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Upgrade your Lexus IS250 with the Mishimoto part number misMMTS-LEX-06 racing thermostat, engineered to optimize your vehicle’s cooling system performance. Designed for models from 2006 to 2015, this thermostat begins to open 25.2°F (14°C) earlier than the stock unit at 154.4°F (68°C), allowing coolant to flow into the radiator sooner. This early opening helps maintain optimal engine temperatures during both everyday driving and high-performance driving conditions, reducing the risk of overheating and ensuring consistent engine operation. When combined with a Mishimoto aluminum radiator, this thermostat becomes a crucial component in maintaining a cool and efficient engine, especially during demanding driving scenarios or spirited track days. The thermostat includes an OEM-quality housing for a perfect fit, ensuring reliable operation and easy installation. Like all Mishimoto thermostats, it is backed by the Mishimoto Lifetime Warranty, providing you with peace of mind and quality assurance. Constructed with durable materials, this thermostat is designed to withstand high temperatures and aggressive driving, making it an excellent upgrade for enthusiasts seeking maximum cooling performance. Whether you're enhancing your daily driver or preparing your vehicle for racing, this thermostat helps keep your engine operating at its best, reducing thermal stress and improving overall reliability. Proper cooling system operation is critical for engine longevity, and this Mishimoto thermostat offers a straightforward upgrade to achieve that goal effectively. Compatibility spans several Lexus models, including GS300, GS450h, IS250, and IS350 from various model years, ensuring a versatile fit for your vehicle. Trust Mishimoto for high-quality automotive parts that deliver performance and durability for your Lexus.
Features:
Fitment:
2006 Lexus GS300 Base
2006 Lexus IS250 Base
2006 Lexus IS350 Base
2007 Lexus GS350 Base
2007 Lexus GS450h Base
2007 Lexus IS250 Base
2007 Lexus IS350 Base
2008 Lexus GS350 Base
2008 Lexus GS450h Base
2008 Lexus IS250 Base
2008 Lexus IS350 Base
2009 Lexus GS350 Base
2009 Lexus GS450h Base
2009 Lexus IS250 Base
2009 Lexus IS350 Base
2010 Lexus GS350 Base
2010 Lexus GS450h Base
2010 Lexus IS250 Base
2010 Lexus IS250 C
2010 Lexus IS350 Base
2010 Lexus IS350 C
2011 Lexus GS350 Base
2011 Lexus GS450h Base
2011 Lexus IS250 Base
2011 Lexus IS250 C
2011 Lexus IS350 Base
2011 Lexus IS350 C
2012 Lexus IS250 Base
2012 Lexus IS250 C
2012 Lexus IS350 Base
2012 Lexus IS350 C
2013 Lexus GS350 Base
2013 Lexus GS350 F Sport
2013 Lexus GS450h Base
2013 Lexus IS250 Base
2013 Lexus IS250 C
2013 Lexus IS350 Base
2013 Lexus IS350 C
2014 Lexus GS350 Base
2014 Lexus GS350 F Sport
2014 Lexus GS450h Base
2014 Lexus IS250 Base
2014 Lexus IS250 C
2014 Lexus IS250 C F Sport
2014 Lexus IS250 F Sport
2014 Lexus IS350 Base
2014 Lexus IS350 C
2014 Lexus IS350 C F Sport
2014 Lexus IS350 F Sport
2015 Lexus GS350 Base
2015 Lexus GS350 F Sport
2015 Lexus GS450h Base
2015 Lexus GS450h F Sport
2015 Lexus IS250 Base
2015 Lexus IS250 C
2015 Lexus IS250 C F Sport
2015 Lexus IS250 F Sport
2015 Lexus IS350 Base
2015 Lexus IS350 C
2015 Lexus IS350 C F Sport
2015 Lexus IS350 F Sport
2015 Lexus RC350 Base
2015 Lexus RC350 F Sport
2016 Lexus GS450h Base
2016 Lexus GS450h F Sport
2016 Lexus IS300 Base
2016 Lexus IS300 F Sport
2016 Lexus IS350 Base
2016 Lexus IS350 F Sport
2016 Lexus RC300 Base
2016 Lexus RC300 F Sport
2016 Lexus RC350 Base
2016 Lexus RC350 F Sport
2017 Lexus GS450h Base
2017 Lexus GS450h F Sport
2017 Lexus IS300 Base
2017 Lexus IS300 F Sport
2017 Lexus IS350 Base
2017 Lexus IS350 F Sport
2017 Lexus RC300 Base
2017 Lexus RC300 F Sport
2018 Lexus GS450h Base
2018 Lexus GS450h F Sport
2018 Lexus IS300 Base
2018 Lexus IS300 F Sport
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
