2021 Ford F-150 Thermostats – OEM & Performance Cooling Solutions

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2021 Ford F-150 Thermostats – Maintain Engine Temperature & Performance

Ensure your 2021 Ford F-150 runs at optimal temperatures with a high-quality thermostat. The thermostat regulates coolant flow, preventing overheating, engine damage, and poor fuel efficiency.

Choose from OEM replacement thermostats for factory performance or low-temperature thermostats for enhanced cooling in towing, off-road, high-performance, or extreme weather conditions.
BL3Z8A586G - : Thermostat Housing for Ford Image

Thermostat Housing

$142.68
MSRP $205.00
Save $62.32
30.4% Off
RT1250 - : Motorcraft Thermostat for Ford Image

Motorcraft Thermostat

Ford RT-1250
F-150. Expedition, Navigator. From 01/18/2022. 2021-23. 3.5L.
$30.30
MSRP $47.09
Save $16.79
35.7% Off
BL3Z8A586F - : Thermostat Housing for Ford Image

Thermostat Housing

F150. 5.0L, main, single alternator. F-150. Without power converter. Thermostat Housing – Ford (BL3Z-8A586-F) The Ford Thermostat...
$134.73
MSRP $193.58
Save $58.85
30.4% Off
HL3Z8255A - : Thermostat Gasket for Ford Image

Thermostat Gasket

$6.53
MSRP $10.15
Save $3.62
35.7% Off
RT1255 - : Motorcraft Thermostat for Ford Image

Motorcraft Thermostat

Ford RT-1255
$30.19
MSRP $46.91
Save $16.72
35.6% Off
ML3Z8A586B - : Thermostat Housing for Ford Image

Thermostat Housing

Integrated Generator. Incl.Gaskets,Housings and Thermostat. 5.0L, main, dual alternator. F-150. With power converter. Power inverter #2.
$1,234.93
MSRP $1,837.70
Save $602.77
32.8% Off
RT1251 - : Motorcraft Thermostat for Ford Image

Motorcraft Thermostat

Ford RT-1251
$22.91
MSRP $35.60
Save $12.69
35.6% Off
HL3Z8507D - : Thermostat Housing Gasket for Ford Image

Thermostat Housing Gasket

Left. O-Ring. 2017-20. 2021-23. 3.5L.
$15.21
MSRP $21.67
Save $6.46
29.8% Off
BR3Z8575F - : Engine Coolant Thermostat for Ford Image

Engine Coolant Thermostat

Engine Coolant Thermostat – Ford (BR3Z-8575-F) The Engine Coolant Thermostat – Ford (BR3Z-8575-F) is a Genuine Ford OEM cooling...
$22.91
MSRP $35.60
Save $12.69
35.6% Off
ML3Z8575A - : Engine Coolant Thermostat for Ford Image

Engine Coolant Thermostat

F-150. Expedition, Navigator. From 01/18/2022. 2021-23. 3.5L.
$30.30
MSRP $47.09
Save $16.79
35.7% Off
RH306 - : Motorcraft Thermostat Housing for Ford Image

Motorcraft Thermostat Housing

Ford RH-306
Integrated Generator. Incl.Gaskets,Housings and Thermostat. 5.0L, main, dual alternator. F-150. With power converter. Power inverter #2.
$1,234.93
MSRP $1,837.70
Save $602.77
32.8% Off
ML3Z8590A - : Thermostat Housing Gasket for Ford Image

Thermostat Housing Gasket

5.0L, main, dual alternator.
$7.31
MSRP $10.42
Save $3.11
29.8% Off
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Why Choose OEM 2021 Ford F-150 Thermostats?

OEM Fitment – Precision-engineered for a direct fit on your F-150’s cooling system

Prevents Overheating – Maintains optimal engine temperature for efficiency. 

Durable Construction – Made from high-quality materials for long-lasting reliability

Improves Efficiency – Ensures proper fuel combustion and engine longevity. 

Easy InstallationDirect bolt-on replacement with no modifications required.

Compatible 2021 Ford F-150 Models

These OEM and performance thermostats fit: 

🚙 2021 Ford F-150 XL, XLT, Lariat, King Ranch, Platinum, Limited, and Raptor models 

🚙 Compatible with 2.7L EcoBoost, 3.3L Ti-VCT V6, 3.5L EcoBoost, 5.0L V8, and 3.0L Power Stroke Diesel engines 

🚙 Designed for standard and high-performance cooling systems 

🚙 Check your engine type and cooling system to confirm correct fitment.

How to Replace a 2021 Ford F-150 Thermostat

Replacing a failing thermostat prevents engine overheating and ensures reliable cooling performance. Follow these steps for installation:

Tools Required:

✔ Coolant catch pan 

✔ Socket wrench set 

✔ Gasket scraper 

✔ Torque wrench 

✔ New coolant

Step-by-Step Installation Guide:

  1. Drain the Coolant – Place a pan under the radiator and drain the coolant.

  2. Locate the Thermostat Housing – Follow the upper radiator hose to find the housing.

  3. Remove the Old Thermostat – Unbolt the housing and take out the old thermostat.

  4. Clean the Housing Surface – Remove any gasket residue to ensure a proper seal.

  5. Install the New Thermostat – Position it correctly and secure the housing.

  6. Refill & Bleed the Cooling System – Refill with fresh coolant and remove air pockets by running the engine.

💡 Pro Tip: Always use Ford-approved coolant to maintain optimal cooling system performance.

Signs You Need to Replace Your 2021 Ford F-150 Thermostat

🚙 Engine overheating or running too cool 

🚙 Fluctuating temperature gauge while driving 

🚙 Coolant leaks near the thermostat housing 

🚙 Poor fuel efficiency due to incorrect temperature regulation 

🚙 Check Engine Light illuminated with cooling system codes

A failing thermostat can cause serious engine damage—replace it before issues arise!

2021 Ford F-150 Thermostat Options: Choosing the Right Type

🔹 OEM Replacement Thermostat – Ideal for stock cooling performance and daily driving. 

🔹 Low-Temperature Thermostat (170°F-180°F) – Designed for performance applications, towing, and extreme climates.

 🔹 High-Flow Thermostat – Allows faster coolant circulation for enhanced heat dissipation.

Popular Related Parts for 2021 Ford F-150

🔹 2021 Ford F-150 Radiator – Ensure efficient cooling with a high-quality radiator. 

🔹 2021 Ford F-150 Water Pump – Maintain proper coolant flow for temperature regulation. 

🔹 2021 Ford F-150 Coolant Temperature Sensor – Monitor accurate engine temperature readings.

Upgrade Your Ride 🚙 – Shop Now!

Keep your 2021 Ford F-150’s engine running at peak efficiency with a reliable thermostat. Order your replacement today and prevent overheating issues!

FAQs About 2021 Ford F-150 Thermostats

How long do Ford F-150 thermostats last? Most thermostats last 60,000 to 100,000 miles, but should be replaced if symptoms of failure appear.

Can I replace my F-150’s thermostat myself? Yes! With basic tools and mechanical knowledge, thermostat replacement is a manageable DIY job.

What happens if my thermostat gets stuck open or closed?

  • Stuck open – Engine runs too cool, reducing efficiency and increasing emissions.

  • Stuck closed – Engine overheats, leading to potential damage.

Do I need to flush my coolant when replacing the thermostat? Yes, replacing the thermostat is a great time to flush old coolant and refill with fresh fluid.

What temperature thermostat should I use for my F-150?

  • OEM (Stock, ~195°F) – Ideal for daily driving and factory performance.

  • Low-Temp (170°F-180°F) – Best for performance applications, off-road use, and towing.