Gates 33941S Engine Coolant Thermostat - Lower

Reliable Engine Cooling with Gates Premium Thermostat 33941S

The Gates Premium Thermostat 33941S is engineered to maintain optimal engine temperature for select Nissan and INFINITI vehicles. Designed with durable stainless steel and copper materials, this engine coolant thermostat ensures consistent performance and longevity.

• Constructed from stainless steel and copper for durability
• Bottom by-pass design with a jiggle pin weep hole for efficient coolant flow
• O-ring seal type for secure sealing without gaskets
• Starts to open at 180°F (82°C) to regulate engine temperature precisely
• Compatible with multiple Nissan and INFINITI models including Altima, Frontier, Pathfinder, QX60, Rogue, Rogue Select, Sentra, and X-Trail

Detailed Features and Specifications

The Gates Premium Thermostat 33941S features a bottom by-pass design that allows coolant to circulate even when the thermostat is closed, preventing hot spots and promoting engine longevity. Its stainless steel and copper construction resists corrosion and wear, critical for maintaining reliable operation under varying temperature conditions. The thermostat includes a jiggle pin weep hole to release trapped air, improving coolant flow and system efficiency. With an O-ring seal type, it provides a tight seal without the need for additional gaskets, simplifying installation and reducing potential leak points. The thermostat opens at a precise temperature of 180°F (82°C), ensuring the engine reaches optimal operating temperature quickly and maintains it effectively.

Compatible Vehicles and Applications

This engine coolant thermostat is compatible with a range of Nissan and INFINITI vehicles, including:

• Nissan Altima
• Nissan Frontier
• Nissan Pathfinder
• INFINITI QX60
• Nissan Rogue and Rogue Select
• Nissan Sentra
• Nissan X-Trail

It is designed specifically for these models to meet OEM specifications and maintain proper engine cooling system function.

Gates Premium Thermostat Product Line

The Premium Thermostat line from Gates focuses on delivering reliable temperature regulation with high-quality materials and precise engineering. This product line emphasizes durability and performance, using corrosion-resistant metals and advanced design features like jiggle pins and O-ring seals to enhance coolant flow and sealing integrity. The 33941S model exemplifies these qualities, providing a dependable replacement part for compatible Nissan and INFINITI vehicles.

Common Issues Addressed by This Thermostat

• Engine overheating due to thermostat failure
• Poor engine warm-up times affecting fuel efficiency
• Coolant leaks caused by worn or damaged seals
• Inconsistent engine temperature regulation
• Air trapped in the cooling system reducing performance

Installation Notes and Tips

When installing the Gates Premium Thermostat 33941S, ensure the O-ring seal is properly seated to prevent leaks. The bottom by-pass design requires correct orientation in the housing for optimal coolant flow. Although no installation tool is included, standard thermostat installation tools compatible with Nissan and INFINITI models can be used. Verify the thermostat opens at the specified temperature to confirm proper operation after installation.

Quality Assurance and Warranty

Gates manufactures the Premium Thermostat 33941S to meet stringent quality standards, using corrosion-resistant materials and precision engineering. While specific warranty details are not provided, Gates products typically come with manufacturer-backed quality assurance to support reliable performance in automotive cooling systems.