Gates 34163S Engine Coolant Thermostat

Gates Premium Thermostat 34163S Overview

The Gates Premium Thermostat 34163S is a direct-fit engine coolant thermostat built for temperature control in a wide range of GM vehicles. It uses stainless steel and copper construction, a bottom by-pass design, and an O-ring seal to support consistent coolant flow and stable operating temperature.

Compatible With Chevrolet Impala, Traverse, Colorado, Camaro, Equinox, Malibu, Captiva Sport, Buick Enclave, LaCrosse, Allure, Cadillac ATS, CTS, SRX, XTS, GMC Acadia, Terrain, Canyon, Saturn Aura, Outlook, Vue, Pontiac G6, G8, Torrent, Saab 9-4X, and Oldsmobile Aurora applications. Part number 34163S is also listed with OE-style fitment across multiple 2001-2018 vehicles.

Key Features

• Premium thermostat design for engine coolant temperature regulation
• Heavy-gauge stainless steel construction for improved corrosion resistance
• Upgraded spring for more stable opening performance under normal operation
• Bottom by-pass design with one jiggle pin/check valve
• O-ring seal type for a secure sealing interface
• Starts to open at 180 degrees Fahrenheit / 82 degrees Celsius
• Includes installation tool

Product Details

Gates Premium Thermostat 34163S is engineered for vehicles that require a 180-degree thermostat and OE-temperature operation. The stainless steel and copper material mix supports durability in the cooling system, while the jiggle pin weep hole helps with air bleeding during service. This thermostat is listed for applications such as 2014-2018 Chevrolet Impala, 2008-2017 Buick Enclave, and 2009-2017 Chevrolet Traverse, along with many other Cadillac, GMC, Pontiac, Saturn, and Saab models. If you are replacing a worn thermostat on a Chevrolet Camaro, Cadillac CTS, or GMC Acadia, 34163S provides the correct cooling-system service part for the listed applications.

This part cross-references Dorman - HELP 34163 and Bosch 15148 for the same application.

Common Problems This Part Can Address

• Engine running too cool or too hot due to thermostat wear
• Delayed coolant circulation during warm-up
• Temperature fluctuation from a weakened thermostat spring
• Corrosion-related thermostat housing interface issues
• Coolant seepage at the sealing surface when the original seal is worn

Installation Notes

Verify the vehicle’s thermostat style before installation, since some listed applications use a housing and others exclude the housing. Confirm the 180-degree temperature specification, bottom by-pass design, and seal type before service. Clean the mating surfaces thoroughly, inspect the cooling system for contamination, and follow the vehicle manufacturer’s bleed procedure after installation to remove trapped air.

Quality Assurance

Gates Premium Thermostats are built with heavy-gauge stainless steel construction and an upgraded spring to support corrosion resistance and temperature stability in normal operation. The 34163S is a Gates Premium Thermostat engineered for OE-style cooling-system service.