Ford Mazda Mercury Thermostat Housing

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Vehicle Fit
Warranty & Shipping
Product Reviews

If your vehicle is leaking coolant around the thermostat, or your thermostat housing cooling outlet is broken or cracked, this could be your solution.

Kit Specifications:

  • Direct replacement
  • Replaces dealer part numbers: YU3Z 8A586 AA, YU3Z8A586AA
  • Kit contains:
    • (1) Thermostat housing / Cooling Outlet
    • (1) O-Ring
    • (1) Thermostat
    • (1) Thermostat outlet or neck
  • Built to strict quality control standards
  • Plastic construction
  • Fits the following Ford engines as listed per application:
    • V6 4.0L
  • Electrical sensors are not included. Buyer will need to reuse original sensors.
    • Correct only for models clip-in style coolant sensor

Over time from thermal expansion and contraction the mating surfaces on the housing can warp or crack. If you are experiencing any of these issues replace your thermostat housing/ cooling outlet with our direct replacement part.

Item Condition: New

Attention California Customers:

WARNING: Cancer and Reproductive Harm -

Lifetime Warranty

This item is backed by our limited lifetime warranty. In the event this item should fail due to manufacturing defects during intended use, we will replace the part free of charge.

5.00/ 5.0
3 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
2011 Ford Ranger Thermostat housing
The part was a perfect fit. Your price was unmatched by other suppliers.
September 23, 2017
Minor leak now corrected
Finally stopped my minor coolant leak! Discovered a coolant leak after replacing the thermostat about 4 months ago. Couldnt determine source of minor leak but noted it was gradually draining my reservoir. This replacement was relatively easy to install but it did require patience and finesse. The design of other vehicle components was the problem not this part from 1A-Auto.
October 13, 2017
thermostat housing
product fit and no more smelly leaksgreat product cheap price
August 5, 2018
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Fits the following Makes:

Year Make Model Description
2001Ford Explorer Ford Explorer V6 4.0L Thermostat Housing
2001-2006Ford Explorer Sport Trac Ford Explorer Sport Trac V6 4.0L Thermostat Housing
2001-2011Ford Ranger Ford Ranger V6 4.0L Thermostat Housing
2001-2008Mazda B4000 Truck Mazda B4000 Truck Thermostat Housing
2000-2001Mercury Mountaineer Mercury Mountaineer V6 4.0L Thermostat Housing

Part Interchange

Brand Label Part Number
DIY Solutions HVA00849

This item may be interchangeable with parts from other brands with the above part numbers. This information is provided only for reference and does not guarantee that the item you are purchasing is identical to parts with part numbers from the brands listed above. To confirm that this item fits your vehicle, use the above "Check Vehicle Fit" option.

Part 1AEMX00328
In Stock

Orders must be placed by 2pm ET
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Estimated Arrival Cost

Deliveries made to PO Boxes and FPO may take longer. See our Shipping & Delivery for more information.

DIY Solutions
Brand #: HVA00849