Gates 33747 Engine Coolant Thermostat

OE Type Thermostat for Nissan and Infiniti

The Gates OE Type Thermostat 33747 is built for precise engine coolant temperature control and an OEM-equivalent fit. It is a direct replacement choice for a range of Nissan and INFINITI applications, including Nissan Frontier, Xterra, Sentra, 240SX, and Altima models that call for a 170-degree thermostat.

Key Features

• OE Type Thermostat engineered for factory-style temperature regulation
• 170-degree start-to-open temperature for listed applications
• Steel and copper construction for durable cooling system service
• Bottom by-pass design for the specified vehicle applications
• Jiggle pin weep hole included for air bleeding during service
• OE Performance comparison rating
• Gates part number 33747 for easy identification

Product Details

Gates OE Type Thermostats are designed to deliver accurate coolant flow control and a leak-free fit that matches OEM expectations. Part number 33747 uses a bottom by-pass design, measures 2.19 inches in height, and features a 2.13-inch sealing flange outside diameter with a 1.09-inch by-pass flange diameter. The steel and copper construction supports dependable operation in the cooling system, while the jiggle pin weep hole helps purge trapped air during installation and service. This thermostat is listed for Nissan and INFINITI vehicles that require a 170-degree OE temperature setting, including applications across the Nissan Frontier, Nissan Pickup, Nissan Xterra, Nissan Altima, Nissan Sentra, Nissan 200SX, Nissan 240SX, Nissan D21, Nissan NX, and INFINITI G20. This part cross-references Monroe Shocks & Struts (e.g., 32337) for the same application.

What It Helps Address

• Engine running too cool or too hot due to thermostat wear
• Slow warm-up after cold starts
• Temperature fluctuation from restricted coolant flow control
• Cooling system service on Nissan Frontier, Xterra, Sentra, Altima, and related models
• Replacement of an OE-style thermostat with the correct 170-degree opening point

Installation Notes and Tips

Verify the engine’s thermostat specification before installation, since fitment is tied to the listed 170-degree OE temperature applications. Some Nissan Pickup, Altima, Frontier, Sentra, 200SX, 240SX, D21, and NX applications note that a gasket is not required and silicone should be used; follow the vehicle service procedure for the exact engine. Confirm the by-pass design and flange dimensions match the original part before assembly.

Quality Assurance

Gates OE Type Thermostats are engineered for precise temperature control and OEM-equivalent fit. Part number 33747 is built to OE Performance expectations for the listed applications and is intended to restore factory-style cooling system operation.