Gates 33958 Engine Coolant Thermostat

Overview of Gates Integrated Housing Thermostat 33958

The Gates Integrated Housing Thermostat 33958 is designed for reliable engine temperature regulation in select Ford vehicles. This engine coolant thermostat combines the thermostat and housing into a single unit, ensuring efficient coolant flow and temperature control for models like the Ford E-350 Club Wagon and F-350 Super Duty.

• Integrated housing thermostat design for streamlined installation
• Start to open temperature at 192°F (89°C) for precise engine temperature management
• Outlet outside diameter of 1.751 inches and inside diameter of 1.476 inches
• Equipped with a jiggle pin weep hole to prevent air lock and ensure proper coolant circulation
• Two bolt holes for secure mounting
• Non-electric operation with one seal included
• OE performance rating, designed to meet original equipment standards

Details on the Integrated Housing Thermostat Product Line

The Gates Integrated Housing Thermostat line features thermostats combined with their housings to simplify replacement and reduce potential leak points. This design integrates the thermostat directly into the housing, which helps maintain consistent engine temperatures and improves coolant system reliability. The 33958 part is a part of this line, offering a precise start to open temperature and a jiggle pin weep hole to enhance coolant flow and prevent air pockets.

Product Description and Specifications

This engine coolant thermostat is engineered for Ford vehicles including the E-350 Club Wagon, E-350 Super Duty, Excursion, F-250 Super Duty, and F-350 Super Duty. The thermostat opens at 192°F (89°C), which is critical for maintaining optimal engine operating temperature. The outlet dimensions—1.751 inches outside diameter and 1.476 inches inside diameter—ensure compatibility with the vehicle’s cooling system. Featuring two bolt holes, the thermostat housing mounts securely, and the included jiggle pin weep hole helps release trapped air, preventing overheating and coolant flow interruptions. This part is non-electric and includes one seal for installation.

Common Applications and Issues Addressed

• Regulates engine temperature to prevent overheating
• Prevents coolant leaks by integrating thermostat and housing
• Eliminates air pockets in the cooling system with jiggle pin weep hole
• Replaces faulty or stuck thermostats causing poor engine performance
• Restores proper coolant flow in Ford E-350 and F-Series Super Duty trucks

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 included seal to prevent coolant leaks
• Verify outlet diameters match the vehicle’s cooling system hoses
• Check for proper thermostat operation after installation by monitoring engine temperature

Quality Assurance and Warranty

The Gates Integrated Housing Thermostat 33958 meets OE performance standards, ensuring reliable operation in compatible Ford vehicles. While this part is not an exact OE replacement, it is engineered to provide comparable durability and function. 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.