Gates 33479S Engine Coolant Thermostat

Gates Premium Thermostat 33479S Overview

The Gates Premium Thermostat 33479S is an engine coolant thermostat built for stable temperature control and corrosion resistance. Its stainless steel and copper construction, along with an upgraded spring, supports consistent opening performance in normal operating conditions.

Compatible With Ford Ranger, Ford F-100 Ranger, Ford Taurus, Isuzu Rodeo, Honda Passport, and other listed applications, this thermostat is a direct-fit cooling system service part for vehicles that call for a 195 degree thermostat.

Key Features

• Heavy-gauge stainless steel and copper construction for improved corrosion resistance
• 195 degree start-to-open temperature for OE-style cooling system operation
• Offset reverse poppet design for listed applications
• Jiggle pin weep hole included for air bleeding during service
• Upgraded spring for more stable temperature control under normal operation
• Gates Premium Thermostat line focuses on durable cooling system replacement parts

Detailed Description

Gates 33479S is a premium engine coolant thermostat designed for a wide range of Ford, Isuzu, Honda, Nissan, Subaru, Mazda, and Geo applications. It is listed for 1996-2008 Ford Ranger, 1996-2001 Ford F-100 Ranger, and 1998-1999 Ford Taurus, plus many older import platforms including Isuzu Rodeo, Honda Passport, Nissan D21, Nissan Sentra, Subaru Standard, and others. This part cross-references Four Seasons 65859 for the same application.

The Premium Thermostat line uses a corrosion-resistant metal construction and a stronger spring to help maintain consistent coolant flow control. The 195 degree opening point matches OE-temperature service needs on many of the listed vehicles, including Ford Ranger and Ford Taurus cooling system repairs. Part number 33479S is also referenced in interchange listings for related aftermarket catalog applications.

Common Problems This Part Can Address

• Engine running too cool or too warm due to thermostat wear
• Unstable coolant temperature during normal driving
• Corrosion-related thermostat housing or valve deterioration
• Delayed coolant circulation after cold starts
• Cooling system service on vehicles requiring a 195 degree thermostat

Installation Notes and Tips

Verify the thermostat housing style, sealing flange dimensions, and temperature specification before installation. This unit uses an offset reverse poppet design and includes a jiggle pin weep hole; orient the jiggle pin according to the vehicle service procedure so trapped air can escape during refill. Clean the mating surfaces thoroughly and inspect the housing and coolant condition before reassembly.

For fitment-specific service, confirm the application against the vehicle’s year, make, model, and OE temperature requirement. Common listings include Fits 1996-2008 Ford Ranger, N/A; Fits 1996-2001 Ford F-100 Ranger, N/A; Fits 1998-1999 Ford Taurus, N/A; and Fits 1991-1997 Isuzu Rodeo, N/A.

Quality Assurance

Gates designs the Premium Thermostat line with stainless steel construction and an upgraded spring to support durable, stable cooling system performance. Part number 33479S is built for direct replacement use in the listed applications and follows the temperature and design requirements shown in the catalog data.