Gates 34025S Engine Coolant Thermostat

Gates Premium Thermostat 34025S Overview

The Gates Premium Thermostat 34025S is an engine coolant thermostat built for stable temperature control and corrosion resistance. It uses stainless steel and copper construction with a reverse poppet design to support consistent coolant flow in a wide range of GM and Saab applications.

Compatible With 2000-2017 Buick Regal, Buick Verano, Chevrolet Equinox, GMC Terrain, Chevrolet Malibu, Chevrolet Cobalt, Saturn Vue, and related models, this 180 degree thermostat is a direct-fit service part for OE-temperature cooling system repair.

Key Features

• Premium thermostat design for engine coolant temperature regulation
• Heavy-gauge stainless steel and copper construction for improved corrosion resistance
• Reverse poppet design for controlled coolant flow
• 180 degree start-to-open temperature for OE-style operation
• Built for applications including Buick, Chevrolet, GMC, Pontiac, Saturn, Saab, and Oldsmobile models
• Part number 34025S for easy identification and ordering

Product Details

Gates Premium Thermostat line products are engineered with upgraded spring performance to help maintain temperature stability during normal operation. The 34025S thermostat is specified as a premium thermostat with a 180 degree opening point, stainless steel and copper materials, and a compact housing profile for the listed engine cooling applications. This part cross-references Stant 46628 for the same application.

Common Cooling System Issues It Can Address

• Engine running too cool or too warm due to thermostat wear
• Delayed warm-up and inconsistent cabin heat
• Temperature fluctuation during stop-and-go driving
• Cooling system service on high-mileage Buick, Chevrolet, GMC, Pontiac, Saturn, or Saab vehicles
• Replacement of a thermostat with corrosion or spring fatigue

Installation Notes

• Verify engine application by year, make, and model before installation.
• Confirm the 180 degree OE-temperature specification matches the original thermostat requirement.
• Inspect the thermostat housing, sealing surfaces, and coolant condition during service.
• Follow the vehicle service manual for coolant refill and bleed procedures after installation.
• Use the listed fitment notes for models that specify seal included.

Quality Assurance

Gates Premium Thermostat components are built with corrosion-resistant materials and an upgraded spring design to support stable temperature control under normal operating conditions. The 34025S is listed for direct replacement use across expanded fitment including 2011-2017 Buick Regal, 2012-2017 Buick Verano, 2016-2017 Chevrolet Equinox, 2015-2017 GMC Terrain, and 2004-2014 Chevrolet Malibu applications.