Mishimoto 71°C Low-Temp Racing Thermostat w/ Housing, angled housing, side view

Mishimoto 71°C Low-Temp Racing Thermostat w/ Housing - Toyota 4Runner 4.0L 2003-2024

Mishimoto SKU: MISMMTS-4RUN40-03
Price
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Details

BrandMishimoto
SKUMISMMTS-4RUN40-03
GTIN / UPC811580034282
Manufacturer Part NumberMMTS-4RUN40-03

Product Information

Mishimoto low-temperature racing thermostat with stock-style housing for the 2003-2024 Toyota 4Runner 4.0L (1GR-FE, also fits FJ Cruiser, Tacoma and Tundra 4.0L). Its lower 71°C / 160°F activation, versus the 82°C / 180°F factory unit, lets coolant flow through the engine earlier to reduce and maintain lower temperatures, ideal in hot climates, on modified vehicles, or under extreme towing. Easy direct-fit install, backed by the Mishimoto Lifetime Warranty.

Specifications

Type Low-temperature racing thermostat w/ housing
Activation Temp 71°C / 160°F (vs. 82°C / 180°F stock)
Engine 4.0L 1GR-FE V6
Includes Stock-style housing w/ pre-installed thermostat
Activation Temperature 160 °F
OEM Activation Temperature 180 °F
Part Number MMTS-4RUN40-03
Warranty Lifetime
Application 2003-2024 Toyota 4Runner 4.0L (+ FJ Cruiser, Tacoma, Tundra)

This part fits:

Year Make Model Submodel
2003-2024 Toyota 4Runner SR5 / Limited / TRD Off-Road / TRD Pro / Trail / Sport
2007-2023 Toyota FJ Cruiser Base
2005-2015 Toyota Tacoma Base / Pre Runner / X-Runner / TRD Pro
2005-2014 Toyota Tundra Base / SR / SR5

Shipping

  • In stock orders typically ship within 1 to 3 business days.
  • Standard, expedited, and overnight options at checkout.
  • Oversized items ship by freight and take longer.
  • Special order items follow a lead time we confirm with you individually before the order is committed.
  • Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
  • Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
  • International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

  • 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
  • Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
  • Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
  • Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
  • Product images may be representative. The SKU and specifications in the listing are what ships.
  • Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Returns & Refunds · Warranty
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