Gates 33528 Engine Coolant Thermostat

Gates 33528 Integrated Housing Thermostat

The Gates 33528 integrated housing thermostat is built for accurate engine coolant temperature control in applications that use an integrated thermostat housing. It helps maintain proper operating temperature for Saturn SC1, SC2, SL, SL1, SL2, SW1, and SW2 models across the 1991-2002 range.

Gates Integrated Housing Thermostat products focus on OE-style temperature regulation and housing-based replacement solutions for modern cooling systems. This part number, 33528, is an OE Performance replacement for vehicles that require a 185 degree thermostat with an integrated housing design.

Key Features

• Integrated housing thermostat design for direct cooling-system service
• 185 degree start-to-open temperature, 85°C
• 2 bolt holes for housing mounting
• 1 check valve / jiggle pin check valve
• 1 seal included in the design specification
• Outlet inside diameter: .979 in
• Outlet outside diameter: 1.22 in
• Non-electric thermostat construction
• OE Performance rating

Detailed Description

Gates 33528 is an engine coolant thermostat with an integrated housing layout, engineered for vehicles that use a combined thermostat and housing assembly. It regulates coolant flow at the specified 185 degree opening point to help the engine reach and maintain normal operating temperature. This matters for Saturn SC1, Saturn SC2, and Saturn SL applications where correct thermostat operation supports stable temperature control and consistent cooling-system performance. The Gates 33528 part number is also referenced in aftermarket interchange listings for related cooling-system applications.

This part cross-references Dorman - OE Solutions 902-2036 and 902-2079 for the same application.

What It Helps Address

• Engine running too cool because the thermostat opens too early
• Temperature fluctuation caused by a worn thermostat assembly
• Coolant flow control issues in integrated housing systems
• Cooling-system service needs on Saturn SC1, SC2, SL, SL1, SL2, SW1, and SW2 models
• Replacement of a thermostat assembly that no longer maintains OE temperature behavior

Installation Notes and Tips

Verify the housing style, bolt-hole count, outlet dimensions, and 185 degree temperature specification before installation. This thermostat is listed for N/A position applications and is not electric. Confirm the vehicle’s cooling-system configuration against the fitment data for Saturn SC1, Saturn SC2, Saturn SL, Saturn SL1, Saturn SL2, Saturn SW1, and Saturn SW2 before ordering or servicing.

• Fits 1993-2002 Saturn SC1, N/A
• Fits 1993-2002 Saturn SC2, N/A
• Fits 1991-2002 Saturn SL, N/A
• Fits 1991-2002 Saturn SL1, N/A
• Fits 1991-2002 Saturn SL2, N/A
• Fits 1993-2001 Saturn SW2, N/A
• Fits 1993-1999 Saturn SW1, N/A
• Fits 1991-1992 Saturn SC, N/A

Quality Assurance

Gates develops aftermarket thermostat solutions for integrated housing applications to provide an OE-style alternative for temperature regulation and cooling-system service. The 33528 is specified as an OE Performance part for Saturn cooling-system applications.