Gates
Integrated Housing Thermostat

Gates 34851 Engine Coolant Thermostat

Brand Gates 34851
Outlet Outside Diameter .6
Outlet Outside Diameter 1.327
Bolt Hole Quantity 3
Type Integrated housing thermostat
Jiggle Pin Weep Hole Yes
Start to Open Temperature 180
Start to Open Temperature 82
Outlet Inside Diameter .41
Outlet Inside Diameter 1.08
Electric No
9841 1
Check Valve No
Electric No
Jiggle Pin/Check Valve Yes
Number of Bolt Holes 3
Number of Jiggle Pins/Check Valves 1
Number of Seals 1
OE Comparison Rating Oe performance
OE Exact No
Outlet Inside Diameter 1 (in) 1.08
Outlet Inside Diameter 2 (in) .41
Outlet Outside Diameter 1 (in) 1.327
Outlet Outside Diameter 2 (in) .6
Temperature (C) 82
Product line Integrated Housing Thermostat
Fits Honda · 13 vehicles

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

OE performance. Built as a quality aftermarket alternative to OE dealership parts.

Jiggle pin weep hole. Helps vent trapped air for more consistent temperature control.

Cross-references Davico Mfg 49718, Dorman - OE Solutions 902-5835 and Focus Auto Parts 86185 for the same application. See all 5.

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Free returns within 60 days if it doesn't fit when fitment is verified.

Integrated thermostat housing for Honda cooling systems

Gates 34851 is an integrated housing thermostat built for precise engine temperature control in select Honda applications. It is an OE-performance replacement for vehicles that use a thermostat and housing assembly in one unit, helping maintain stable coolant flow and operating temperature.

Compatible with 2013-2015 Honda Crosstour, 2016-2017 Honda Accord, 2016-2020 Honda Pilot, and 2017-2019 Honda Ridgeline, this Gates Integrated Housing Thermostat is built around the factory-style 180 degree opening temperature and includes a seal for the application.

Key features

  • Integrated housing thermostat design for simplified OE-style replacement
  • Start-to-open temperature: 180°F / 82°C
  • OE Performance rating for factory-style temperature control
  • Jiggle pin weep hole and jiggle pin/check valve included in the design
  • 3 bolt holes for the specified housing pattern
  • Non-electric thermostat construction
  • Outlet dimensions: 1.327 in and 0.6 in outside diameter; 1.08 in and 0.41 in inside diameter
  • Seal included for the listed applications

Product details

Gates Integrated Housing Thermostat 34851 is engineered for vehicles that use an integrated thermostat housing rather than a separate thermostat-only service part. Gates develops aftermarket thermostat solutions for these newer cooling-system designs, giving technicians and owners an OE-style replacement option for temperature regulation and coolant management. This part cross-references Dorman - OE Solutions 902-5835 for the same application.

What it helps address

  • Engine running too cool or too hot due to thermostat control issues
  • Delayed warm-up or unstable operating temperature
  • Coolant flow problems related to a worn integrated housing assembly
  • Temperature regulation concerns on Honda Pilot, Honda Ridgeline, Honda Accord, and Honda Crosstour applications
  • Leak points at the thermostat housing seal area

Installation notes and tips

  • Verify the vehicle uses the integrated housing style before ordering.
  • Confirm the 180°F / 82°C temperature specification matches the OE requirement.
  • Inspect mating surfaces, coolant condition, and hose connections during service.
  • Follow the manufacturer service procedure for coolant refill and air bleeding after installation.
  • Use the listed fitment only: 2013-2015 Honda Crosstour, 2016-2017 Honda Accord, 2016-2020 Honda Pilot, and 2017-2019 Honda Ridgeline.

Quality assurance

Gates backs this thermostat housing with OE-performance engineering and application-focused development for integrated cooling-system designs. Part number 34851 is built as an aftermarket alternative to OE dealership replacement for the listed Honda vehicles.

This part fits 13 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelTransmissionLitersCylindersFuel TypePositionNotes
2020HondaPilotAutomatic3.5LV6GASN/A180 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2019HondaPilotAutomatic3.5LV6GASN/A180 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2019HondaRidgeline3.5LV6GASN/A180 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2018HondaPilotAutomatic3.5LV6GASN/A180 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2018HondaRidgeline3.5LV6GASN/A180 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2017HondaAccordAutomatic3.5LV6GASN/A180 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2017HondaPilotAutomatic3.5LV6GASN/A180 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2017HondaRidgeline3.5LV6GASN/A180 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2016HondaAccordAutomatic3.5LV6GASN/A180 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2016HondaPilotAutomatic3.5LV6GASN/A180 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2015HondaCrosstour3.5LV6GASN/A180 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2014HondaCrosstour3.5LV6GASN/A180 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2013HondaCrosstour3.5LV6GASN/A180 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
Directly replaces or cross-references 5 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Davico Mfg — 49718Dorman - OE Solutions — 902-5835Focus Auto Parts — 86185Motorad — 751-180193155G0A01