Mishimoto racing thermostat with OEM-quality housing for the 2006-2015 Lexus IS250 (and related IS350/GS350/RC). It begins opening at 68°C / 154°F — about 14°C (25°F) earlier than stock — letting coolant reach the radiator sooner to keep temperatures down. Direct-fit replacement, backed by the Mishimoto Lifetime Warranty.
| Type | Racing thermostat w/ housing |
| Activation Temp | 68°C / 154°F (14°C earlier than stock) |
| Includes | OEM-quality housing |
| Warranty | Lifetime |
| Application | 2006-2015 Lexus IS250 (see fitment) |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2006 | Lexus | GS300 | Base |
| 2007-2015 | Lexus | GS350 | Base / F Sport |
| 2007-2018 | Lexus | GS450h | Base / F Sport |
| 2006-2015 | Lexus | IS250 | Base / C / F Sport |
| 2016-2018 | Lexus | IS300 | Base / F Sport |
| 2006-2017 | Lexus | IS350 | Base / C / F Sport |
| 2016-2017 | Lexus | RC300 | Base / F Sport |
| 2015-2016 | Lexus | RC350 | Base / F Sport |
