Gates 34212 Engine Coolant Thermostat

Gates OE Type Thermostat for Ram 2500 and 3500

The Gates OE Type Thermostat 34212 is built for precise engine coolant temperature control and an OEM-equivalent fit. It uses a reverse poppet design with an O-ring seal to support leak-free operation in cooling systems that require a 200 degree thermostat.

Compatible with 2010 Dodge Ram 2500 and Ram 3500, plus 2011-2012 Ram 2500 and Ram 3500 applications, this thermostat is a direct-fit cooling system service part for the listed vehicles.

Key Features

• OE Type Thermostat engineered for factory-style temperature regulation
• Start-to-open temperature: 200 degrees
• Reverse poppet design for the listed cooling system applications
• Stainless steel and copper construction
• O-ring seal for a secure sealing surface
• Jiggle pin weep hole included for air bleeding during service
• OE Performance comparison rating
• Part number 34212 for easy identification

Product Details

Gates OE Type Thermostats are built to match the temperature control and fit requirements of the original cooling system layout. The 34212 thermostat is specified with a 200 degree start-to-open temperature, reverse poppet design, and seal material suited for dependable coolant control. Its OE-style construction supports consistent engine warm-up and stable operating temperature in Ram 2500 and Ram 3500 trucks listed in the fitment data. If you are replacing a thermostat on a 2010 Dodge Ram 2500 or 2011-2012 Ram 3500, this Gates 34212 thermostat provides the correct service-style replacement for those applications.

This part cross-references Continental 49212 and Four Seasons 39212 for the same application.

What It Helps Address

• Engine running too cool or too hot due to thermostat wear
• Delayed warm-up after cold starts
• Temperature fluctuation from a sticking thermostat
• Coolant seepage at the thermostat sealing surface
• Service replacement for a failed OE-style thermostat

Installation Notes and Tips

Verify the 200 degree temperature specification before installation and confirm the housing and sealing surfaces are clean and free of corrosion. The thermostat uses an O-ring seal and does not include an installation tool. Follow the vehicle service procedure for coolant refill and air bleeding, and inspect the cooling system for related wear before returning the vehicle to service.

Quality Assurance

Gates OE Type Thermostats are engineered for precise temperature control and OEM-equivalent fit. The 34212 is built to meet OE-style expectations for the listed Ram applications and cooling system service requirements.