Calorstat TH6851.76 Engine Coolant Thermostat

Engine Coolant Thermostat for Nissan Applications

Calorstat TH6851.76 is a standard engine coolant thermostat built for precise coolant flow control in select Nissan cooling systems. It opens at 169.0°F and uses a 2.51 in sealing flange outside diameter with a 1.92 in height between flanges for a direct-fit style replacement.

Compatible with 1995-1996 Nissan 300ZX, 1995 Nissan Pathfinder, and 1995 Nissan Pickup, this thermostat supports stable operating temperature control in the vehicles listed below. The TH6851.76 part number is also a useful reference when searching for a Nissan 300ZX thermostat or a thermostat for a 1995 Nissan Pathfinder.

Key Features

• Standard engine coolant thermostat design
• Start-to-open temperature: 169.0°F
• Sealing flange outside diameter: 2.51 in
• Height between flanges: 1.92 in
• Direct application coverage for select Nissan cooling systems
• Part number: TH6851.76

Detailed Description

Calorstat TH6851.76 is an engine coolant thermostat for vehicles that require a 169.0°F opening point and the listed flange dimensions. It is a practical replacement choice for maintaining coolant circulation timing in the engine cooling system, helping the engine reach and hold its intended operating temperature. This thermostat is listed for 1995-1996 Nissan 300ZX, 1995 Nissan Pathfinder, and 1995 Nissan Pickup, making it a focused option for owners searching by vehicle and part number.

This part cross-references Stant 45947 for the same application.

What It Is Used For

• Replacing a thermostat that is stuck open and causing slow warm-up
• Replacing a thermostat that is stuck closed and restricting coolant flow
• Addressing unstable engine temperature readings
• Restoring proper coolant regulation in a Nissan 300ZX, Pathfinder, or Pickup
• Supporting consistent heater performance when thermostat operation is out of spec

Installation Notes and Tips

Verify the thermostat housing dimensions and opening temperature before installation. Clean the sealing surfaces thoroughly and inspect the housing and gasket mating area for corrosion, warping, or debris. Confirm the replacement matches the vehicle application and cooling system requirements for your Nissan 300ZX, Pathfinder, or Pickup before final assembly.

Quality Assurance

Calorstat is listed as an OE supplier to Nissan, which supports confidence in application-specific fitment for the vehicles shown here. Part number TH6851.76 is cataloged with defined dimensional and temperature specifications for accurate replacement selection.