Gates 34703 Engine Coolant Thermostat

Integrated thermostat housing for Honda and Acura

Gates 34703 is an integrated housing thermostat built for precise engine coolant temperature control. It is a direct-fit style replacement for select Honda Accord, Honda Crosstour, and Acura TSX applications, with OE performance positioning and a seal included.

Key features

• Integrated housing thermostat design for modern cooling systems
• Start-to-open temperature: 172°F (78°C)
• 3 bolt holes for OE-style mounting
• Jiggle pin weep hole and jiggle pin/check valve: yes
• Outlet inside diameter: 0.975 in; outlet outside diameter: 1.27 in
• Non-electric thermostat construction
• OE performance rating for factory-style temperature regulation

Product details

The Gates Integrated Housing Thermostat line is built around the growing use of thermostat-and-housing assemblies in late-model cooling systems. Part number 34703 is engineered to regulate coolant flow at the specified opening temperature, helping the engine reach and maintain operating temperature in a controlled range. For drivers searching for a 172 degree thermostat for 2008-2012 Honda Accord, 2009-2014 Acura TSX, or 2012-2015 Honda Crosstour, this unit matches the listed OE-style application and housing configuration.

This part cross-references Dayco 72972 and Motorad 729-172 for the same application. Gates 34703 is also listed against OE-style numbers including 19301-R40-A01 and 19301-R40-A02 in interchange data.

Common issues this part can address

• Engine running too cool or too warm due to thermostat wear
• Temperature fluctuation from a sticking thermostat valve
• Cooling system service needs on integrated housing designs
• Check-engine concerns related to coolant temperature regulation
• Loss of proper warm-up performance in Honda Accord, Acura TSX, and Honda Crosstour applications

Installation notes and tips

Verify the housing style, bolt-hole count, outlet dimensions, and temperature rating before installation. This thermostat uses an integrated housing design with a seal included, so the mating surfaces should be clean and free of old gasket material before assembly. Confirm the cooling system is properly bled after service to avoid trapped air and inaccurate temperature control.

Quality assurance

Gates positions this integrated thermostat housing line as an OE-performance aftermarket solution backed by its cooling-system research and development focus. The design is intended to provide accurate temperature regulation for vehicles that use integrated thermostat housings from the factory.