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Motorad CH8778 Engine Coolant Thermostat Housing - Lower
| Brand | Motorad CH8778 |
|---|---|
| Position | Lower |
| Color | Black |
| Gasket Or Seal Included | Yes |
| Mounting Hole Quantity | 3 |
| Bolts Included | No |
| Color | Black |
| Gasket or Seal included | Yes |
| Gasket/Seal Material | Rubber |
| Gasket/Seal Material | Rubber |
| Hardware included | No |
| Material | Plastic |
| Mount Hole Quantity | 3 |
| Number Of Bolt Holes | 3 |
| Number Of Gaskets | 0 |
| Number Of Outlet Ports | 4 |
| Number Of Seals | 1 |
| Fits | Ford, Lincoln, Mazda, and Mercury · 17 vehicles |
OE supplier quality. Built to meet or exceed OEM standards.
Thermal shock validated. Proprietary material stands up to demanding cooling systems.
Seal included. Rubber gasket helps ensure a leak-tested fit.
Cross-references Dorman - OE Solutions 902-778, Four Seasons 86076 and Gates CO34819 for the same application. See all 9.
Engine Coolant Thermostat Housing
Motorad CH8778 is an engine coolant thermostat housing built for OE-style cooling system service. It is manufactured to OEM quality standards, thermal shock validated, and 100% leak tested for dependable sealing in demanding applications.
Compatible With 2003-2008 Mazda 6, 2005-2008 Mercury Mariner, 2006-2009 Mercury Milan, 2007-2008 Ford Escape, and 2006 Lincoln Zephyr in lower-position applications.
Key Features
- Black plastic thermostat housing with a rubber seal
- Gasket or seal included for direct replacement service
- 4 outlet ports and 3 mounting holes
- Thermal shock validated for cooling system temperature changes
- 100% leak tested before release
- OE supplier manufacturing standards for consistent fit and function
Detailed Description
This Motorad thermostat housing, part number CH8778, is engineered as an OE-style replacement for lower cooling system locations on select Ford, Mercury, and Mazda vehicles. It is built from plastic with a black finish and includes a rubber gasket/seal to support proper sealing at the coolant outlet. The housing is designed for applications such as the Mazda 6, Ford Escape, Mercury Mariner, Mercury Milan, and Lincoln Zephyr, where a reliable coolant passage and thermostat housing interface are required.
This part cross-references Dorman OE Solutions 902-778 for the same application.
Common Problems This Part Can Address
- Coolant leaks at the thermostat housing
- Cracked or warped plastic housing surfaces
- Failed sealing at the coolant outlet connection
- Overheating caused by housing leakage or poor coolant flow control
- Service issues from a damaged lower thermostat housing assembly
Installation Notes and Tips
- Verify lower-position fitment before ordering; this part is listed for specific year, make, and model applications.
- Inspect the mating surface and coolant hoses for wear, corrosion, or residue before installation.
- Replace contaminated coolant and bleed the cooling system after installation.
- Confirm the seal seats evenly and the mounting holes align before tightening.
Quality Assurance
Motorad manufactures this thermostat housing to OEM quality standards as an OE supplier. CH8778 is thermal shock validated and 100% leak tested, with construction intended to meet or exceed OEM requirements for cooling system service.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2009 | Mercury | Milan | 3.0L | V6 | Lower | Includes housing and gasket; Includes Only Housing |
| 2008 | Ford | Escape | 3.0L | V6 | Lower | Includes housing and gasket; Includes Only Housing |
| 2008 | Mazda | 6 | 3.0L | V6 | Lower | Engine Coolant Water Outlet with housing and gasket included. |
| 2008 | Mercury | Mariner | 3.0L | V6 | Lower | Includes housing and gasket; Includes Only Housing |
| 2008 | Mercury | Milan | 3.0L | V6 | Lower | Includes housing and gasket; Includes Only Housing |
| 2007 | Ford | Escape | 3.0L | V6 | Lower | Includes housing and gasket; Includes Only Housing |
| 2007 | Mazda | 6 | 3.0L | V6 | Lower | Engine Coolant Water Outlet with housing and gasket included. |
| 2007 | Mercury | Mariner | 3.0L | V6 | Lower | Includes housing and gasket; Includes Only Housing |
| 2007 | Mercury | Milan | 3.0L | V6 | Lower | Includes housing and gasket; Includes Only Housing |
| 2006 | Lincoln | Zephyr | 3.0L | V6 | Lower | Includes housing and gasket; Includes Only Housing |
| 2006 | Mazda | 6 | 3.0L | V6 | Lower | Engine Coolant Water Outlet with housing and gasket included. |
| 2006 | Mercury | Mariner | 3.0L | V6 | Lower | Includes housing and gasket; Includes Only Housing |
| 2006 | Mercury | Milan | 3.0L | V6 | Lower | Includes housing and gasket; Includes Only Housing |
| 2005 | Mazda | 6 | 3.0L | V6 | Lower | Engine Coolant Water Outlet with housing and gasket included. |
| 2005 | Mercury | Mariner | 3.0L | V6 | Lower | Includes housing and gasket; Includes Only Housing |
| 2004 | Mazda | 6 | 3.0L | V6 | Lower | Engine Coolant Water Outlet with housing and gasket included. |
| 2003 | Mazda | 6 | 3.0L | V6 | Lower | Engine Coolant Water Outlet with housing and gasket included. |
| No rows match your filter. | ||||||