Motorad Integrated Thermostat Housing: With Seal, 180 Degrees, 634-180
In stock
$43.49
Listed as compatible with this vehicle by the retailer feed.
Check price2021 Toyota 4Runner Thermostats
3 products listed for this model year in the retailer catalog. Check engine and trim details before ordering.
Dorman Thermostat Assembly: Includes Thermostat housing and Gasket, 180 Degrees, 902-5148
In stock
$60.99
Listed as compatible with this vehicle by the retailer feed.
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Carquest Coolant Housing/Water Outlet, CH1038
In stock
$131.99
Listed as compatible with this vehicle by the retailer feed.
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This site contains affiliate links. We may earn a commission if you buy through them. We do not sell these products or guarantee merchant inventory. Compatibility is listed by the retailer feed for this vehicle; it is not an OEM confirmation. Catalog snapshot: Aug 15, 2026.