Gates 33509 Engine Coolant Thermostat

Gates 33509 Economy Thermostat Overview

The Gates 33509 Economy Thermostat delivers 195-degree engine coolant temperature control for older passenger vehicles, trucks, vans, and heavy-duty applications. It is built with stainless steel and copper components for dependable coolant regulation in a wide range of Ford, Jeep, Dodge, Chevrolet, GMC, Mazda, and Mercury applications.

Gates Economy Thermostats are positioned for vintage automotive, HD truck, bus, and heavy equipment service where stable operating temperature matters. This reverse poppet thermostat is a direct-fit cooling system service part for vehicles such as the Ford Mustang, Jeep Wrangler, and Dodge Ram 1500.

Key Features

• Part number: 33509
• 195-degree start-to-open temperature for OE-style engine warm-up control
• Reverse poppet design for listed applications
• Stainless steel and copper construction
• Sealing flange outside diameter: 2.12 in.
• Height between flanges: 0.9 in.; height from flange: 0.66 in.
• Includes installation tool
• No gasket, seal, or jiggle pin/check valve included

Product Details

The Gates 33509 thermostat is engineered to regulate coolant flow at the specified 195-degree opening point, helping maintain consistent engine temperature in older cooling systems. Its economy line focuses on practical replacement value while still matching the temperature control requirements called out for many classic and light-duty platforms. If you are servicing a Ford Taurus, Jeep Cherokee, or Dodge Dakota cooling system, this thermostat provides the temperature specification and reverse poppet configuration needed for the listed fitments.

This part cross-references Motorad 300-195 and Timken 1195 for the same application.

What It Helps Address

• Engine running too cool and taking too long to reach operating temperature
• Temperature fluctuation caused by a worn thermostat
• Coolant flow control issues in older cooling systems
• Replacement needs during radiator, water pump, or hose service
• Restoration work on vintage Ford, Jeep, Dodge, and GM vehicles

Installation Notes

Verify the 195-degree specification, reverse poppet design, and flange dimensions before installation. Clean the thermostat housing and mating surfaces thoroughly, and confirm the cooling system is filled and bled according to the vehicle service procedure. This part includes an installation tool, which can assist with thermostat service on the listed applications.

Compatible fitment includes 1987-2004 Ford Mustang, 1997-2006 Jeep Wrangler, 1994-2003 Dodge Ram 1500, 1988-2001 Jeep Cherokee, and 1998-2008 Mazda B3000. Additional coverage includes Ford Taurus, Dodge Dakota, Chevrolet S10, and GMC Sonoma applications across the listed model years.

Quality Assurance

Gates supplies cooling system components for automotive, heavy-duty truck, bus, and equipment service, and this thermostat is built to meet the temperature-control requirements specified for the listed applications. Part number 33509 is cataloged as an economy thermostat for direct replacement use in compatible vehicles.