The 2026 Lexus LC500 has 13 cooling system parts with verified fitment on this page — 4 part types and 11 brands, covering the 5.0L V8 engine. Each part includes a manufacturer part number and application notes.
The cooling system system on the 2026 Lexus LC500 keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses. The largest groups are Coolant / Antifreeze (5 parts), Water Pump (4 parts) and Temperature Sender / Sensor (3 parts). The other 1 part type covers the remaining 1 part.
The 2026 Lexus LC500 came with a single engine, the 5.0L V8, and every part is verified against it.
11 brands supply cooling system parts for the 2026 Lexus LC500, led by VALVOLINE (2 parts), AISIN (2 parts) and PENTOSIN (1 part), plus 8 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2026 Lexus LC500. 1 part has it: AISIN ACT002 (Coolant / Antifreeze). Each part number opens a page with every vehicle that part fits.
Coolant / Antifreeze
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE | 719009 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AISIN Popular | ACT002 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | PinkHOAT | View on Amazon |
| AISIN | ACT002C | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Pink - Canada OnlyHOAT | View on Amazon |
| PENTOSIN | 8115209 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Pentofrost A41 Gallon | View on Amazon |
| VALVOLINE | 675130 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Asian Vehicle Red1 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.
5 Coolant / Antifreeze parts are listed for the 2026 Lexus LC500, from VALVOLINE, AISIN and PENTOSIN. AISIN ACT002 carries the "Popular" badge.
In the Economy grade, VALVOLINE supplies 1 part: the catalog's value-priced group. A representative part number is VALVOLINE 719009.
The Standard Replacement section lists 4 options from AISIN, PENTOSIN and VALVOLINE — built to original-equipment specification. AISIN ACT002 is listed in this group.
This group includes AISIN ACT002, VALVOLINE 719009 and AISIN ACT002C and the remaining parts above.
Temperature Sender / Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | D583 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| NISSENS | 207098 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Model | View on Amazon |
| STANDARD MOTOR PRODUCTS | TX40 | 🇺🇸 US 🇨🇦 CA 🇲🇽 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 2026 Lexus LC500, from ACDELCO, NISSENS and STANDARD MOTOR PRODUCTS.
This group includes ACDELCO D583, NISSENS 207098 and STANDARD MOTOR PRODUCTS TX40.
Water Pump
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AIRTEX | AW6338 | 🇺🇸 US 🇨🇦 CA | Includes Gasket | View on Amazon |
| FVP | US6338 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Model | View on Amazon |
| US MOTOR WORKS | US6338 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Model | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYCO | DP1311 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Serpentine Belt Driven | 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 2026 Lexus LC500 come from 4 brands — AIRTEX, FVP, US MOTOR WORKS and 1 other brand.
The Economy section: 3 options from AIRTEX, FVP and US MOTOR WORKS. AIRTEX AW6338 is listed in this group.
Standard Replacement: 1 part, from DAYCO. A representative part number is DAYCO DP1311.
Part numbers include AIRTEX AW6338 and FVP US6338, among others listed above.
Water Pump Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | 36235 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | To Block | View on Amazon |
This table covers the gaskets between the water pump and the block or housing. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
One part is listed for the 2026 Lexus LC500 — FEL-PRO 36235.
Buying Cooling System Parts for a 2026 Lexus LC500
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 5.0L V8 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 2026 Lexus LC500?
Our catalog currently lists 13 cooling system parts for the 2026 Lexus LC500 across 4 subcategories and 11 brands, covering the 5.0L V8 engine. Each part is matched to the engine(s) it fits.
What are the signs of cooling system problems on a 2026 Lexus LC500?
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 2026 Lexus LC500 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 2026 Lexus LC500?
Every part on this page is matched to the 5.0L V8 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 2026 Lexus LC500
Cooling System Parts for Other Lexus LC500 Years
Switch vehicle or jump to a subcategory
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.