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SKU: MISMMTS-4RUN40-03

Mishimoto 2003+ Toyota 4Runner 4.0L Low-Temperature Racing Thermostat

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$105.99
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Shipping & delivery

Usually ships in 2–3 business days unless a different lead time is shown on this page. Shipping cost is calculated at checkout (UPS or USPS to the contiguous U.S.).

Shipping policy · Returns · Fitment questions? (561) 207-7988

Delivery and Shipping

Standard order processing is 2–3 business days unless this product or your order confirmation states a different lead time. Custom-built, made-to-order, backorder, and pre-order items follow their stated lead times.

Enclosures and subwoofer boxes ship for $50 per unit. Other shipping charges are calculated at checkout. Orders outside the contiguous 48 United States may require additional shipping; we will contact you for approval before shipment.

Subwoofer boxes ship UPS Ground where available. Read our Shipping Policy and Return and Refund Policy for delivery, product-specific return windows, and warranty details.

Description
A defective thermostat can result in engine overheating and potential internal damage. Improve the reliability of your 2003-2024 Toyota 4Runner 4.0L cooling system with a Mishimoto Low-Temperature Racing Thermostat and housing! This thermostat is designed as a direct-fit replacement for your aged stock unit. The Mishimoto thermostat has a lower activation temperature (71?C/160?F) compared to the factory thermostat (82?C/180?F). The lower activation temperature allows coolant to flow through the engine earlier, which reduces and maintains lower engine temperatures. This thermostat is ideal for use in warmer climates, on vehicles making more power than stock, or under extreme towing/driving conditions. The stock-style housing will provide a proper seal and installs easily. Like all our Toyota Performance parts, this thermostat and housing includes the Mishimoto Lifetime Warranty.

This Part Fits:

Year Make Model Submodel
2023 Toyota 4Runner 40th Anniversary Edition
2003-2024 Toyota 4Runner Limited
2020-2021 Toyota 4Runner Nightshade
2003-2009 Toyota 4Runner Sport
2003-2024 Toyota 4Runner SR5
2018-2024 Toyota 4Runner SR5 Premium
2010-2016,2021-2022 Toyota 4Runner Trail
2017-2024 Toyota 4Runner TRD Off-Road
2018-2024 Toyota 4Runner TRD Off-Road Premium
2015-2024 Toyota 4Runner TRD Pro
2022-2024 Toyota 4Runner TRD Sport
2020-2021 Toyota 4Runner Venture
2007-2014 Toyota FJ Cruiser Base
2008 Toyota FJ Cruiser Trail Teams Special Edition
2007 Toyota FJ Cruiser TRD Special Edition
2005-2015 Toyota Tacoma Base
2005-2015 Toyota Tacoma Pre Runner
2015 Toyota Tacoma TRD Pro
2005-2013 Toyota Tacoma X-Runner
2005-2013 Toyota Tundra Base
2014 Toyota Tundra SR
2005-2011 Toyota Tundra SR5

Fitment & installation

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