Gates
Integrated Housing Thermostat

Gates 33950 Engine Coolant Thermostat

Brand Gates 33950
0
Bolt Hole Quantity 4
Check Valve No
Electric No
Electric No
Jiggle Pin Weep Hole No
Jiggle Pin/Check Valve No
Number of Bolt Holes 4
Number of Jiggle Pins/Check Valves 0
Number of Seals 0
OE Comparison Rating OE Performance
OE Exact No
Outlet Inside Diameter 1.59
Outlet Inside Diameter 1 (in) 1.59
Outlet Outside Diameter 1.74
Outlet Outside Diameter 1 (in) 1.74
Start to Open Temperature 83
Start to Open Temperature 181
Temperature (C) 83
Type Integrated Housing Thermostat
Product line Integrated Housing Thermostat
Fits Porsche · 45 vehicles

Integrated housing thermostat. Accurate temperature control helps the engine run more efficiently.

OE performance rating. A quality aftermarket alternative to OE dealership parts.

Four-bolt design. Provides a secure, straightforward installation.

Cross-references AP Exhaust 14768, Four Seasons 86163 and Gates 33950 for the same application. See all 9.

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Gates 33950 Integrated Housing Thermostat

The Gates 33950 integrated housing thermostat is built for precise coolant temperature control in vehicles that use a thermostat and housing assembly in one unit. It is a direct-fit cooling system service part for select Porsche 911, Boxster, and Cayman applications, helping maintain stable engine operating temperature.

Key Features

  • Integrated housing thermostat for simplified cooling system service
  • Start-to-open temperature: 181°F (83°C)
  • Outlet inside diameter: 1.59 in.
  • Outlet outside diameter: 1.74 in.
  • 4 bolt holes for OE-style mounting
  • Non-electric design with no jiggle pin weep hole and no check valve
  • OE Performance rating for application-matched operation

Product Details

Gates Integrated Housing Thermostat line focuses on thermostat assemblies that regulate coolant flow accurately so the engine reaches and maintains the proper operating range. Part number 33950 is an OE-performance replacement for vehicles using an integrated thermostat housing, including Porsche 911, Porsche Boxster, and Porsche Cayman models. This part cross-references Four Seasons 86163 for the same application.

Common Problems This Part Can Address

  • Engine running too cool or too warm
  • Delayed warm-up after cold starts
  • Temperature fluctuation from a worn thermostat assembly
  • Cooling system service on an integrated housing design
  • Replacement of a thermostat housing that no longer seals or regulates properly

Installation Notes

  • Verify the outlet diameters and 4-bolt housing pattern before installation.
  • Confirm the thermostat temperature rating matches the original application.
  • Inspect the cooling system for contamination, hose wear, and housing surface condition during service.
  • Use the vehicle’s specified coolant and follow the manufacturer bleed procedure after installation.

Quality Assurance

Gates develops aftermarket thermostat solutions for integrated housing applications with attention to OE-style fit and temperature control. Part number 33950 is built to OE Performance standards for the listed Porsche applications.

Compatible Vehicles

  • Fits 1999-2008 Porsche 911, N/A, 180 Degree; OE Temperature; Integrated Housing Thermostat
  • Fits 1997-2008 Porsche Boxster, N/A, 180 Degree; OE Temperature; Integrated Housing Thermostat
  • Fits 2006-2008 Porsche Cayman, N/A, 180 Degree; OE Temperature; Integrated Housing Thermostat
This part fits 45 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2008Porsche911—3.6LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2008Porsche911—3.8LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2008PorscheBoxster—2.7LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2008PorscheBoxster—3.4LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2008PorscheCayman—2.7LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2008PorscheCayman—3.4LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2007Porsche911—3.6LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2007Porsche911—3.8LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2007PorscheBoxster—2.7LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2007PorscheBoxster—3.4LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2007PorscheCayman—2.7LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2007PorscheCayman—3.4LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2006Porsche911—3.6LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2006Porsche911—3.8LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2006PorscheBoxster—2.7LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2006PorscheBoxster—3.2LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2006PorscheCayman—3.4LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2005Porsche911Targa3.6LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2005Porsche911Carrera3.6LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2005Porsche911—3.8LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2005PorscheBoxster—2.7LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2005PorscheBoxster—3.2LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2004Porsche911—3.6LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2004Porsche911Carrera3.6LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2004Porsche911Targa3.6LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2004PorscheBoxster—2.7LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2004PorscheBoxster—3.2LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2003Porsche911—3.6LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2003Porsche911Carrera3.6LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2003Porsche911Targa3.6LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2003PorscheBoxster—2.7LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2003PorscheBoxster—3.2LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2002Porsche911—3.6LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2002PorscheBoxster—2.7LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2002PorscheBoxster—3.2LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2001Porsche911—3.4LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2001PorscheBoxster—2.7LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2001PorscheBoxster—3.2LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2000Porsche911—3.4LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2000PorscheBoxster—2.7LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
2000PorscheBoxster—3.2LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
1999Porsche911—3.4LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
1999PorscheBoxster—2.5LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
1998PorscheBoxster—2.5LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
1997PorscheBoxster—2.5LH6GASN/A180 Degree; OE Temperature; Integrated Housing Thermostat
Directly replaces or cross-references 9 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AP Exhaust — 14768Four Seasons — 86163Gates — 33950Wix — 46280455-180460-180317289961060135999610612552