11 Cooling system parts are listed for the 2023 Lexus ES250, in 3 part types, covering the 2.5L L4 engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2023 Lexus ES250, 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. All 11 listed parts are Radiator (9 parts), Coolant Reservoir (1 part) and Coolant Reservoir Cap (1 part).
The 2023 Lexus ES250 came with a single engine, the 2.5L L4, and every part is verified against it.
10 brands supply cooling system parts for the 2023 Lexus ES250, led by TECHPRO (2 parts), MOTORAD (1 part) and CSF (1 part), plus 7 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2023 Lexus ES250. 2 parts have it, including CSF 3858 (Radiator) and TYC 13670 (Radiator). Each part number opens a page with every vehicle that part fits.
Coolant Reservoir
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TECHPRO | TO3014138 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Assembly | View on Amazon |
This table covers the overflow / expansion tanks that hold extra coolant.
This group shows a single part: TECHPRO TO3014138.
Coolant Reservoir Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD | T125 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Includes HosesStandard | 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 T125.
Radiator
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TECHPRO | TO3010364 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CSF Popular | 3858 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Upgraded with Higher Performance & Stronger B-Tube Design | View on Amazon |
| TYC Popular | 13670 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| AGILITY | 8013670 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | MAIN RADIATOR | View on Amazon |
| DENSO | 2219627 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| NISSENS | 606786 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Brazed cooling fins | View on Amazon |
| OSC | 13670 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| SPECTRA PREMIUM | CU13670 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| UAC | RA13670C | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Model or F Sport or Luxury or Ultra Luxury | 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.
9 Radiator parts are listed for the 2023 Lexus ES250, from TECHPRO, CSF, TYC and 6 other brands. CSF 3858 carries the "Popular" badge.
In the Economy grade, TECHPRO supplies 1 part: the catalog's value-priced group. A representative part number is TECHPRO TO3010364.
The Standard Replacement section lists 8 options from CSF, TYC, AGILITY and 5 other brands — built to original-equipment specification. CSF 3858 is listed in this group.
Part numbers include CSF 3858, TECHPRO TO3010364 and TYC 13670, among others listed above.
Buying Cooling System Parts for a 2023 Lexus ES250
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 2.5L L4 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: Radiator and Coolant Reservoir .
Frequently Asked Questions
How many cooling system parts fit the 2023 Lexus ES250?
Our catalog currently lists 11 cooling system parts for the 2023 Lexus ES250 across 3 subcategories and 10 brands, covering the 2.5L L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of cooling system problems on a 2023 Lexus ES250?
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 2023 Lexus ES250 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 2023 Lexus ES250?
Every part on this page is matched to the 2.5L L4 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 2023 Lexus ES250
Cooling System Parts for Other Lexus ES250 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.