This page lists 5 cooling system parts for the 2024 Lexus RC350, across 3 part types, covering the 3.5L V6 engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 2024 Lexus RC350, 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 5 listed parts are Coolant Reservoir Cap (2 parts), Radiator (2 parts) and Radiator Fan Assembly (1 part).
Every part on this page is matched to the 3.5L V6 — the only engine offered in the 2024 Lexus RC350.
The most listed brands for 2024 Lexus RC350 cooling system parts are CALORSTAT (1 part), MOTORAD (1 part) and GPD (1 part), plus 2 more brands. Quality grades include Economy and Standard Replacement.
Each part number listed for the 2024 Lexus RC350 opens a page with every vehicle that part fits.
Coolant Reservoir Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CALORSTAT | RC0145 | 🇺🇸 US 🇨🇦 CA | Attachment Type: Threaded | View on Amazon |
| MOTORAD | T51 | 🇺🇸 US 🇨🇦 CA | 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.
2 Coolant Reservoir Cap parts are listed for the 2024 Lexus RC350, from CALORSTAT and MOTORAD.
Part numbers include CALORSTAT RC0145 and MOTORAD T51.
Radiator
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD | 13570C | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| UAC | RA13701C | 🇺🇸 US 🇨🇦 CA | Downflow | 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.
2 Radiator parts for the 2024 Lexus RC350 come from 2 brands — GPD and UAC.
The Economy section lists 1 option from GPD — the catalog's value-priced group. GPD 13570C is listed in this group.
In the Standard Replacement grade, UAC supplies 1 part: built to original-equipment specification. A representative part number is UAC RA13701C.
Part numbers include GPD 13570C and UAC RA13701C.
Radiator Fan Assembly
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AGILITY | 6010351 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator.
One part is listed for the 2024 Lexus RC350 — AGILITY 6010351.
Buying Cooling System Parts for a 2024 Lexus RC350
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 3.5L V6 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 Reservoir Cap and Radiator .
Frequently Asked Questions
How many cooling system parts fit the 2024 Lexus RC350?
Our catalog currently lists 5 cooling system parts for the 2024 Lexus RC350 across 3 subcategories and 5 brands, covering the 3.5L V6 engine. Each part is matched to the engine(s) it fits.
What are the signs of cooling system problems on a 2024 Lexus RC350?
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 2024 Lexus RC350 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 2024 Lexus RC350?
Every part on this page is matched to the 3.5L V6 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 2024 Lexus RC350
Cooling System Parts for Other Lexus RC350 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.