Gates 33868S Engine Coolant Thermostat

Gates Premium Thermostat 33868S Overview

The Gates Premium Thermostat 33868S is an engine coolant thermostat built for OE-style temperature control in a wide range of Toyota, Lexus, Scion, Mitsubishi, Ford, Chevrolet, Dodge, and Pontiac applications. Its stainless steel and copper construction helps resist corrosion, while the upgraded spring supports more stable opening performance during normal operation.

Compatible with popular applications such as Toyota Camry, Toyota Corolla, and Lexus RX350, this 180-degree thermostat is a direct-fit cooling system service part for vehicles that rely on consistent coolant regulation.

Key Features

• Premium thermostat design for engine coolant temperature control
• Heavy-gauge stainless steel construction with copper components
• 180°F / 82°C start-to-open temperature for OE-style operation
• Bottom by-pass design for supported applications
• Jiggle pin weep hole included for air bleeding during service
• Corrosion-resistant construction for long-term cooling system use
• Gates part number 33868S for catalog and service reference

Product Details

Gates Premium Thermostat 33868S is engineered to regulate coolant flow at the specified opening temperature so the engine can reach and maintain proper operating range. The stainless steel body improves corrosion resistance, and the upgraded spring helps maintain temperature stability under normal driving conditions. This thermostat is listed with a bottom by-pass design, 2.2-inch sealing flange outside diameter, 1.7-inch height between flanges, and a jiggle pin weep hole for easier air evacuation during installation and service. This part cross-references Four Seasons 35078 and Dorman - HELP 46078 for the same application.

Used For These Cooling Issues

• Engine running too cool or taking too long to warm up
• Temperature fluctuation during stop-and-go driving
• Coolant flow control problems caused by a worn thermostat
• Corrosion-related thermostat housing or valve wear
• Cooling system service on Toyota Camry, Toyota Corolla, Lexus RX350, and similar applications

Installation Notes

Verify the 180-degree opening specification and bottom by-pass configuration before installation. Inspect the thermostat housing, sealing surfaces, and coolant condition during service, and confirm the jiggle pin orientation follows the vehicle service procedure. This part is listed without an installation tool, so use the correct service tools and follow the manufacturer repair manual for the specific Toyota, Lexus, Scion, Mitsubishi, or other listed application.

Quality Assurance

Gates Premium Thermostats use heavy-gauge stainless steel construction and an upgraded spring to support corrosion resistance and stable temperature control in normal operation. Part number 33868S is cataloged as a premium thermostat for OE-temperature service applications.