Calorstat TH6862.83J Engine Coolant Thermostat

Brand Calorstat TH6862.83J
Sealing Flange Outside Diameter 1.57
Height Between Flanges 1.65
Type Standard
Gasket Or Seal Included Yes
Seal Type Gasket
Start to Open Temperature 181.0
Seal Material Metal
9813 1.37
9841 1
9844 1
Fits Porsche · 25 vehicles

Standard thermostat. Provides reliable coolant temperature control for consistent engine operation.

Gasket included. Seal type is gasket for a secure, leak-resistant installation.

Metal seal material. Adds durable sealing performance in the cooling system.

Cross-references Gates 33950, Motorad 462-180 and 99610612552 for the same application. See all 4.

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Engine Coolant Thermostat for Porsche Applications

The Calorstat TH6862.83J engine coolant thermostat is a standard replacement thermostat for select Porsche cooling systems. It opens at 181.0 degrees to regulate coolant flow and help maintain stable operating temperature in Porsche 911, Boxster, and Cayman applications.

  • Standard engine coolant thermostat for cooling system temperature control
  • Start-to-open temperature: 181.0 degrees
  • Gasket included for sealing at installation
  • Seal type: gasket with metal seal material
  • Sealing flange outside diameter: 1.57
  • Height between flanges: 1.65
  • OE supplier context for Porsche applications

Fitment and Application Details

Compatible with 1999-2008 Porsche 911, 1997-2008 Porsche Boxster, and 2006-2008 Porsche Cayman. This Calorstat TH6862.83J thermostat is a direct-fit cooling system service part for Porsche models that require a standard-opening thermostat at 181.0 degrees. This part cross-references Gates 33950 for the same application.

What This Thermostat Helps Address

  • Engine running too cool or too warm due to thermostat wear
  • Delayed coolant circulation after cold start
  • Temperature fluctuation during normal driving
  • Cooling system service needs on Porsche 911, Boxster, or Cayman
  • Replacement of a thermostat with degraded sealing performance

Installation Notes and Tips

Verify the thermostat housing dimensions, sealing flange outside diameter, and height between flanges before installation. Replace the gasket seal during service and inspect the housing, coolant passages, and mating surfaces for corrosion or residue. Always refill and bleed the cooling system according to Porsche service procedures after installation.

Quality Assurance

Calorstat is listed as an OE supplier to Porsche, and this thermostat is built to match the specified application requirements for the 911, Boxster, and Cayman platforms. Part number TH6862.83J is also referenced by Motorad 462-180 and interchange numbers 99610612552 and 99610612553.

This part fits 25 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersNotes
2008Porsche9113.8LH6Vernet is an OE Supplier to Porsche
2008PorscheBoxster3.4LH6Vernet is an OE Supplier to Porsche
2008PorscheCayman3.4LH6Vernet is an OE Supplier to Porsche
2007Porsche9113.8LH6Vernet is an OE Supplier to Porsche
2007PorscheBoxster3.4LH6Vernet is an OE Supplier to Porsche
2007PorscheCayman3.4LH6Vernet is an OE Supplier to Porsche
2006Porsche9113.8LH6Vernet is an OE Supplier to Porsche
2006PorscheBoxster3.2LH6Vernet is an OE Supplier to Porsche
2006PorscheCayman3.4LH6Vernet is an OE Supplier to Porsche
2005Porsche9113.8LH6Vernet is an OE Supplier to Porsche
2005PorscheBoxster3.2LH6Vernet is an OE Supplier to Porsche
2004Porsche9113.6LH6Vernet is an OE Supplier to Porsche
2004PorscheBoxster3.2LH6Vernet is an OE Supplier to Porsche
2003Porsche9113.6LH6Vernet is an OE Supplier to Porsche
2003PorscheBoxster3.2LH6Vernet is an OE Supplier to Porsche
2002Porsche9113.6LH6Vernet is an OE Supplier to Porsche
2002PorscheBoxster3.2LH6Vernet is an OE Supplier to Porsche
2001Porsche9113.4LH6Vernet is an OE Supplier to Porsche
2001PorscheBoxster3.2LH6Vernet is an OE Supplier to Porsche
2000Porsche9113.4LH6Vernet is an OE Supplier to Porsche
2000PorscheBoxster3.2LH6Vernet is an OE Supplier to Porsche
1999Porsche9113.4LH6Vernet is an OE Supplier to Porsche
1999PorscheBoxster2.5LH6Vernet is an OE Supplier to Porsche
1998PorscheBoxster2.5LH6Vernet is an OE Supplier to Porsche
1997PorscheBoxster2.5LH6Vernet is an OE Supplier to Porsche
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Gates — 33950Motorad — 462-1809961061255299610612553