Gates 33941 Engine Coolant Thermostat - Lower

OE Type Thermostat for Nissan and INFINITI Cooling Control

Gates 33941 is an OE Type Thermostat built for precise engine temperature regulation and a leak-resistant OEM-equivalent fit. It is a direct replacement for a wide range of Nissan, INFINITI, and Suzuki applications, including Nissan Rogue, Altima, Frontier, Sentra, Pathfinder, Rogue Select, X-Trail, and INFINITI QX60 models.

The Gates OE Type Thermostat line focuses on factory-style fit and consistent coolant flow control. Part number 33941 uses an OE comparison rating of OE Performance and is built with steel, brass, and copper construction for dependable service in the cooling system.

Key Features

• OE Type Thermostat for engine coolant temperature control
• Start to open temperature: 180°F / 82°C
• Bottom by-pass design for listed applications
• O-ring seal type with seal included
• Jiggle pin weep hole for air bleeding during service
• Steel, brass, and copper construction
• OE Performance comparison rating
• Gates part number 33941

Detailed Description

Gates 33941 is engineered for drivers and technicians who need a thermostat that matches OE-style dimensions and temperature behavior. The 180-degree opening point helps maintain proper coolant circulation in the engine’s operating range, while the bottom by-pass design supports the factory cooling layout used on many Nissan and INFINITI engines. This thermostat is a practical choice for Nissan Rogue, Nissan Altima, Nissan Frontier, and INFINITI QX60 cooling system service where accurate temperature control matters.

This part cross-references Motorad 427-180 for the same application. It also aligns with multiple OE and aftermarket references listed for the same vehicle coverage, including Nissan Rogue, Altima, Frontier, Sentra, Pathfinder, Rogue Select, X-Trail, Suzuki Equator, and INFINITI QX60 applications.

Common Problems This Part Can Address

• Engine running too cool or taking too long to reach operating temperature
• Temperature fluctuation caused by a worn thermostat
• Coolant flow issues related to a sticking thermostat valve
• Leak concerns at the thermostat sealing surface
• Cooling system service on Nissan Rogue, Altima, Frontier, Sentra, Pathfinder, or INFINITI QX60 models

Installation Notes and Tips

• Verify the vehicle’s thermostat position before ordering; listed applications include N/A and Lower positions.
• Confirm the 180°F / 82°C opening specification matches the original cooling system requirement.
• Inspect the thermostat housing, sealing surface, and coolant condition during installation.
• Use the included O-ring seal and ensure the jiggle pin weep hole is oriented correctly for air bleeding.
• Bleed the cooling system after installation to remove trapped air and restore stable coolant circulation.

Quality Assurance

Gates OE Type Thermostats are built to provide precise temperature control and OEM-equivalent fit. Part number 33941 is designed to meet OE-style expectations for cooling system service and replacement on the listed Nissan, INFINITI, and Suzuki applications.