Gates 33747S Engine Coolant Thermostat

Reliable Engine Cooling with Gates Premium Thermostat 33747S

The Gates Premium Thermostat 33747S is engineered to maintain optimal engine temperature for select Nissan and INFINITI vehicles. Designed with durable stainless steel and copper materials, this thermostat ensures consistent performance and longevity in your vehicle's cooling system.

• Constructed from stainless steel and copper for durability
• Bottom by-pass design with a jiggle pin weep hole for efficient coolant flow
• Sealing flange outside diameter of 2.13 inches for precise fitment
• Starts to open at 170°F (77°C) to regulate engine temperature effectively
• Height between flanges: 1.36 inches; overall height: 2.2 inches
• Includes one jiggle pin/check valve and no gaskets or seals
• Compatible with multiple Nissan and INFINITI models including 240SX, Altima, and Xterra

About the Gates Premium Thermostat Product Line

The Gates Premium Thermostat line focuses on delivering reliable engine temperature control through high-quality materials and precise engineering. This product line is designed to meet or exceed OEM specifications, providing consistent thermal management for vehicles like the Nissan 200SX and INFINITI G20. The 33747S model exemplifies this commitment with its stainless steel and copper construction and bottom by-pass design, ensuring efficient coolant circulation and engine protection.

Detailed Product Description

The Gates 33747S engine coolant thermostat features a bottom by-pass design that allows coolant to circulate even when the thermostat is closed, preventing hot spots and promoting uniform engine temperature. The thermostat begins to open at 170°F (77°C), which is critical for maintaining optimal engine operating temperature. Its stainless steel and copper construction offers corrosion resistance and durability under high-temperature conditions. The sealing flange outside diameter measures 2.13 inches, ensuring a secure fit within the cooling system housing. Additionally, the included jiggle pin weep hole helps release trapped air, improving coolant flow and system efficiency.

Compatible Vehicles and Common Applications

• Compatible with Nissan models: 200SX, 240SX, Altima, D21, Frontier, G20, Pickup, Sentra, Xterra
• Compatible with INFINITI NX and G20 models
• Ideal for replacing faulty or worn thermostats causing engine overheating or poor temperature regulation
• Addresses issues such as engine overheating, poor heater performance, and inconsistent temperature gauge readings
• Helps prevent coolant leaks and engine damage due to thermostat failure

Installation Notes and Tips

This thermostat does not include an installation tool, so ensure you have the appropriate tools for removal and installation. Verify the sealing flange diameter and height measurements to confirm compatibility with your vehicle’s cooling system. Proper installation is critical to avoid leaks and ensure accurate temperature regulation. Inspect the housing and coolant passages for debris before installation to maintain optimal flow.

Quality Assurance and Warranty

The Gates Premium Thermostat 33747S is manufactured to meet stringent quality standards, using corrosion-resistant materials for long service life. While specific warranty details are not provided, Gates products typically adhere to industry standards for durability and performance. Always consult product documentation or the manufacturer for warranty information related to your purchase.