Sale

Heating and Cooling› Thermostats, Housings and Fillers

Yota 1 Performance

Thermostat

$31.59 $22.60 Save $8.99

SKU: 90916-03129

Special Order
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

Symptoms of a failing thermostat include erratic temperature readings, overheating, or coolant leaks.

This thermostat replaces part numbers 90916-A3003, 90916A3003, 90916-03129, 9091603129, 90916-A3002, 16325-62010, and 90916A3002. It is constructed with premium materials for durability and features a stainless steel mounting flange and channel-constructed stainless steel spring frame.
Show original supplier description
The Genuine Toyota thermostat is a direct replacement component essential for maintaining optimal engine operating temperature by regulating coolant flow. Recognizing the signs of a faulty thermostat, such as erratic temperature gauge readings, engine overheating, or coolant leaks around the housing, is crucial for preventing potential engine damage. It is constructed with premium materials to ensure durability, featuring a stainless steel mounting flange for a proper seal and a channel-constructed stainless steel spring frame for enhanced strength. The part number for this thermostat is 90916-03129, and it serves as a direct replacement for several other part numbers, including 90916-A3003, 90916A3003, 9091603129, 90916-A3002, 16325-62010, and 90916A3002. This thermostat is compatible with a wide range of Toyota and Lexus vehicles. For Toyota models, compatibility includes: 1995-2018 Avalon, 1994-2017 Camry, 2000-2005 Celica, 2000-2019 Corolla, 2001-2019 Highlander, 2003-2013 Matrix, 2000-2005 MR2 Spyder, 2001-2009 Prius, 2001-2018 RAV4, 1998-2016 Sienna, 1999-2008 Solara, 2005-2016 Tacoma, 2009-2015 Venza, 2007-2018 Yaris, and 2005-2006/2011-2016 tC, 2004-2006 xB/xA, and 2008-2010 xD. For Lexus models, compatibility includes: 1994-2003 ES300, 2004-2006 ES330, 2007-2017 ES350, 1993-2005 GS300, 2001-2005 IS300, 1990-1997 LS400, 1999-2003 RX300, 2004-2006 RX330, 2007-2015 RX350, 2006-2008 RX400h, 2010-2014 RX450h, 1992-2000 SC300, and 1992-1997 SC400.
Vehicle Symptoms
  • Engine temperature gauge reads below normal while driving
  • Inconsistent heater output – blows cold then hot
  • Engine overheating after highway driving or idling
  • Coolant leak around thermostat housing
  • Check engine light on with engine temperature issues
Diagnostic Codes
  • P0128 – Coolant Thermostat Temp Below Regulating Temp
  • P0125 – Insufficient Coolant Temp for Closed Loop
  • P0126 – Insufficient Coolant Temp for Stable Operation
Relevant Conversations
  • P0128 code on Toyota 4Runner – replace thermostat?
  • engine running cold after warm up – thermostat stuck open
  • Toyota thermostat replacement guide 90916-03129
  • heater blows cold air at idle – thermostat?
  • engine overheating but coolant full – thermostat symptoms
  • Thermostat vs coolant temperature sensor – how to tell
  • P0125 and P0126 both appearing – what part?
  • Yota 1 Performance thermostat vs OEM Toyota
  • coolant leak from thermostat housing – replace or just gasket?
  • check engine light with fluctuating temperature – thermostat fix

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandYota 1 Performance
Part Number90916-03129
CategoryHeating and Cooling

Videos

About MOTORMIA

5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy