HomeBelts and Cooling > Thermostat and HousingFacet 7.8929 Engine Coolant Thermostat
Part #: 7.8929

Facet 7.8929 Engine Coolant Thermostat

⚙️ 9 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Mercedes-Benz, GL350, ML350, and S350
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Reliable Engine Coolant Thermostat for Mercedes-Benz Models

The Facet 7.8929 engine coolant thermostat is designed specifically for Mercedes-Benz vehicles including the GL350, ML350, and S350. This thermostat helps regulate engine temperature to maintain optimal performance and prevent overheating.

  • Compatible with Mercedes-Benz GL350, ML350, and S350 models
  • Part number 7.8929 ensures precise fit and function
  • Engine coolant thermostat designed for efficient temperature control
  • Durable construction for consistent operation under varying conditions
  • Direct replacement part for reliable engine cooling system maintenance

Product Details and Functionality

The Facet 7.8929 engine coolant thermostat is engineered to maintain the correct engine operating temperature by controlling coolant flow. This part is essential for the cooling system of Mercedes-Benz GL350, ML350, and S350 models, ensuring the engine warms up quickly and stays within the ideal temperature range. Proper thermostat function helps improve fuel efficiency, reduce emissions, and prevent engine damage caused by overheating or running too cold.

Common Issues Addressed by This Thermostat

  • Engine overheating due to stuck closed thermostat
  • Poor heater performance from thermostat stuck open
  • Inconsistent engine temperature readings
  • Reduced fuel efficiency linked to improper engine temperature
  • Potential engine damage from prolonged overheating

Installation Notes and Tips

  • Ensure the engine is cool before beginning installation
  • Drain coolant to prevent spills and contamination
  • Replace gasket or seal as needed to avoid leaks
  • Verify correct orientation of the thermostat during installation
  • Refill and bleed the cooling system to remove air pockets

Quality Assurance and Warranty Information

Facet engine coolant thermostats, including part number 7.8929, are manufactured to meet OEM specifications for Mercedes-Benz GL350, ML350, and S350 models. This ensures reliable performance and durability. While specific warranty details may vary, Facet products typically come with a limited warranty against defects in materials and workmanship to provide confidence in your purchase.

This part fits 9 vehicles. Search below:

YearMakeModelSubmodelPositionNotes
2016Mercedes-BenzGL350Bluetec 4MaticN/AHousing and thermostat both included.
2015Mercedes-BenzGL350Bluetec 4MaticN/AHousing and thermostat both included.
2014Mercedes-BenzGL350Bluetec 4MaticN/AHousing and thermostat both included.
2014Mercedes-BenzML350Bluetec 4MaticN/AHousing and thermostat both included.
2013Mercedes-BenzGL350Bluetec 4MaticN/AHousing and thermostat both included.
2013Mercedes-BenzML350Bluetec 4MaticN/AHousing and thermostat both included.
2013Mercedes-BenzS350Bluetec 4MaticN/AHousing and thermostat both included.
2012Mercedes-BenzML350Bluetec 4MaticN/AHousing and thermostat both included.
2012Mercedes-BenzS350Bluetec 4MaticN/AHousing and thermostat both included.

* 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.