Gates 33922 Engine Coolant Thermostat

OE Type Thermostat for Precise Cooling Control

The Gates 33922 OE Type Thermostat is built for direct-fit cooling system service with OEM-equivalent temperature control and a leak-resistant seal. It is a strong match for drivers servicing Chevrolet Express 2500, GMC Savana 3500, Ford F-250, and other listed applications that call for a 190-degree thermostat.

Key Features

• OE Type Thermostat with balanced sleeve design for stable coolant regulation
• Start-to-open temperature: 190°F / 88°C
• Stainless steel and copper construction for corrosion resistance
• O-ring seal material with one jiggle pin / check valve
• Jiggle pin weep hole included for air bleeding during service
• OE Performance comparison rating for factory-style operation
• Gates part number 33922 for easy identification

Product Details

Gates OE Type Thermostats are engineered for precise temperature control and a leak-free, OEM-equivalent fit. This thermostat uses a balanced sleeve design, stainless steel and copper materials, and an O-ring seal to support consistent coolant flow in the engine cooling system. The 190-degree opening specification matches the listed OE-temperature applications, making this Gates 33922 thermostat a direct replacement choice for many Chevrolet, GMC, Ford, and Hummer trucks and vans.

This part cross-references Motorad 423-195 and Stant 14399 for the same application.

What It Helps Address

• Engine running too cool or too warm due to thermostat wear
• Coolant flow irregularities caused by a sticking thermostat
• Temperature fluctuation during stop-and-go driving
• Leak points at the thermostat seal or flange area
• Air trapped in the cooling system after thermostat service

Installation Notes and Tips

Verify the vehicle’s OE temperature requirement before installation. Some Ford applications note removal of the seal on the thermostat flange, so confirm the service note for the exact model and year. Clean the housing mating surface thoroughly, inspect the coolant passage for debris, and replace coolant as needed during thermostat service. Confirm the thermostat orientation and allow the jiggle pin weep hole to aid air bleeding.

Compatible with select 1983-2004 Ford E-Series and F-Series models, 1996-2002 Chevrolet and GMC trucks and vans, 1997-1999 GMC Suburban and P3500 applications, and 2002-2004 Hummer H1 listings. Fits 1999-2002 Chevrolet Express 2500, 1998-2002 GMC Savana 3500, and 1994 Ford F-250 applications shown in the fitment data.

Quality Assurance

Gates OE Type Thermostats are built to OE-style specifications for temperature control and sealing performance. The Gates 33922 is designed to deliver factory-equivalent fit and function for the listed applications.