Gates 33579 Engine Coolant Thermostat

Gates 33579 Heavy-Duty Thermostat Overview

The Gates 33579 heavy-duty engine coolant thermostat is built for demanding cooling systems that see constant vibration and heat cycling. It uses a Weir-Stat design with stainless steel, steel, and copper construction for dependable temperature control in heavy-duty truck, bus, tractor, and equipment applications.

Compatible With select Dodge Viper, BMW M5, BMW M6, Dodge Ram 1500, Ford GT, Dodge Ram 2500, and Dodge Ram 3500 applications, this thermostat is specified for 190-degree operation and is listed with alternate-temperature and OE-temperature fitments where applicable.

Key Features

• Gates Heavy-Duty Thermostat, part number 33579
• Weir-Stat design for controlled coolant flow response
• 190-degree start-to-open temperature
• Stainless steel, steel, and copper construction
• 2.87 in. sealing flange outside diameter
• 2.28 in. valve diameter
• 3.17 in. overall height with 1.3 in. height between flanges
• No jiggle pin weep hole and no installation tool included

Product Details

Gates 33579 is part of the Heavy-Duty Thermostat line, engineered for harsh underhood conditions where noise, vibration, and thermal cycling place extra stress on cooling components. The Weir-Stat design helps regulate coolant flow at the specified opening temperature, supporting stable engine operating temperature in applications such as the Dodge Ram 2500, Dodge Ram 3500, BMW M5, and BMW M6. This thermostat cross-references Monroe Shocks & Struts 32249 for the same application.

What This Thermostat Helps Address

• Engine running too cool or too warm due to thermostat wear
• Delayed coolant circulation after cold start
• Temperature fluctuation from a sticking thermostat
• Cooling system instability in high-vibration duty cycles
• Replacement needs for OE-temperature and alternate-temperature applications

Installation Notes

Verify the 190-degree specification, flange dimensions, and vehicle application before installation. Clean the thermostat housing sealing surface thoroughly and inspect the coolant passages, housing, and gasket surface for corrosion or debris. This part is listed without a gasket, so confirm the required sealing components for the specific vehicle before assembly.

Fits 2015-2017 Dodge Viper, N/A; Fits 1992-1995 Dodge Viper, N/A; Fits 2006-2008 BMW M5, N/A; Fits 2006-2008 BMW M6, N/A; Fits 2004-2006 Dodge Ram 1500, N/A; Fits 2006 Ford GT, N/A; Fits 1994-2003 Dodge Ram 2500, N/A; Fits 1994-2003 Dodge Ram 3500, N/A.

Quality Assurance

Gates designs its Heavy-Duty Thermostat line for durability in demanding cooling-system service, with materials selected to handle heat, vibration, and long-term engine use. Part number 33579 is built to meet the temperature and dimensional requirements listed for the confirmed applications.