Gates 34850 Engine Coolant Thermostat
OE Quality 60-Day Returns
Gates
 Integrated Housing Thermostat

Gates 34850 Engine Coolant Thermostat

Brand Gates 34850
Outlet Outside Diameter 1.01
Outlet Outside Diameter 1.74
Outlet Outside Diameter 2.02
Bolt Hole Quantity 3
Type Integrated housing thermostat
Jiggle Pin Weep Hole No
Start to Open Temperature 105
Start to Open Temperature 221
Outlet Inside Diameter .81
Outlet Inside Diameter 1.42
Outlet Inside Diameter 1.85
Electric Yes
9841 1
Check Valve No
Electric Yes
Jiggle Pin/Check Valve No
Number of Bolt Holes 3
Number of Jiggle Pins/Check Valves 0
Number of Seals 1
OE Comparison Rating Oe performance
OE Exact No
Outlet Inside Diameter 1 (in) 1.85
Outlet Inside Diameter 2 (in) 1.42
Outlet Inside Diameter 3 (in) .81
Outlet Outside Diameter 1 (in) 2.02
Outlet Outside Diameter 2 (in) 1.74
Outlet Outside Diameter 3 (in) 1.01
Temperature (C) 105
Product line Integrated Housing Thermostat
Fits Mercedes-Benz · 47 vehicles

Integrated housing thermostat. Combines the thermostat and housing in one OE-performance design.

OE performance rating. Built as a quality alternative to dealership replacement parts.

105Β°C opening temperature. Helps regulate coolant flow for efficient engine operation.

Cross-references Dorman - HELP 15852, Dorman - OE Solutions 902-5844 and Motorad 785-217 for the same application. See all 6.

$234.03Free shipping
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Integrated thermostat housing for Mercedes-Benz cooling control

The Gates 34850 Integrated Housing Thermostat is an electric engine coolant thermostat built for precise temperature regulation in select Mercedes-Benz applications. It is an OE-performance replacement for vehicles that use an integrated thermostat housing design, helping maintain stable coolant flow and operating temperature.

Compatible With 2012-2018 Mercedes-Benz E-Class, C-Class, GLK-Class, ML-Class, SLK-Class, R-Class, GLE350, and E300 applications listed below.

Key features

  • Integrated Housing Thermostat design for applications that use a combined thermostat and housing assembly
  • Electric thermostat configuration
  • Start-to-open temperature: 221 degrees F / 105 degrees C
  • 3 bolt holes for mounting
  • 1 seal position noted in the product data
  • OE Performance comparison rating
  • Gates part number 34850 for direct catalog lookup

Product details

Gates Integrated Housing Thermostat 34850 is engineered for accurate coolant temperature control in modern Mercedes-Benz cooling systems. Gates focuses on aftermarket thermostat solutions for vehicles that use integrated housing designs, providing an OE-style alternative for service replacement. This part number 34850 is listed for multiple Mercedes-Benz models, including the E350, C350, GLK350, ML350, SLK350, C300, R350, E300, and GLE350, making it a relevant search match for drivers and technicians servicing these applications.

This part cross-references Dorman - OE Solutions 902-5844 for the same application.

Common issues this part can address

  • Engine running too cool or too hot due to thermostat control problems
  • Temperature fluctuation during warm-up or normal driving
  • Coolant flow irregularities in integrated housing thermostat systems
  • Check engine light concerns related to thermostat performance
  • Cooling system service needs on Mercedes-Benz E350, C350, and ML350 applications

Installation notes and fitment

Use this thermostat only on the exact Mercedes-Benz applications listed in the fitment data. Confirm the housing style, electrical connection, outlet dimensions, and OE temperature specification before installation. The catalog data lists 221 degree OE temperature coverage, and several applications note a seal included; verify the vehicle-specific service requirements during repair. Fits 2016-2018 Mercedes-Benz GLE350, N/A. Fits 2016 Mercedes-Benz E300, N/A. Fits 2013-2014 Mercedes-Benz E300, N/A. Fits 2012-2016 Mercedes-Benz E350, N/A. Fits 2012-2016 Mercedes-Benz SLK350, N/A. Fits 2012-2015 Mercedes-Benz C350, N/A. Fits 2013-2015 Mercedes-Benz GLK350, N/A. Fits 2012-2015 Mercedes-Benz ML350, N/A. Fits 2013-2014 Mercedes-Benz C300, N/A. Fits 2012 Mercedes-Benz R350, N/A.

Quality assurance

Gates backs this integrated thermostat housing with OE-performance positioning and application-specific engineering for Mercedes-Benz cooling system service. The brand’s aftermarket thermostat development is focused on providing a reliable alternative to dealership replacement parts.

Related reading

This part fits 47 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypePositionNotes
2018Mercedes-BenzGLE3503.5LV6FLEXN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2018Mercedes-BenzGLE3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2017Mercedes-BenzGLE3503.5LV6FLEXN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2017Mercedes-BenzGLE3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2016Mercedes-BenzE3003.5LV6GASN/A221 Degree; OE Temperature; Integrated Housing Thermostat
2016Mercedes-BenzE3503.5LV6FLEXN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2016Mercedes-BenzE3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2016Mercedes-BenzGLE3503.5LV6FLEXN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2016Mercedes-BenzGLE3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2016Mercedes-BenzSLK3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2015Mercedes-BenzC3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2015Mercedes-BenzE3503.5LV6FLEXN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2015Mercedes-BenzE3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2015Mercedes-BenzGLK3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2015Mercedes-BenzML3503.5LV6FLEXN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2015Mercedes-BenzML3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2015Mercedes-BenzSLK3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2014Mercedes-BenzC3003.5LV6FLEXN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2014Mercedes-BenzC3003.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2014Mercedes-BenzC3503.5LV6FLEXN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2014Mercedes-BenzC3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2014Mercedes-BenzE3003.5LV6GASN/A221 Degree; OE Temperature; Integrated Housing Thermostat
2014Mercedes-BenzE3503.5LV6FLEXN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2014Mercedes-BenzE3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2014Mercedes-BenzGLK3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2014Mercedes-BenzML3503.5LV6FLEXN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2014Mercedes-BenzML3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2014Mercedes-BenzSLK3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2013Mercedes-BenzC3003.5LV6FLEXN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2013Mercedes-BenzC3003.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2013Mercedes-BenzC3503.5LV6FLEXN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2013Mercedes-BenzC3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2013Mercedes-BenzE3003.5LV6GASN/A221 Degree; OE Temperature; Integrated Housing Thermostat
2013Mercedes-BenzE3503.5LV6FLEXN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2013Mercedes-BenzE3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2013Mercedes-BenzGLK3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2013Mercedes-BenzML3503.5LV6FLEXN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2013Mercedes-BenzML3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2013Mercedes-BenzSLK3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2012Mercedes-BenzC3503.5LV6FLEXN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2012Mercedes-BenzC3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2012Mercedes-BenzE3503.5LV6FLEXN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2012Mercedes-BenzE3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2012Mercedes-BenzML3503.5LV6FLEXN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2012Mercedes-BenzML3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2012Mercedes-BenzR3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2012Mercedes-BenzSLK3503.5LV6GASN/A221 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Dorman - HELP — 15852Dorman - OE Solutions — 902-5844Motorad — 785-217URO — 276200051590231012762000115