OE Quality
60-Day Returns

Dorman 902-5131 Engine Coolant Thermostat Housing Assembly
Reliable Engine Coolant Thermostat Housing Assembly for Acura and Honda
The Dorman 902-5131 Engine Coolant Thermostat Housing Assembly is designed to provide precise temperature regulation for your Acura Civic, Honda CR-V, or Honda RSX. Crafted from durable black plastic, this assembly includes a thermostat and gasket to ensure a secure and efficient fit.
- Material: High-quality black plastic housing
- Includes thermostat with 172°F opening temperature
- Comes with a gasket for proper sealing
- Features one outlet port and three mounting holes
- Flange dimensions: 3.476" length, 3.642" width, 0.271" thickness
- Compatible with Acura Civic, Honda CR-V, and Honda RSX models
- Part number 902-5131 for accurate replacement
Product Details and Specifications
This engine coolant thermostat housing assembly by Dorman is engineered to meet the cooling system requirements of select Acura and Honda vehicles. The plastic construction offers resistance to corrosion and heat, while the included thermostat opens at 172 degrees Fahrenheit to regulate engine temperature effectively. The housing features a single outlet port and three mounting holes with precise bolt hole center measurements (2.454 in, 2.408 in, and 2.53 in) to ensure proper alignment during installation. The package contains one thermostat housing and one gasket, but mounting hardware is not included.
Compatible Vehicles and Applications
This thermostat housing assembly is compatible with the following vehicles:
- Acura Civic
- Honda CR-V
- Honda RSX
Use this part number 902-5131 when searching for a replacement thermostat housing assembly for these models to ensure compatibility and performance.
Common Issues Addressed by This Thermostat Housing Assembly
- Engine overheating due to faulty thermostat housing leaks
- Coolant leaks caused by damaged or worn housing gaskets
- Irregular engine temperature regulation affecting performance
- Cracked or warped thermostat housing compromising coolant flow
- Failed thermostat causing engine temperature fluctuations
Installation Notes and Tips
Before installation, ensure the engine is cool and the cooling system is depressurized. Remove the old thermostat housing carefully to avoid damaging surrounding components. Clean the mounting surface thoroughly to ensure a proper seal with the included gasket. Since mounting hardware is not included, reuse existing bolts if they are in good condition or source replacements as needed. Verify the thermostat orientation matches the original setup to maintain correct coolant flow.
Quality Assurance and Warranty Information
Dorman’s 902-5131 thermostat housing assembly is manufactured to meet OEM specifications for fit and function. The plastic housing material is selected for durability and resistance to heat and corrosion. This part includes a thermostat and gasket to provide a complete solution for your cooling system needs. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship.
| Brand | Dorman |
| Part Number | 902-5131 |
| Bleeder Hole | No |
| Bolt Hole Center To Bolt Hole Center | 2.454 in; 2.408 in; 2.53 in |
| Color | Black |
| Flange Length | 3.476 |
| Flange Thickness | 0.271 |
| Flange Width | 3.642 |
| Gasket Or Seal Included | Yes |
| Gasket Type | Gasket |
| Grade Type | Regular |
| Inside Diameter | 1.07 |
| Material | Plastic |
| Mounting Hardware Included | No |
| Mounting Hole Quantity | 3 |
| Outlet Port Quantity | 1 |
| Package Contents | 1 Thermostat housing; 1 Gasket |
| Thermostat Included | Yes |
| Thermostat Opening Temperature | 172 Deg. F |
This part fits 14 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2006 | Acura | RSX | 2.0L | L4 | N/A | Engine coolant thermostat housing assembly with integrated cover. |
| 2006 | Honda | CR-V | 2.4L | L4 | N/A | Engine coolant thermostat housing assembly with integrated cover. |
| 2005 | Acura | RSX | 2.0L | L4 | N/A | Engine coolant thermostat housing assembly with integrated cover. |
| 2005 | Honda | Civic | 2.0L | L4 | N/A | Engine coolant thermostat housing assembly with integrated cover. |
| 2005 | Honda | CR-V | 2.4L | L4 | N/A | Engine coolant thermostat housing assembly with integrated cover. |
| 2004 | Acura | RSX | 2.0L | L4 | N/A | Engine coolant thermostat housing assembly with integrated cover. |
| 2004 | Honda | Civic | 2.0L | L4 | N/A | Engine coolant thermostat housing assembly with integrated cover. |
| 2004 | Honda | CR-V | 2.4L | L4 | N/A | Engine coolant thermostat housing assembly with integrated cover. |
| 2003 | Acura | RSX | 2.0L | L4 | N/A | Engine coolant thermostat housing assembly with integrated cover. |
| 2003 | Honda | Civic | 2.0L | L4 | N/A | Engine coolant thermostat housing assembly with integrated cover. |
| 2003 | Honda | CR-V | 2.4L | L4 | N/A | Engine coolant thermostat housing assembly with integrated cover. |
| 2002 | Acura | RSX | 2.0L | L4 | N/A | Engine coolant thermostat housing assembly with integrated cover. |
| 2002 | Honda | Civic | 2.0L | L4 | N/A | Engine coolant thermostat housing assembly with integrated cover. |
| 2002 | Honda | CR-V | 2.4L | L4 | N/A | Engine coolant thermostat housing assembly with integrated cover. |
* 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.