Gates 33557 Engine Coolant Thermostat

Reliable Engine Coolant Thermostat for Acura, Honda, Isuzu, and Toyota

The Gates OE Type Thermostat 33557 is engineered to maintain optimal engine temperature for vehicles like the Honda RAV4, Toyota Sienna, and Acura SLX. Designed with durable stainless steel and copper materials, this thermostat ensures consistent performance and longevity in your cooling system.

• Constructed from stainless steel and copper for durability
• Reverse poppet design for precise temperature regulation
• Start to open temperature at 170°F (77°C) for accurate engine warm-up
• Includes a jiggle pin weep hole to prevent air lock
• Sealing flange outside diameter approximately 2.51 inches
• Height between flanges around 1.12 inches for proper fitment
• OE Type Thermostat line ensures original equipment performance

Detailed Features and Specifications

This Gates OE Type Thermostat (part number 33557) features a reverse poppet design that allows for efficient coolant flow and temperature control. The thermostat’s stainless steel and copper construction provides corrosion resistance and durability under high-temperature conditions. It has a sealing flange outside diameter of about 2.51 inches and a height between flanges near 1.12 inches, ensuring a precise fit in the cooling system housing. The jiggle pin weep hole helps release trapped air, reducing the risk of overheating. This thermostat starts to open at 170°F (77°C), which aligns with OEM specifications for smooth engine warm-up and optimal performance.

OE Type Thermostat Product Line Overview

The Gates OE Type Thermostat product line is designed to meet or exceed original equipment specifications, providing reliable temperature regulation and compatibility with a range of vehicle makes and models. This line focuses on delivering thermostats that match OEM dimensions and performance characteristics, ensuring proper fit and function without the need for additional gaskets or seals. The 33557 model exemplifies this approach by offering precise engineering and materials that support long-term engine cooling system health.

Compatible Vehicles and Common Applications

• Acura SLX
• Honda Matrix and RAV4
• Isuzu Rodeo and Trooper
• Toyota Passport and Sienna

This thermostat is suitable for use in these models to address issues such as engine overheating, poor heater performance, and inconsistent engine temperature regulation.

Common Issues Addressed by This Thermostat

• Engine overheating due to stuck thermostat
• Delayed engine warm-up affecting fuel efficiency
• Coolant flow restriction causing temperature fluctuations
• Air pockets in the cooling system leading to hot spots
• Failure to maintain proper operating temperature

Installation Notes and Tips

Installation of the Gates OE Type Thermostat 33557 requires no additional gaskets, as it is designed for a direct fit. Ensure the sealing flange surfaces are clean and free of debris before installation. The thermostat should be installed with the jiggle pin oriented correctly to allow air to escape from the cooling system. No installation tool is included, so standard hand tools and care are necessary to avoid damage during replacement.

Quality Assurance and Warranty

Gates OE Type Thermostats are manufactured to meet original equipment standards, providing reliable performance and durability. While specific warranty details are not provided, Gates products typically undergo rigorous quality control to ensure consistent operation in demanding automotive environments.