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Dorman 902-858 Engine Coolant Thermostat Housing Assembly
| Brand | Dorman 902-858 |
|---|---|
| Bleeder Hole | No |
| Bolt Hole Center To Bolt Hole Center | 2.7 |
| Color | Black |
| Flange Length | 3.5 |
| Flange Thickness | 0.25 |
| Flange Width | 1.4 |
| Gasket Or Seal Included | Yes |
| Gasket Type | Gasket |
| Grade Type | Regular |
| Inside Diameter | 0.8 in; 0.6 in |
| Material | Metal |
| Mounting Hardware Included | No |
| Mounting Hole Quantity | 2 |
| Outlet Port Quantity | 1 |
| Package Contents | 1 Thermostat Housing ; 1 Water Outlet; 1 Thermostat; 1 Gasket; 1 Plug |
| Thermostat Included | Yes |
| Thermostat Opening Temperature | 180 Deg. F |
| Fits | Ford and Mercury · 9 vehicles |
OE-style replacement. Engineered to match stock fit and durability.
Metal construction. Built to handle extreme temperature changes.
Gasket included. Ready for a tighter, more complete seal.
Cross-references Delphi TA2858, Dorman - Conduct-Tite 85915 and 5F9Z18599BA for the same application. See all 4.
Engine Coolant Thermostat Housing for Ford and Mercury
Dorman 902-858 is a replacement engine coolant thermostat housing assembly built to match the fit and durability of the original housing on select vehicles. It is engineered for the thermal demands of daily driving and helps maintain proper coolant flow and engine temperature control.
- Metal housing with black finish
- Includes thermostat, gasket, water outlet, and plug
- Thermostat opening temperature: 180 degrees F
- 2 mounting holes with 2.7 in. bolt hole center spacing
- 1 outlet port with 0.8 in. and 0.6 in. inside diameters
- Gasket included for sealing at the housing interface
Fitment Details
Compatible with 2005-2007 Ford Five Hundred, N/A. Compatible with 2005-2007 Ford Freestyle, N/A. Compatible with 2005-2007 Mercury Montego, N/A. This Dorman 902-858 thermostat housing assembly is a direct-fit option for owners searching for a thermostat housing for 2005-2007 Ford Five Hundred, Ford Freestyle, or Mercury Montego cooling system service.
This part cross-references Delphi TA2858 for the same application.
What It Helps Address
- Cracked or leaking thermostat housing
- Coolant seepage at the housing seal
- Improper engine warm-up from a worn thermostat assembly
- Cooling system service on select Ford and Mercury models
- Replacement of a damaged water outlet connection
Installation Notes
Verify the housing shape, port size, and mounting-hole spacing against the original part before installation. Clean the mating surface thoroughly and replace any worn coolant hoses or clamps during service. Use the included gasket to ensure a proper seal, and refill and bleed the cooling system according to the vehicle service procedure.
Quality Assurance
Dorman designs this thermostat housing assembly to match stock fit and durability while standing up to extreme temperature changes for extended service life. It is a regular-grade replacement part for select Ford Five Hundred, Ford Freestyle, and Mercury Montego applications.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2007 | Ford | Five Hundred | 3.0L | V6 | N/A | — |
| 2007 | Ford | Freestyle | 3.0L | V6 | N/A | — |
| 2007 | Mercury | Montego | 3.0L | V6 | N/A | — |
| 2006 | Ford | Five Hundred | 3.0L | V6 | N/A | — |
| 2006 | Ford | Freestyle | 3.0L | V6 | N/A | — |
| 2006 | Mercury | Montego | 3.0L | V6 | N/A | — |
| 2005 | Ford | Five Hundred | 3.0L | V6 | N/A | — |
| 2005 | Ford | Freestyle | 3.0L | V6 | N/A | — |
| 2005 | Mercury | Montego | 3.0L | V6 | N/A | — |
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