Gates 33189 Engine Coolant Thermostat

OE Type Thermostat for Precise Cooling Control

The Gates 33189 OE Type Thermostat is built for accurate engine temperature regulation and a leak-free OEM-equivalent fit. It is a direct replacement style thermostat for a wide range of vehicles, including Saab 9-5, Saab 9-3, Ford Mustang, and Lincoln Town Car applications that call for a 195 degree thermostat.

Key Features

• OE Type Thermostat construction for factory-style temperature control
• Start-to-open temperature: 195°F / 91°C
• Bottom by-pass design for listed applications
• Stainless steel and copper construction
• OE Performance comparison rating
• Silver finish with OEM-equivalent fitment profile
• Gates part number 33189 for easy identification

Product Details

Gates OE Type Thermostats are engineered to deliver precise coolant flow control and a dependable seal at the housing interface. The 33189 thermostat uses stainless steel and copper materials, with a bottom by-pass design and OE-style dimensions to match the original cooling system layout. This makes it a practical choice for drivers servicing cooling systems on vehicles such as the Ford Mustang, Mercury Grand Marquis, and Saab 9000 where correct operating temperature is critical for stable engine performance.

This part cross-references Four Seasons 33189 and Motorad 227-195 for the same application.

Common Cooling System Issues It Can Address

• Engine running too cool or too warm due to thermostat wear
• Slow warm-up after cold starts
• Temperature fluctuation during normal driving
• Cooling system service on OE-temperature applications
• Replacement of a thermostat with incorrect opening temperature

Installation Notes and Fitment Tips

Verify the housing style, by-pass configuration, and opening temperature before installation. This thermostat is listed for 195 degree OE-temperature applications and includes fitment across multiple makes and models, including Fits 1999-2008 Saab 9-5, N/A; Fits 1999-2004 Saab 9-3, N/A; Fits 1991-2003 Lincoln Town Car, N/A; Fits 1996-2002 Ford Mustang, N/A; and Fits 1992-2001 Mercury Grand Marquis, N/A. Additional coverage includes Fits 2003 Volvo C70, N/A, Fits 1979-1998 Saab 900, N/A, and Fits 1986-1998 Saab 9000, N/A.

Confirm that the sealing flange dimensions and by-pass layout match the original thermostat before assembly. Clean the housing mating surfaces thoroughly and inspect the coolant system for contamination or gasket residue before reassembly.

Quality Assurance

Gates OE Type Thermostats are built to provide OEM-equivalent fit and consistent temperature control for cooling system service. The 33189 is engineered for leak-free operation and OE-style replacement performance in the listed applications.