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Gates CO35025 Engine Coolant Thermostat Housing
Overview of Gates Coolant Outlet Thermostat Housing CO35025
The Gates Coolant Outlet Engine Coolant Thermostat Housing CO35025 is designed for reliable cooling system performance in select Mazda vehicles. Engineered from durable aluminum, this thermostat housing ensures proper coolant flow and temperature regulation for Mazda 626, MX-6, Protege, and Protege5 models.
- Constructed from corrosion-resistant aluminum material
- Exact OE replacement for precise fit and function
- Features two bolt holes for secure mounting
- Outlet outside diameter: 1.18 inches; inside diameter: 0.87 inches
- Compatible with Mazda 626, MX-6, Protege, and Protege5
About the Gates Coolant Outlet Product Line
The Gates Coolant Outlet line focuses on high-quality thermostat housings and related cooling components designed to meet or exceed original equipment specifications. This product line emphasizes durability and exact fitment, helping maintain optimal engine temperature control and preventing coolant leaks in various vehicle applications, including the Mazda models supported by part number CO35025.
Product Details and Specifications
This thermostat housing is crafted from aluminum, providing strength and resistance to corrosion under high-temperature conditions. The part features two bolt holes for secure installation and an outlet with an outside diameter of 1.18 inches and an inside diameter of 0.87 inches, ensuring proper coolant flow. The Gates CO35025 is an exact OE replacement, guaranteeing compatibility and performance equivalent to the original part installed on Mazda 626, MX-6, Protege, and Protege5 vehicles.
Common Applications and Problem Resolution
- Replacement for cracked or leaking thermostat housings
- Restores proper coolant flow and engine temperature regulation
- Prevents overheating caused by faulty thermostat housing
- Eliminates coolant leaks that can lead to engine damage
- Ensures secure mounting with two-bolt design for stability
Installation Notes and Tips
When installing the Gates CO35025 thermostat housing, ensure the mating surfaces are clean and free of old gasket material, as this part does not include a gasket. Use the two bolt holes to securely fasten the housing to the engine block. Verify outlet diameters match the vehicle’s coolant hose specifications for a proper seal. Follow vehicle-specific service manual instructions for torque specifications and installation procedures.
Quality Assurance and Warranty
Gates provides this thermostat housing as an exact OE replacement, manufactured to meet original equipment standards. The aluminum construction offers durability and corrosion resistance for long service life. While specific warranty details are not provided here, Gates products typically come with manufacturer-backed quality assurance to support reliable performance in Mazda 626, MX-6, Protege, and Protege5 cooling systems.
| Brand | Gates |
| Part Number | CO35025 |
| Position | Coolant Outlet |
| Material | Aluminum |
| Outlet Outside Diameter | 1.18 |
| Bolt Hole Quantity | 2 |
| Type | Thermostat housing |
| Gasket Quantity | 0 |
| Outlet Inside Diameter | .87 |
| 9841 | 0 |
| 9848 | No |
| Contents | Thermostat housing |
| OE Exact | Yes |
This part fits 22 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2003 | Mazda | Protege | 2.0L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2003 | Mazda | Protege5 | 2.0L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2002 | Mazda | 626 | 2.0L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2002 | Mazda | Protege | 2.0L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2002 | Mazda | Protege5 | 2.0L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2001 | Mazda | 626 | 2.0L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2001 | Mazda | Protege | 2.0L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2000 | Mazda | 626 | 2.0L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2000 | Mazda | Protege | 1.8L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 1999 | Mazda | 626 | 2.0L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 1999 | Mazda | Protege | 1.8L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 1998 | Mazda | 626 | 2.0L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 1997 | Mazda | 626 | 2.0L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 1997 | Mazda | MX-6 | 2.0L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 1996 | Mazda | 626 | 2.0L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 1996 | Mazda | MX-6 | 2.0L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 1995 | Mazda | 626 | 2.0L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 1995 | Mazda | MX-6 | 2.0L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 1994 | Mazda | 626 | 2.0L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 1994 | Mazda | MX-6 | 2.0L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 1993 | Mazda | 626 | 2.0L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 1993 | Mazda | MX-6 | 2.0L | L4 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
* 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.