OE Quality
60-Day Returns

Gates 34833 Engine Coolant Thermostat
Overview of Gates Integrated Housing Thermostat 34833
The Gates Integrated Housing Thermostat 34833 is engineered for precise engine temperature regulation in select Mercedes-Benz vehicles. Designed specifically for the C250 and SLK250 models, this thermostat ensures optimal coolant flow and engine performance.
- Integrated housing thermostat design for streamlined installation
- Start to open temperature at 103°C (217°F) for accurate thermal control
- Five bolt holes for secure mounting
- Includes one jiggle pin/check valve to prevent air lock
- OE exact fit and quality for Mercedes-Benz C250 and SLK250
- Outlet inside diameters of 1.728 inches and 0.985 inches for proper coolant flow
- Outlet outside diameter of 0.721 inches
- Single seal included to maintain system integrity
Detailed Product Description
The Gates Integrated Housing Thermostat 34833 combines the thermostat and housing into a single unit, simplifying the cooling system assembly for Mercedes-Benz C250 and SLK250 models. This integrated design reduces potential leak points and improves reliability. The thermostat opens at 103°C (217°F), allowing coolant to circulate once the engine reaches optimal operating temperature. Featuring five bolt holes, the housing ensures a secure and stable fit. The inclusion of a jiggle pin/check valve helps eliminate air pockets within the cooling system, promoting consistent coolant flow. With outlet inside diameters of 1.728 inches and 0.985 inches, and an outside diameter of 0.721 inches, this part matches OEM specifications precisely. The single seal maintains a tight connection between components, preventing coolant leaks.
Application and Common Issues Addressed
- Regulates engine temperature to prevent overheating in Mercedes-Benz C250 and SLK250
- Replaces faulty or stuck thermostats causing poor engine performance
- Eliminates coolant leaks from worn or damaged thermostat housings
- Prevents air lock in the cooling system with integrated jiggle pin/check valve
- Restores proper coolant flow for efficient engine operation
Installation Notes and Tips
When installing the Gates Integrated Housing Thermostat 34833, ensure the engine is cool before removal to avoid injury. Verify the gasket surface is clean and free of debris to ensure a proper seal. Tighten the five mounting bolts evenly to the manufacturer’s torque specifications to prevent warping or leaks. Since this thermostat is non-electric, no wiring connections are required. Check coolant levels and bleed the cooling system after installation to remove trapped air.
Quality Assurance and Warranty
This Gates thermostat and housing assembly meets OE exact specifications for Mercedes-Benz C250 and SLK250 models, ensuring reliable performance and fitment. The part number 34833 is manufactured under strict quality controls to maintain durability and thermal accuracy. While specific warranty details are not provided, Gates products typically adhere to industry standards for automotive replacement parts.
| Brand | Gates |
| Part Number | 34833 |
| Position | Integrated Housing Thermostat |
| Outlet Outside Diameter | .721 |
| Bolt Hole Quantity | 5 |
| Type | Integrated housing thermostat |
| Jiggle Pin Weep Hole | No |
| Start to Open Temperature | 103 |
| Start to Open Temperature | 217 |
| Outlet Inside Diameter | .985 |
| Outlet Inside Diameter | 1.728 |
| Electric | No |
| 9841 | 1 |
| Check Valve | Yes |
| Electric | No |
| Jiggle Pin/Check Valve | Yes |
| Number of Bolt Holes | 5 |
| Number of Jiggle Pins/Check Valves | 1 |
| Number of Seals | 1 |
| OE Comparison Rating | Oe exact |
| OE Exact | Yes |
| Outlet Inside Diameter 1 (in) | 1.728 |
| Outlet Inside Diameter 2 (in) | .985 |
| Outlet Inside Diameter 3 (in) | .985 |
| Outlet Outside Diameter 2 (in) | .721 |
| Outlet Outside Diameter 3 (in) | .721 |
| Temperature (C) | 103 |
This part fits 8 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2015 | Mercedes-Benz | C250 | 1.8L | L4 | GAS | N/A | 217 Degree; OE Temperature; Seal included; Integrated Housing Thermostat |
| 2015 | Mercedes-Benz | SLK250 | 1.8L | L4 | GAS | N/A | 217 Degree; OE Temperature; Seal included; Integrated Housing Thermostat |
| 2014 | Mercedes-Benz | C250 | 1.8L | L4 | GAS | N/A | 217 Degree; OE Temperature; Seal included; Integrated Housing Thermostat |
| 2014 | Mercedes-Benz | SLK250 | 1.8L | L4 | GAS | N/A | 217 Degree; OE Temperature; Seal included; Integrated Housing Thermostat |
| 2013 | Mercedes-Benz | C250 | 1.8L | L4 | GAS | N/A | 217 Degree; OE Temperature; Seal included; Integrated Housing Thermostat |
| 2013 | Mercedes-Benz | SLK250 | 1.8L | L4 | GAS | N/A | 217 Degree; OE Temperature; Seal included; Integrated Housing Thermostat |
| 2012 | Mercedes-Benz | C250 | 1.8L | L4 | GAS | N/A | 217 Degree; OE Temperature; Seal included; Integrated Housing Thermostat |
| 2012 | Mercedes-Benz | SLK250 | 1.8L | L4 | GAS | N/A | 217 Degree; OE Temperature; Seal included; Integrated Housing Thermostat |
* 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.