet Onix came with a single engine, the 1.2L L3 Turbocharged, and every part is verified against it.
10 brands supply cooling system parts for the 2021 Chevrolet Onix, led by PRESTONE (4 parts), PEAK (3 parts) and VALVOLINE (3 parts), plus 7 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 Chevrolet Onix. 3 parts have it, including PRESTONE AF2100 (Coolant / Antifreeze) and VALVOLINE 888374 (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 | AF3055 | 🇲🇽 MX | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PEAK | BQA1GAL | 🇲🇽 MX | Blue Mountain Long LifeAll Vehicle | View on Amazon |
| PRESTONE | AF3100 | 🇲🇽 MX | Prime Yellow - All VehiclesExtended Life | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE | 846439 | 🇲🇽 MX | HD Nitrite Free Extended Life Yellow1 Gallon | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular | AF2100 | 🇲🇽 MX | All Vehicles10yr/300k mi | View on Amazon |
| PEAK | PKP1GAL | 🇲🇽 MX | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK | PXA1GAL | 🇲🇽 MX | Global Lifetime1 Gallon | View on Amazon |
| PRESTONE | AFMAX | 🇲🇽 MX | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular | 888374 | 🇲🇽 MX | American Vehicle Orange1 Gallon | View on Amazon |
| VALVOLINE Popular | ZXEL1 | 🇲🇽 MX | Dex-Cool Orange1 Gallon | View on Amazon |
| AISIN | ACD005 | 🇲🇽 MX | OrangeOAT | 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.
11 Coolant / Antifreeze parts are listed for the 2021 Chevrolet Onix, from PRESTONE, PEAK, VALVOLINE and 1 other brand. PRESTONE AF2100 carries the "Popular" badge.
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, PEAK and PRESTONE supply 2 parts: the catalog's value-priced group. A representative part number is PEAK BQA1GAL.
The Heavy Duty section lists 1 option from VALVOLINE — rated for severe service. VALVOLINE 846439 is listed in this group.
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 3 options from VALVOLINE and AISIN — built to original-equipment specification. VALVOLINE 888374 is listed in this group.
Coolant Reservoir Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD | T62 | 🇲🇽 MX | Standard | View on Amazon |
This table covers the caps on the overflow / expansion tank. 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.
This group shows a single part: MOTORAD T62.
Temperature Sender / Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | TX541 | 🇲🇽 MX | LS Model or LT Model | View on Amazon |
| WALKER PRODUCTS | 2112045 | 🇲🇽 MX | SensorIncludes O-Ring | 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 2021 Chevrolet Onix, from STANDARD MOTOR PRODUCTS and WALKER PRODUCTS.
Listed part numbers: STANDARD MOTOR PRODUCTS TX541 and WALKER PRODUCTS 2112045.
Water Pump
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP | US8210 | 🇲🇽 MX | View on Amazon | |
| US MOTOR WORKS | US8210 | 🇲🇽 MX | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP | 1303040 | 🇲🇽 MX | Mounting Hardware Included: 1 Rubber Gasket | View on Amazon |
| GMB | 1303040 | 🇲🇽 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 Chevrolet Onix come from 3 brands — FVP, US MOTOR WORKS and GMB.
The Economy section: 2 options from FVP and US MOTOR WORKS. FVP US8210 is listed in this group.
Standard Replacement: 2 parts, from FVP and GMB. A representative part number is FVP 1303040.
Part numbers include FVP US8210 and FVP 1303040, among others listed above.
Buying Cooling System Parts for a 2021 Chevrolet Onix
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.
- Confirm you have the 1.2L L3 Turbocharged engine — every part on this page is matched to it.
- 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 Chevrolet Onix?
Our catalog currently lists 18 cooling system parts for the 2021 Chevrolet Onix across 4 subcategories and 10 brands, covering the 1.2L L3 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of cooling system problems on a 2021 Chevrolet Onix?
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 Chevrolet Onix 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 Chevrolet Onix?
Every part on this page is matched to the 1.2L L3 Turbocharged engine. 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 Chevrolet Onix
Cooling System Parts for Other Chevrolet Onix 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.