The 2024 Lexus IS300 has 37 cooling system parts with verified fitment on this page — 7 part types and 22 brands, covering both the 2.0L L4 Turbocharged and the 3.5L V6. Each part includes a manufacturer part number and application notes.
On the 2024 Lexus IS300, 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 (15 parts), Temperature Sender / Sensor (7 parts) and Radiator (6 parts). The other 4 part types cover the remaining 9 parts.
The 2024 Lexus IS300 was sold with both the 2.0L L4 Turbocharged and the 3.5L V6. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2024 Lexus IS300 cooling system parts are PRESTONE (5 parts), PEAK (4 parts) and BECK/ARNLEY (3 parts), plus 19 more brands. Quality grades include Standard Replacement, Economy and Premium.
7 parts on this 2024 Lexus IS300 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including PRESTONE AF2100 (Coolant / Antifreeze) and DENSO 2219578 (Radiator). Click any part number to see every vehicle that part fits.
Coolant / Antifreeze
Compatible With All Colors
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Fits: 2.0L L4 Turbocharged | AF3055 | 🇺🇸 US 🇲🇽 MX | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PEAK Fits: 2.0L L4 Turbocharged | BQA1GAL | 🇺🇸 US 🇲🇽 MX | Blue Mountain Long LifeAll Vehicle | View on Amazon |
| PRESTONE Fits: 2.0L L4 Turbocharged | AF3100 | 🇺🇸 US 🇲🇽 MX | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| VALVOLINE Fits: 2.0L L4 Turbocharged | 719009 | 🇺🇸 US 🇲🇽 MX | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: 2.0L L4 Turbocharged | AF2100 | 🇺🇸 US 🇲🇽 MX | All Vehicles10yr/300k mi | View on Amazon |
| PEAK Fits: 2.0L L4 Turbocharged | PKP1GAL | 🇺🇸 US 🇲🇽 MX | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK Fits: 2.0L L4 Turbocharged | PXA1GAL | 🇺🇸 US 🇲🇽 MX | Global Lifetime1 Gallon | View on Amazon |
| PRESTONE Fits: 2.0L L4 Turbocharged | AF6210 | 🇺🇸 US 🇲🇽 MX | MAX Original EquipmentAsian Red/Pink | View on Amazon |
| PRESTONE Fits: 2.0L L4 Turbocharged | AFMAX | 🇺🇸 US 🇲🇽 MX | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AISIN Popular Fits: 2.0L L4 Turbocharged | ACT002 | 🇺🇸 US 🇲🇽 MX | PinkHOAT | View on Amazon |
| VALVOLINE Popular Fits: 2.0L L4 Turbocharged | 675130 | 🇺🇸 US 🇲🇽 MX | Asian Vehicle Red1 Gallon | View on Amazon |
| BECK/ARNLEY Fits: 2.0L L4 Turbocharged | 2521502 | 🇺🇸 US 🇲🇽 MX | Premium Extra Life Pink | View on Amazon |
| BECK/ARNLEY Fits: 2.0L L4 Turbocharged | 2521002 | 🇺🇸 US 🇲🇽 MX | Premium Red | View on Amazon |
| PEAK Fits: 2.0L L4 Turbocharged | PAR1GAL | 🇺🇸 US 🇲🇽 MX | OET Asian Extended Life Red1 Gallon | View on Amazon |
| PENTOSIN Fits: 2.0L L4 Turbocharged | 8115209 | 🇺🇸 US 🇲🇽 MX | Pentofrost A41 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.
15 Coolant / Antifreeze parts for the 2024 Lexus IS300 come from 6 brands — PRESTONE, PEAK, VALVOLINE and 3 other brands. The "Popular" part is PRESTONE AF2100.
In the Compatible With All Colors grade, PRESTONE supplies 1 part: grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. A representative part number is PRESTONE AF3055.
The Economy section lists 3 options from PEAK, PRESTONE and VALVOLINE — the catalog's value-priced group. PEAK BQA1GAL is listed in this group.
In the Premium grade, PRESTONE and PEAK supply 5 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.
In the Standard Replacement grade, BECK/ARNLEY, AISIN, VALVOLINE and 2 other brands supply 6 parts: built to original-equipment specification. A representative part number is AISIN ACT002.
Coolant Reservoir Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CALORSTAT Fits: 2.0L L4 Turbocharged | RC0145 | 🇺🇸 US 🇲🇽 MX | Attachment Type: Threaded | View on Amazon |
| GATES Fits: 2.0L L4 Turbocharged | 31541 | 🇺🇸 US 🇲🇽 MX | OE TypeThreaded (Closed System) - (SAE Range 18-20 psi) | View on Amazon |
| MOTORAD Fits: 2.0L L4 Turbocharged | T51 | 🇺🇸 US 🇲🇽 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.
3 Coolant Reservoir Cap parts are listed for the 2024 Lexus IS300, from CALORSTAT, GATES and MOTORAD.
This group includes CALORSTAT RC0145, GATES 31541 and MOTORAD T51.
Cooling Fan Control Module
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Fits: 2.0L L4 Turbocharged | FCM143 | 🇺🇸 US 🇲🇽 MX | View on Amazon | |
| SKP Fits: 2.0L L4 Turbocharged | SKFCM143 | 🇺🇸 US 🇲🇽 MX | View on Amazon |
This table covers the Cooling Fan control modules.
2 Cooling Fan Control Module parts are listed for the 2024 Lexus IS300, from GATES and SKP.
Listed part numbers: GATES FCM143 and SKP SKFCM143.
Radiator
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD Fits: 2.0L L4 Turbocharged | 13912C | 🇺🇸 US 🇲🇽 MX | Auxiliary | View on Amazon |
| GPD Fits: 2.0L L4 Turbocharged | 13612C | 🇺🇸 US 🇲🇽 MX | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO Popular Fits: 2.0L L4 Turbocharged | 2219578 | 🇺🇸 US 🇲🇽 MX | View on Amazon | |
| TYC Popular Fits: 2.0L L4 Turbocharged | 13612 | 🇺🇸 US 🇲🇽 MX | View on Amazon | |
| OSC Fits: 2.0L L4 Turbocharged | 13612 | 🇺🇸 US 🇲🇽 MX | MAIN RADIATOR | View on Amazon |
| UAC Fits: 2.0L L4 Turbocharged | RA13612C | 🇺🇸 US 🇲🇽 MX | 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.
6 Radiator parts for the 2024 Lexus IS300 come from 5 brands — GPD, DENSO, TYC and 2 other brands. The "Popular" part is DENSO 2219578.
The Economy section: 2 options from GPD. GPD 13912C is listed in this group.
Standard Replacement: 4 parts, from DENSO, TYC, OSC and 1 other brand. A representative part number is DENSO 2219578.
Listed part numbers: DENSO 2219578, GPD 13912C and GPD 13612C, plus the other parts above.
Radiator Fan Assembly
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TECHPRO Fits: 2.0L L4 Turbocharged | LX3115149 | 🇺🇸 US 🇲🇽 MX | 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 IS300 — TECHPRO LX3115149.
Temperature Sender / Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: 2.0L L4 Turbocharged | 2CTS0051 | 🇺🇸 US 🇲🇽 MX | View on Amazon | |
| ULTRA-POWER Fits: 2.0L L4 Turbocharged | 5S1616 | 🇺🇸 US 🇨🇦 CA | Fits Located in Engin | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO Popular Fits: 2.0L L4 Turbocharged | 1931000 | 🇺🇸 US 🇲🇽 MX | Engine Coolant Temperature Sensor | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 2.0L L4 Turbocharged | TX40 | 🇺🇸 US 🇲🇽 MX | Rectangular Connector2 Terminal | View on Amazon |
| ACDELCO Fits: 2.0L L4 Turbocharged | D583 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| WALKER PRODUCTS Fits: 2.0L L4 Turbocharged | 2111060 | 🇺🇸 US 🇲🇽 MX | Sensor Only | View on Amazon |
| WELLS Fits: 2.0L L4 Turbocharged | 5S1616 | 🇺🇸 US 🇲🇽 MX | Connector Shape: Rectangular | 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.
7 Temperature Sender / Sensor parts for the 2024 Lexus IS300 come from 7 brands — HOLSTEIN, ULTRA-POWER, DENSO and 4 other brands. The "Popular" part is DENSO 1931000.
The Economy section: 2 options from HOLSTEIN and ULTRA-POWER. HOLSTEIN 2CTS0051 is listed in this group.
Standard Replacement: 5 parts, from DENSO, STANDARD MOTOR PRODUCTS, ACDELCO and 2 other brands. A representative part number is DENSO 1931000.
This group includes DENSO 1931000, HOLSTEIN 2CTS0051 and ULTRA-POWER 5S1616 and the remaining parts above.
Thermostat
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Fits: 2.0L L4 Turbocharged | 1430971 | 🇺🇸 US 🇲🇽 MX | Outer (Toward Lower Radiator Coolant Hose)Temperature: 82C/180F | View on Amazon |
| MOTORAD Fits: 2.0L L4 Turbocharged | 1064172 | 🇺🇸 US 🇲🇽 MX | Standard | View on Amazon |
| MOTORAD Fits: 2.0L L4 Turbocharged | 1065180 | 🇺🇸 US 🇲🇽 MX | Standard | View on Amazon |
This table covers the thermostats that open the coolant circuit at the specified temperature. Typical signs include slow warm-up, a gauge that climbs in traffic, or heat that never quite arrives. Replace the housing gasket with the thermostat and bleed the system so a trapped air pocket does not cook the new part.
3 Thermostat parts are listed for the 2024 Lexus IS300, from MOTORAD and BECK/ARNLEY.
This group includes BECK/ARNLEY 1430971, MOTORAD 1064172 and MOTORAD 1065180.
Buying Cooling System Parts for a 2024 Lexus IS300
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. Every cooling system part here is 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 Temperature Sender / Sensor .
Frequently Asked Questions
How many cooling system parts fit the 2024 Lexus IS300?
Our catalog currently lists 37 cooling system parts for the 2024 Lexus IS300 across 7 subcategories and 22 brands, covering both the 2.0L L4 Turbocharged and the 3.5L V6. Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 2024 Lexus IS300 engines?
Yes. Every cooling system part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. 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 2024 Lexus IS300?
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 IS300 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 IS300?
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 2024 Lexus IS300
Cooling System Parts for Other Lexus IS300 Years
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