Gates 33940 Engine Coolant Thermostat

Overview of Gates Integrated Housing Thermostat 33940

The Gates Integrated Housing Thermostat 33940 is designed to regulate engine temperature efficiently in select Nissan and INFINITI vehicles. This engine coolant thermostat features an integrated housing for streamlined installation and reliable performance.

• Integrated housing thermostat design for simplified replacement
• Start to open temperature at 170°F (77°C) for optimal engine temperature control
• Outlet outside diameter of 1.375 inches and inside diameter of 1.205 inches
• Equipped with a jiggle pin weep hole to prevent air lock and ensure proper coolant flow
• Three bolt hole configuration for secure mounting
• Non-electric operation with one jiggle pin/check valve included
• OE performance rating, designed to meet original equipment standards

Detailed Product Description

The Gates Integrated Housing Thermostat 33940 is engineered to maintain precise engine coolant temperature by opening at 170°F (77°C). Its integrated housing design combines the thermostat and housing into a single unit, reducing installation complexity and potential leak points. The thermostat features a jiggle pin weep hole that helps release trapped air from the cooling system, improving coolant circulation and preventing overheating. With an outlet outside diameter of 1.375 inches and an inside diameter of 1.205 inches, this thermostat fits securely with a three-bolt mounting pattern. It operates mechanically without electric components, ensuring compatibility with the cooling systems of Nissan and INFINITI models such as the 350Z, FX35, G35, Pathfinder, and QX4.

Compatible Vehicles and Applications

• INFINITI 350Z, FX35, G35
• Nissan Pathfinder, QX4
• Engine coolant thermostat replacement for overheating or temperature regulation issues
• Cooling system maintenance and repair
• Thermostat housing replacement due to leaks or damage

Installation Notes and Tips

• Ensure the engine is cool before beginning installation to avoid burns
• Verify the three-bolt hole pattern matches your vehicle’s mounting points
• Inspect and replace any worn seals to prevent coolant leaks
• Properly torque bolts to manufacturer specifications to secure the housing
• Bleed the cooling system after installation to remove air pockets

Quality Assurance and Warranty

The Gates Integrated Housing Thermostat 33940 is manufactured to meet OE performance standards, ensuring reliable operation and durability. While this part is not an exact OE replacement, it is engineered to provide comparable functionality. Gates products typically come with a limited warranty against defects in materials and workmanship; please refer to the product documentation for specific warranty details.