Toyota Engine Coolant Thermostat 90916-A3003

Scion, Lexus, Toyota Engine Coolant Thermostat

Replace the old and worn out Thermostat with Genuine Toyota Products. This is an OEM part that is created from top quality materials to ensure safety and maximum performance of your vehicle.

Features and Benefits:

  • The opening and closing of the thermostat at the correct time is critical to maintaining proper engine temperature.
  • In the event that it happens to become “stuck” closed, there is no way for coolant to be circulated through the radiator and eventually back through the engine, which causes extremely hot engine temperatures.
  • Manufacturer/Brand:
  • Part Number: 90916-A3003
  • Alternate Part Number: 90916-03084, 90916-03129
  • Part Description: Engine Coolant Thermostat
  • Part Location: Engine
  • Fitment Type: Direct Replacement
  • Quantity Sold: Sold Individually
  • Vehicle Fit: Scion TC (2005-2016), xD (2008-2010); Lexus ES300 (1994-2003), ES330 (2004-2006), LS400 (1990-1997), RX300 (1999-2003), RX330 (2004-2006), RX400H (2006-2008), SC400 (1992-1997); Toyota Avalon (1995-2004), Camry (1994-2017), Celica (2000-2005), Corolla (2000-2009, 2014-2016), Highlander (2001-2019), MR2 Spyder (2000-2005), Matrix (2003-2009), RAV4 (2001-2018), Sienna (1998-2014), Solara (1999-2008), Venza (2009-2015)

 0.00 Inc VAT

  • USD: 0.00$

Add to wishlist Add to compare


When you select genuine OEM part, you can rely on the high quality and effectiveness of the product without having to guess if it will work with your vehicle. Protecting your investment is important and choosing the right parts can be challenging. So don’t waste another minute searching for a replacement that might work; stick with what you know and get the same parts and accessories the dealership uses.

A car thermostat regulates the flow of coolant through the engine and is an incredibly important player in the operation of your vehicle’s engine. You may hear the phrase “the thermostat was stuck open or closed.” When the engine has been sitting for a while and is not warm, the thermostat will be closed. Once the engine is running and reaches a certain operating temperature, a sensor inside the thermostat will cause it to open, allowing coolant to flow to and from the radiator, decreasing the temperature so it can be recirculated through the engine again. This constant flow (in conjunction with several other cooling system components) is what keeps your vehicle’s engine functioning at the optimum temperature.


Weight1.5 kg


There are no reviews yet.

Write A Review

Your email address will not be published. Required fields are marked *

You can get in touch with any of our Agent available on WhatsApp
Agent 2
Customer Service
Agent 1
Customer Service
How can we help?