Gates 33788S Engine Coolant Thermostat

Overview of Gates Premium Thermostat 33788S

The Gates Premium Thermostat 33788S is engineered for reliable engine temperature regulation in select Buick, Cadillac, Chevrolet, and Pontiac vehicles. Designed with durable stainless steel and copper materials, this engine coolant thermostat ensures consistent performance in models like the Camaro, Corvette, and Impala.

• Constructed from stainless steel and copper for durability
• Bottom by-pass design with jiggle pin weep hole for efficient coolant flow
• O-ring seal type for secure sealing without gaskets
• Starts to open at 180°F (82°C) for precise temperature control
• Compatible with multiple GM vehicles including Camaro, Caprice, and Firebird

Detailed Product Features and Specifications

The Gates Premium Thermostat 33788S features a bottom by-pass design that allows coolant to circulate even when the thermostat is closed, helping to prevent engine overheating. It includes a single jiggle pin weep hole to release trapped air and maintain system pressure. The thermostat’s sealing flange outside diameter measures 2.12 inches, with a height between flanges of 1.48 inches and an overall height of 2.2 inches. The O-ring seal type eliminates the need for additional gaskets, simplifying installation and reducing potential leak points. This thermostat is designed to start opening at 180°F (82°C), ensuring optimal engine operating temperature for efficient performance.

About the Gates Premium Thermostat Product Line

The Premium Thermostat line by Gates focuses on delivering reliable temperature regulation components made from high-quality materials such as stainless steel and copper. This product line emphasizes precise temperature control and durability, making it suitable for demanding automotive cooling systems. The 33788S model exemplifies these qualities with its robust construction and design features tailored for GM vehicles.

Compatible Vehicles and Common Applications

• Buick models including Roadmaster and Fleetwood
• Cadillac models such as Fleetwood and Commercial Chassis
• Chevrolet vehicles including Camaro, Caprice, and Impala
• Pontiac models like Firebird and Trans Am

Common Issues Addressed by This Thermostat

• Engine overheating due to thermostat failure
• Inconsistent engine temperature regulation
• Coolant flow restriction causing poor heater performance
• Air trapped in cooling system leading to hot spots
• Leaks caused by worn or damaged seals

Installation Notes and Tips

The Gates 33788S thermostat does not include an installation tool, so ensure you have the appropriate tools for removal and installation. The O-ring seal type requires careful placement to avoid leaks. Verify the bottom by-pass design orientation during installation to maintain proper coolant flow. It is recommended to inspect the housing and clean mating surfaces before installing the new thermostat to ensure a proper seal.

Quality Assurance and Warranty

Gates Premium Thermostats are manufactured to meet or exceed OEM specifications, using corrosion-resistant stainless steel and copper materials. While specific warranty details for part number 33788S are not provided here, Gates typically offers limited warranties covering defects in materials and workmanship. Refer to official Gates documentation for exact warranty terms.