OE Quality
60-Day Returns

Dorman 902-1998 Engine Coolant Thermostat Housing Assembly
Overview of Dorman Engine Coolant Thermostat Housing Assembly
The Dorman 902-1998 Engine Coolant Thermostat Housing Assembly is designed for reliable cooling system performance in select Ford and Mazda vehicles. This aluminum housing assembly provides a durable and precise fit for models such as the Ford Explorer, Ranger, and Mazda B4000.
- Constructed from corrosion-resistant aluminum with a silver finish
- Includes an O-ring type gasket for a secure seal
- Features three outlet ports and three mounting holes for stable installation
- Comes with two clamps and one hose for assembly convenience
- Compatible with Ford Explorer, Explorer Sport Trac, Ranger, and Mazda B4000
Detailed Product Features and Specifications
This thermostat housing assembly is engineered with a 1.35-inch inside diameter and a flange measuring 2.36 inches in length, 2.79 inches in both width and thickness, ensuring a precise fit within the cooling system. The assembly does not include a thermostat but is designed to accommodate a thermostat with a 120-degree opening temperature. The package includes the housing, two clamps, and one hose, but mounting hardware is not included. The gasket type is an O-ring, which helps maintain a tight seal to prevent coolant leaks. The bolt hole center-to-center distance is 2.44 inches, supporting secure mounting on compatible vehicles.
Compatible Vehicles and Applications
This Dorman 902-1998 thermostat housing assembly is compatible with several Ford and Mazda models, specifically the Ford Explorer, Explorer Sport Trac, Ranger, and Mazda B4000. It is suitable for owners seeking a replacement part that matches OEM specifications for these vehicles' cooling systems.
- Replaces worn or cracked thermostat housing
- Prevents coolant leaks and overheating issues
- Restores proper coolant flow and engine temperature regulation
- Addresses flange or gasket seal failures
- Supports maintenance of the vehicle’s cooling system integrity
Installation Notes and Tips
When installing the Dorman 902-1998 thermostat housing assembly, ensure the mating surfaces are clean and free of debris to achieve a proper seal with the included O-ring gasket. Since mounting hardware is not included, use the original bolts or appropriate replacements. Verify the thermostat opening temperature matches the vehicle’s specifications, as this assembly does not include a thermostat. Proper torque on mounting bolts is essential to avoid leaks or damage to the housing.
Quality Assurance and Warranty
Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 902-1998 thermostat housing assembly is made from durable aluminum to resist corrosion and wear. This product includes a gasket to ensure a reliable seal. While specific warranty details vary, Dorman typically offers limited warranties covering defects in material and workmanship to provide confidence in product quality.
| Brand | Dorman |
| Part Number | 902-1998 |
| Bleeder Hole | No |
| Bolt Hole Center To Bolt Hole Center | 2.44 |
| Color | Silver |
| Flange Length | 2.36 |
| Flange Thickness | 2.79 |
| Flange Width | 2.79 |
| Gasket Or Seal Included | Yes |
| Gasket Type | O-Ring |
| Grade Type | Regular |
| Inside Diameter | 1.35 |
| Material | Aluminum |
| Mounting Hardware Included | No |
| Mounting Hole Quantity | 3 |
| Outlet Port Quantity | 3 |
| Package Contents | 1 Thermostat Housing; 2 Clamps; 1 Hose |
| Thermostat Included | No |
| Thermostat Opening Temperature | 120 Deg |
This part fits 24 vehicles. Search below:
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2011 | Ford | Ranger | 4.0L | V6 | N/A | Metal Housing Assembly with 1 Clip-In Style Sensor | |
| 2010 | Ford | Ranger | 4.0L | V6 | N/A | Metal Housing Assembly with 1 Clip-In Style Sensor | |
| 2010 | Mazda | B4000 | 4.0L | V6 | N/A | Assembly; Metal Housing | |
| 2009 | Ford | Ranger | 4.0L | V6 | N/A | Metal Housing Assembly with 1 Clip-In Style Sensor | |
| 2009 | Mazda | B4000 | 4.0L | V6 | N/A | Assembly; Metal Housing | |
| 2008 | Ford | Ranger | 4.0L | V6 | N/A | Metal Housing Assembly with 1 Clip-In Style Sensor | |
| 2008 | Mazda | B4000 | 4.0L | V6 | N/A | Metal Housing; Assembly | |
| 2007 | Ford | Ranger | 4.0L | V6 | N/A | Metal Housing Assembly with 1 Clip-In Style Sensor | |
| 2007 | Mazda | B4000 | 4.0L | V6 | N/A | Metal Housing; Assembly | |
| 2006 | Ford | Ranger | 4.0L | V6 | N/A | Metal Housing Assembly with 1 Clip-In Style Sensor | |
| 2006 | Mazda | B4000 | 4.0L | V6 | N/A | Metal Housing; Assembly | |
| 2005 | Ford | Explorer Sport Trac | 4.0L | V6 | N/A | Metal Housing Assembly with 1 Clip-In Style Sensor | |
| 2005 | Ford | Ranger | 4.0L | V6 | N/A | Metal Housing Assembly with 1 Clip-In Style Sensor | |
| 2005 | Mazda | B4000 | 4.0L | V6 | N/A | Metal Housing; Assembly | |
| 2004 | Ford | Explorer Sport Trac | 4.0L | V6 | N/A | Metal Housing Assembly with 1 Clip-In Style Sensor | |
| 2004 | Ford | Ranger | 4.0L | V6 | N/A | Metal Housing Assembly with 1 Clip-In Style Sensor | |
| 2004 | Mazda | B4000 | 4.0L | V6 | N/A | Metal Housing; Assembly | |
| 2003 | Ford | Explorer Sport Trac | 4.0L | V6 | N/A | Metal Housing Assembly with 1 Clip-In Style Sensor | |
| 2003 | Mazda | B4000 | 4.0L | V6 | N/A | Metal Housing; Assembly | |
| 2002 | Ford | Explorer Sport Trac | 4.0L | V6 | N/A | Metal Housing Assembly with 1 Clip-In Style Sensor | |
| 2002 | Mazda | B4000 | 4.0L | V6 | N/A | Metal Housing; Assembly | |
| 2001 | Ford | Explorer | Postal | 4.0L | V6 | N/A | Metal Housing Assembly with 1 Clip-In Style Sensor |
| 2001 | Ford | Explorer Sport Trac | 4.0L | V6 | N/A | Metal housing assembly with 1 clip-in style sensor, suitable for vehicles manufactured from 7/24/00. | |
| 2001 | Mazda | B4000 | 4.0L | V6 | N/A | Metal Housing; Assembly |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.