OE Quality
60-Day Returns

Gates CO34758 Engine Coolant Thermostat / Water Outlet Assembly
Overview of Gates Coolant Outlet CO34758 for Ford Mustang
The Gates Coolant Outlet CO34758 is designed specifically for Ford Mustang models, providing a reliable engine coolant thermostat and water outlet assembly. Engineered with durable plastic material, this coolant outlet assembly ensures efficient coolant flow and temperature regulation for your Mustang's engine.
- Constructed from high-quality plastic for durability
- Includes coolant outlet, seals, and thermostat for complete assembly
- Features 3 bolt holes for secure mounting
- By-pass holes included to maintain proper coolant circulation
- Multiple outlet diameters for precise fit: outside diameters of 1.496 and 0.717 inches, inside diameters of 1.248 and 0.547 inches
- Comes with 2 seals, no gaskets included
About the Gates Coolant Outlet Product Line
The Gates Coolant Outlet product line focuses on providing reliable and precise cooling system components, including thermostat and water outlet assemblies. This line is engineered to meet the specific requirements of various vehicle models, including the Ford Mustang, ensuring proper coolant flow and temperature control. The CO34758 part is a key component within this line, designed to maintain optimal engine performance by managing coolant circulation effectively.
Detailed Product Description
The Gates CO34758 coolant outlet assembly is made from durable plastic, designed to withstand the thermal and mechanical stresses of engine operation. It features two outlet sizes with outside diameters of 1.496 inches and 0.717 inches, and corresponding inside diameters of 1.248 inches and 0.547 inches, allowing for precise integration with the Mustang's cooling system. The assembly includes three bolt holes for secure installation and two seals to prevent leaks. Additionally, the built-in by-pass holes with inside and outside diameters of 0.895 inches and 1.07 inches respectively, help maintain consistent coolant flow, preventing overheating and ensuring efficient engine temperature regulation.
Common Applications and Issues Addressed
- Replacement of worn or damaged coolant outlet assemblies in Ford Mustang vehicles
- Resolving coolant leaks caused by cracked or degraded plastic outlets
- Improving thermostat function to prevent engine overheating
- Addressing coolant flow restrictions due to clogged or faulty outlets
- Maintaining proper engine temperature for optimal performance
Installation Notes and Tips
When installing the Gates CO34758 coolant outlet assembly, ensure the mounting surface is clean and free of old gasket material, even though this part does not include gaskets. Use the included seals to prevent leaks and tighten the three bolts evenly to the manufacturer's torque specifications. Verify that the by-pass holes are unobstructed to maintain proper coolant circulation. It is recommended to inspect the thermostat function during installation to confirm proper operation.
Quality Assurance and Warranty
Gates is a recognized manufacturer of automotive cooling components, and the CO34758 coolant outlet assembly is produced to meet industry standards for fit and function. While this part is not an exact OE replacement, it is engineered to provide reliable performance for Ford Mustang cooling systems. Please refer to Gates' warranty policy for specific coverage details.
| Brand | Gates |
| Part Number | CO34758 |
| Position | Coolant Outlet |
| .895 | |
| 1.07 | |
| 2 | |
| Yes | |
| Bolt Hole Quantity | 3 |
| By-Pass Holes | Yes |
| By-Pass Inside Diameter (in) | .895 |
| By-Pass Outside Diameter (in) | 1.07 |
| Contents | Coolant Outlet, Seals, Thermostat |
| Gasket Quantity | 0 |
| Material | Plastic |
| Number of Bolt Holes | 3 |
| Number of Gaskets | 0 |
| Number of Seals | 2 |
| OE Exact | No |
| Outlet Inside Diameter | .547 |
| Outlet Inside Diameter | 1.248 |
| Outlet Inside Diameter 1 (in) | 1.248 |
| Outlet Inside Diameter 2 (in) | .547 |
| Outlet Outside Diameter | .717 |
| Outlet Outside Diameter | 1.496 |
| Outlet Outside Diameter 1 (in) | 1.496 |
| Outlet Outside Diameter 2 (in) | .717 |
| Type | Coolant Outlet |
| Type | Coolant Outlet Assembly |
This part fits 6 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2010 | Ford | Mustang | 4.0L | V6 | GAS | N/A | Coolant Outlet Assembly with Thermostat; 190 Degree; OE Temperature; Seal included; Coolant Outlet |
| 2009 | Ford | Mustang | 4.0L | V6 | GAS | N/A | Coolant Outlet Assembly with Thermostat; 190 Degree; OE Temperature; Seal included; Coolant Outlet |
| 2008 | Ford | Mustang | 4.0L | V6 | GAS | N/A | Coolant Outlet Assembly with Thermostat; 190 Degree; OE Temperature; Seal included; Coolant Outlet |
| 2007 | Ford | Mustang | 4.0L | V6 | GAS | N/A | Coolant Outlet Assembly with Thermostat; 190 Degree; OE Temperature; Seal included; Coolant Outlet |
| 2006 | Ford | Mustang | 4.0L | V6 | GAS | N/A | Coolant Outlet Assembly with Thermostat; 190 Degree; OE Temperature; Seal included; Coolant Outlet |
| 2005 | Ford | Mustang | 4.0L | V6 | GAS | N/A | Coolant Outlet Assembly with Thermostat; 190 Degree; OE Temperature; Seal included; 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.