Gates 33488S Engine Coolant Thermostat

Gates Premium Thermostat 33488S Overview

The Gates Premium Thermostat 33488S is an engine coolant thermostat built for stable temperature control in a wide range of import and domestic applications. It uses stainless steel and copper construction with an upgraded spring to help maintain consistent opening performance under normal operating conditions.

Compatible With select Kia Rio, Mazda Miata, Honda Accord, Toyota Corolla, and other listed applications, this 180-degree thermostat is a direct-fit cooling system service part for vehicles that call for OE or alternate temperature control.

Key Features

• Premium thermostat design for engine coolant temperature regulation
• Heavy-gauge stainless steel and copper construction for corrosion resistance
• Upgraded spring for improved temperature stability during normal operation
• 180-degree start-to-open temperature
• Offset reverse poppet design
• Jiggle pin weep hole included for air bleeding during service
• Gates Premium Thermostat line for cooling system replacement parts

Detailed Description

Gates 33488S is engineered as a premium engine coolant thermostat for vehicles that require a 180-degree opening point. The stainless steel and copper body helps resist corrosion in the cooling system, while the spring design supports consistent operation as coolant temperatures rise and fall. The offset reverse poppet layout and jiggle pin weep hole are important details for proper coolant flow and air management in the housing.

This thermostat is listed across many applications, including 2001-2005 Kia Rio, 2001-2004 Mazda Miata, 1976-1989 Honda Accord, and 1970-1982 Toyota Corolla. It also cross-references Stant 45868 for the same application.

What It Helps Address

• Engine running too cool or too warm due to thermostat wear
• Slow warm-up after cold starts
• Temperature fluctuation from a weak thermostat spring
• Corrosion-related thermostat sticking in the cooling system
• Air trapped in the cooling circuit after service

Installation Notes and Tips

Verify the required opening temperature and housing style before installation. This part uses an offset reverse poppet design and does not include an installation tool. Clean the thermostat housing sealing surfaces thoroughly, inspect the coolant condition, and follow the vehicle service procedure for bleeding air from the system using the jiggle pin weep hole as directed by the manufacturer.

For fitment-specific searches, this part is commonly selected for 180-degree thermostat replacement on Kia Sephia, Mazda Protege, and Honda Prelude applications listed in the catalog.

Quality Assurance

Gates Premium Thermostats are built with corrosion-resistant metal construction and an upgraded spring design to support stable temperature control during normal operation. Part number 33488S is cataloged for broad vehicle coverage and OE-style cooling system service.