Dorman® 902-683 - Coolant Thermostat Housing

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Replaces Original (OE) Part #:AT4Z-8A586-B
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Product Details

Dorman Auto Repair Parts

Coolant Thermostat Housing (902-683) by Dorman®. Quantity: 2 Bolt Hole. Finish: Natural. Re-engineered to address common failure points in the original equipment, Dorman’s Engine Coolant Thermostat Housing has improved durability and resistance. It withstands the extreme changes in temperature that frequently cause housing to become brittle, crack and leak. This is more than a replacement, it’s an upgrade. Maintain the steady flow of coolant and lessen the chances of overheating.


Finish or Color: Natural
Material: Aluminum and Steel
Thermostat Opening Temperature: 180 Deg. F.
Mount Hole Quantity: 2
Mounting Hardware: Not Included
Center Bore Diameter: 1.2"
Flange Diameter: 1.2"
Flange Length: Not Applicable
Flange Thickness: Not Applicable
Flange Width: Not Applicable
Gasket Material: Rubber
Grade Type: Standard
Outlet Port Quantity: 5
Includes: Gasket or Seal
Includes: Thermostat
Without Bleeder Hole


  • Direct replacement for a proper fit every time
  • Hoses slide on for easy installation
  • High-quality construction

When you want to get OEM quality without the high dealer price, Dorman is the right choice for you. Today you can fix your vehicle properly and have money left in your pocket with a Dorman product. It will look, function, and fit just like the part from the dealer, so your vehicle will operate as it should or even better. The Dorman product is designed using state-of-the-art technologies to exactly replicate the OEM unit, then it is manufactured with modern tooling so that the end product looks and fits exactly as designed. The unit is made to the same dimensions as the OEM part with the same gauge material. Dorman is confident in the quality of their products, which is why the company covers them with a limited lifetime warranty against any defects in materials and workmanship. Easily restore the appearance and function of your vehicle with Dorman products.

Dorman Products Inc. is well-known as a leader in providing quality auto parts to the aftermarket. They have earned their reputation for excellence from over three decades of experience in providing automotive replacement parts, fasteners and service line products primarily for the automotive aftermarket. Their prestigious position stems from a unique combination of application expertise, innovative product design, and breadth of product offerings, many of which are not conveniently or economically available elsewhere.

Part Number:
OE Numbers:

Warranty Information

  • Hybrid battery – fleet: 12 months from the date of purchase.
  • Hybrid battery – non-fleet: 36 months from the date of purchase.
  • Manifold Converters: 60 months or 50,000 miles from the date of purchase.
  • Heavy Duty DPF / DOC: 24 months from the date of purchase.
  • Light Duty DPF / DOC: 24 months or 36,000 miles from the date of purchase.
  • Heavy Duty EGR Coolers: 36 months from the date of purchase.
  • Light Duty EGR Coolers: Limited Lifetime
  • All other products: lifetime.

Dorman Products warrants that the product is free from defects in material and workmanship under normal use and service for the period stated above. Dorman will replace any of its products that in Dorman's reasonable determination does not comply with the foregoing warranty. This warranty becomes null and void if the damage is caused by: misuse, abuse or accident; the attachment of any unauthorized accessory; alteration to the product; improper installation; exposure to harsh weather and/or chemicals; or lack of proper maintenance. This warranty also becomes null and void if the product is opened or any sticker is tampered with, broken, or missing, or if the damage is caused by any other condition that is beyond the control of Dorman Products.

In all cases, Dorman shall not be responsible for any type of incidental, consequential, or special damages. All other warranties, including the implied warranties of fitness for a particular purpose and the implied warranty of merchantability, are excluded.

By accepting this product, you hereby waive and release any claim now or hereafter existing against Dorman Products, its employees, officers, directors, agents and customers, on account of any and all claims, demands, suits, causes of action and all legal proceedings, whether civil or criminal, damages, losses, liabilities, (including, but not limited to, strict liability in tort), obligations, penalties, judgments or fines and other sanctions.

Federal and/or state laws may provide you with other warranties for this product. Some states do not allow the exclusion or limitation of incidental or consequential damages.

Magnuson-Moss Warranty Act:
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More

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Low Prices Price match guarantee
In-House Experts We know our products
Guaranteed Fitment Always the correct part
Easy Returns Quick & Hassle Free

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