# Mishimoto 06-15 Lexus IS250 Racing Thermostat - 68C

The Mishimoto racing thermostat for the Lexus IS250 2006-2015 is designed to help your cooling system operate at peak efficiency, whether you're cruising to your local car meet or tearing up the track. Our thermostat begins to open 25.2F (14C) earlier than the stock thermostat at 154.4F (68C). That allows precious coolant to flow into the radiator and start shedding heat sooner. Couple this thermostat with a Mishimoto performance aluminum radiator and you have the recipe for an engine that runs cool no matter the situation. This 2006-2015 Lexus IS250 thermostat includes an OEM-quality housing for a perfect fit and, like all of our thermostats, it's backed by our Mishimoto Lifetime Warranty.

-   Allows cooling system to operate at peak efficiency
-   Begins opening 25.2F (14C) earlier than stock
-   Includes OEM-quality thermostat housing

This Part Fits:

Year

Make

Model

Submodel

2006

Lexus

GS300

Base

2007-2011,2013-2015

Lexus

GS350

Base

2013-2015

Lexus

GS350

F Sport

2007-2011,2013-2018

Lexus

GS450h

Base

2015-2018

Lexus

GS450h

F Sport

2006-2015

Lexus

IS250

Base

2010-2015

Lexus

IS250

C

2014-2015

Lexus

IS250

C F Sport

2014-2015

Lexus

IS250

F Sport

2016-2018

Lexus

IS300

Base

2016-2018

Lexus

IS300

F Sport

2006-2017

Lexus

IS350

Base

2010-2015

Lexus

IS350

C

2014-2015

Lexus

IS350

C F Sport

2014-2017

Lexus

IS350

F Sport

2016-2017

Lexus

RC300

Base

2016-2017

Lexus

RC300

F Sport

2015-2016

Lexus

RC350

Base

2015-2016

Lexus

RC350

F Sport

## Details

- **Price:** 149.61 CAD
- **Vendor:** Mishimoto
- **Type:** Thermostats

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 149.61 CAD | In stock |

## Images

- Photo - Primary
- User 1
- User 1
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/mishimoto-06-15-lexus-is250-racing-thermostat-68c)
> Updated: 2026-06-27