Gates 33568S Engine Coolant Thermostat

Gates Premium Thermostat 33568S Overview

The Gates Premium Thermostat 33568S is an engine coolant thermostat built for stable temperature control in a wide range of Honda, Acura, Isuzu, and Toyota applications. It uses stainless steel and copper construction with an upgraded spring to help maintain consistent opening behavior during normal operation.

For drivers servicing a Honda Civic, Honda Accord, or Acura Integra cooling system, this thermostat provides an OE-temperature 180-degree opening point in many listed applications. The Gates Premium Thermostat line focuses on corrosion resistance and temperature stability for dependable coolant flow management.

• Stainless steel and copper construction for improved corrosion resistance
• 180-degree start-to-open temperature for listed OE and alternate-temperature applications
• Bottom by-pass design
• Jiggle pin weep hole included for air bleeding during service
• Heavy-gauge housing and upgraded spring for stable operation
• Fits a broad range of Honda Civic, Honda Accord, Acura Integra, and related cooling system applications

Product Details

Part number 33568S is a premium thermostat designed around a bottom by-pass configuration with a 2.05-inch sealing flange outside diameter and 1.4-inch height between flanges. The unit measures 2.21 inches in overall height and includes one jiggle pin/check valve. Gates uses stainless steel and copper materials to improve corrosion resistance and support consistent coolant regulation. This part cross-references Dorman - Autograde 45878 and Four Seasons 65878 for the same application.

Vehicle Fitment

• Fits 2003-2012 Honda Civic, N/A; 180 Degree; OE Temperature; Premium Thermostat
• Fits 1996-1998 Honda Civic, N/A; 180 Degree; OE Temperature; Premium Thermostat
• Fits 1984-1991 Honda Civic, N/A; 180 Degree; OE Temperature; Premium Thermostat
• Fits 2010 Honda City, N/A; 180 Degree; Alternate Temperature; Premium Thermostat
• Fits 2006-2010 Honda Fit, N/A; 180 Degree; Alternate Temperature; Premium Thermostat
• Fits 2000-2006 Honda Insight, N/A; 180 Degree; Alternate Temperature; Premium Thermostat
• Fits 2002-2005 Acura EL, N/A; 180 Degree; Alternate Temperature; Premium Thermostat
• Fits 1999-2005 Honda Civic, N/A; 180 Degree; Alternate Temperature; Premium Thermostat
• Fits 1992-1995 Honda Civic, N/A; 180 Degree; Alternate Temperature; Premium Thermostat
• Fits 2004 Isuzu Axiom, N/A; 180 Degree; Alternate Temperature; Premium Thermostat
• Fits 1998-2002 Honda Accord, N/A; 180 Degree; Alternate Temperature; Premium Thermostat
• Fits 1990-1993 Honda Accord, N/A; 180 Degree; Alternate Temperature; Premium Thermostat
• Fits 2000-2001 Acura EL, N/A; 180 Degree; OE Temperature; Premium Thermostat
• Fits 1986-2001 Acura Integra, N/A; 180 Degree; OE Temperature; Premium Thermostat
• Fits 1997-2001 Honda CR-V, N/A; 180 Degree; Alternate Temperature; Premium Thermostat
• Fits 1997-1999 Acura CL, N/A; 180 Degree; OE Temperature; Premium Thermostat
• Fits 1995-1998 Honda Odyssey, N/A; 180 Degree; OE Temperature; Premium Thermostat
• Fits 1994-1997 Honda Accord, N/A; 180 Degree; OE Temperature; Premium Thermostat
• Fits 1993-1997 Honda Civic del Sol, N/A; 180 Degree; OE Temperature; Premium Thermostat
• Fits 1996-1997 Isuzu Oasis, N/A; 180 Degree; OE Temperature; Premium Thermostat
• Fits 1992-1996 Honda Prelude, N/A; 180 Degree; OE Temperature; Premium Thermostat
• Fits 1988-1991 Honda CRX, N/A; 180 Degree; OE Temperature; Premium Thermostat
• Fits 1981-1986 Toyota Pickup, N/A; 180 Degree; Alternate Temperature; Premium Thermostat

Common Cooling System Issues

• Engine running too cool or too hot due to thermostat sticking
• Slow warm-up after cold starts
• Temperature fluctuation during normal driving
• Coolant flow control problems caused by worn thermostat internals
• Corrosion-related thermostat failure in older cooling systems

Installation Notes

Verify the thermostat housing style, by-pass design, and temperature rating before installation. The jiggle pin weep hole should be oriented to help trapped air escape during coolant refill, and the cooling system should be properly bled after service. Confirm fitment for your Honda Civic, Honda Accord, Acura Integra, or other listed application using the vehicle year and engine cooling configuration.

Quality Assurance

Gates Premium Thermostats are built with heavy-gauge stainless steel construction and an upgraded spring to support corrosion resistance and temperature stability under normal operating conditions. The 33568S follows the brand’s premium thermostat design standards for consistent coolant regulation in listed applications.