Gates 34014 Engine Coolant Thermostat

OE Type Thermostat for Mazda Cooling Systems

The Gates OE Type Thermostat 34014 is built for precise engine temperature control and a leak-free seal in Mazda cooling systems. It is an OE-style replacement for applications such as the Mazda 2, RX-8, Protege, Protege5, 626, Millenia, MPV, MX-6, and MX-3.

Gates OE Type Thermostats are engineered as direct-fit replacements with OEM-equivalent fit and temperature control. The 34014 thermostat uses a bottom by-pass design, an O-ring seal, and a jiggle pin weep hole to support stable coolant flow and consistent warm-up performance.

Key Features

• Part number: 34014
• OE Type Thermostat with OE Performance comparison rating
• Start-to-open temperature: 180°F / 82°C
• Bottom by-pass design for the listed Mazda applications
• Stainless steel and copper construction
• O-ring seal material with one seal and one jiggle pin/check valve
• Leak-resistant OE-style fit for cooling system service

Detailed Product Overview

This Gates thermostat is designed for drivers and technicians replacing a worn or inaccurate engine coolant thermostat in Mazda vehicles. By regulating coolant flow at the specified opening temperature, it helps the engine reach operating temperature properly and maintain stable coolant circulation once warm. The 34014 is a practical choice for Mazda 626 thermostat replacement, Mazda RX-8 cooling system service, and other fitments listed for 1992-2015 model years.

This part cross-references Dorman - HELP 38478 and Stant 48478 for the same application.

What It Helps Address

• Engine running too cool or taking too long to warm up
• Temperature fluctuation caused by a sticking thermostat
• Coolant seepage at the thermostat seal area
• Improper coolant flow control in Mazda cooling system service
• Check-engine concerns related to thermostat performance

Installation Notes and Tips

Verify the thermostat orientation, bypass design, and seal seating before installation. Clean the housing mating surfaces thoroughly and inspect the coolant passages for debris or corrosion. This thermostat does not include an installation tool.

Compatible With: 2011-2015 Mazda 2, 2004-2011 Mazda RX-8, 1999-2003 Mazda Protege, 2002-2003 Mazda Protege5, 1993-2002 Mazda 626, 1995-2002 Mazda Millenia, 1996-1998 Mazda MPV, 1993-1997 Mazda MX-6, and 1992-1994 Mazda MX-3.

Quality Assurance

Gates OE Type Thermostats are engineered to deliver precise temperature control and OEM-equivalent fit for the listed Mazda applications. The stainless steel and copper construction, O-ring sealing, and OE-style design support consistent cooling system service.