Gates 33528 Engine Coolant Thermostat

Overview of Gates Integrated Housing Thermostat 33528

The Gates Integrated Housing Thermostat 33528 is designed specifically for Saturn vehicles, including SC, SC1, SC2, SL, SL1, SL2, SW1, and SW2 models. This engine coolant thermostat ensures precise temperature regulation to maintain optimal engine performance and prevent overheating.

• Integrated housing thermostat design for streamlined installation
• Start to open temperature at 185°F (85°C) for accurate coolant flow control
• Outlet outside diameter of 1.22 inches and inside diameter of 0.979 inches
• Equipped with one check valve and one seal for reliable operation
• Two bolt holes for secure mounting
• Non-electric thermostat with jiggle pin and weep hole omitted
• OE performance rating ensuring compatibility and durability

Detailed Product Description

The Gates 33528 thermostat features an integrated housing design that combines the thermostat and housing into a single unit, simplifying replacement and reducing potential leak points. It opens at a precise temperature of 185°F (85°C), allowing coolant to flow only when the engine reaches optimal operating temperature. The thermostat includes a check valve and a jiggle pin to facilitate air bleeding and prevent airlocks, although it does not have a weep hole. The outlet dimensions—1.22 inches outside diameter and 0.979 inches inside diameter—are engineered to match the cooling system specifications of Saturn SC, SL, and SW series vehicles. With two bolt holes, installation is straightforward and secure.

Compatible Vehicles and Applications

This thermostat is compatible with the following Saturn models:

• Saturn SC, SC1, SC2
• Saturn SL, SL1, SL2
• Saturn SW1, SW2

It is designed to maintain proper engine temperature, helping to prevent issues such as overheating, poor heater performance, and inefficient fuel consumption.

Common Issues Addressed by This Thermostat

• Engine overheating due to stuck closed thermostat
• Coolant leaks from faulty housing seals
• Erratic engine temperature readings
• Poor cabin heating performance
• Reduced fuel efficiency caused by improper engine temperature regulation

Installation Notes and Tips

• Ensure the engine is cool before beginning installation to avoid burns
• Use the two bolt holes to securely fasten the thermostat housing
• Replace the seal included with the thermostat to prevent leaks
• Verify the thermostat orientation matches OEM specifications
• Bleed the cooling system after installation to remove trapped air

Quality Assurance and Warranty

The Gates Integrated Housing Thermostat 33528 meets OE performance standards, ensuring reliable operation and durability. While it is not an exact OE part, it is engineered to provide comparable quality and fitment. Gates products typically come with a limited warranty against defects in materials and workmanship; please refer to the manufacturer’s warranty details for specific coverage information.