Professional Parts Sweden 26431664 Engine Coolant Thermostat

Engine Coolant Thermostat for Volvo Cooling Systems

Professional Parts Sweden 26431664 is an engine coolant thermostat with a 90-degree opening temperature for Volvo cooling system service. It is a direct-fit replacement for a wide range of Volvo models, including S60, XC70, S80, C70, S40, V40, V70, S70, S90, V90, 850, and 960.

Key Features

• Engine coolant thermostat with 90°C opening temperature
• OE-style replacement for temperature regulation in the cooling circuit
• Fits multiple Volvo passenger car applications from 1992-2009
• Part number 26431664 for easy identification and ordering
• Cross-references select aftermarket and OE numbers for the same application

Detailed Description

This thermostat helps regulate coolant flow so the engine can reach and maintain proper operating temperature. Professional Parts Sweden 26431664 is used in Volvo cooling systems where stable temperature control is needed for everyday driving, warm-up performance, and consistent heater output. It is a practical replacement for Volvo S60, XC70, S80, C70, S40, V40, V70, S70, S90, V90, 850, and 960 applications. This part cross-references QTH616K and V95-99-0006 for the same application.

What This Part Helps Address

• Engine running too cool or taking too long to warm up
• Temperature fluctuations during normal driving
• Weak cabin heat caused by poor coolant regulation
• Cooling system service needs on aging Volvo models
• Replacement of a worn or sticking thermostat assembly

Installation Notes and Tips

• Verify the opening temperature is 90°C before installation.
• Confirm vehicle fitment by year and model, especially on Volvo S90, V90, and 960 applications with gasket notes.
• Inspect the thermostat housing and sealing surfaces during service.
• Use the part number 26431664 to match the correct cooling system application.

Quality Assurance

Professional Parts Sweden supplies application-specific replacement parts for European vehicles. This thermostat is cataloged for confirmed Volvo fitments and is identified by part number 26431664.

Compatible With Volvo Models

• Fits 2001-2009 Volvo S60, N/A
• Fits 2003-2007 Volvo XC70, N/A
• Fits 1999-2006 Volvo S80, N/A
• Fits 1998-2005 Volvo C70, N/A
• Fits 1999-2004 Volvo S40, N/A
• Fits 1999-2004 Volvo V40, N/A
• Fits 1998-2002 Volvo V70, N/A
• Fits 1998-2000 Volvo S70, N/A
• Fits 1998 Volvo S90, N/A
• Fits 1997-1998 Volvo S90, N/A, Incl.Gasket
• Fits 1998 Volvo V90, N/A
• Fits 1997-1998 Volvo V90, N/A, Incl.Gasket
• Fits 1993-1997 Volvo 850, N/A
• Fits 1992-1997 Volvo 960, N/A, Incl.Gasket