Four Seasons 86029 Engine Coolant Water Outlet - Upper

Engine Coolant Water Outlet for Mazda Applications

Four Seasons Water Outlet 86029 is an engine coolant water outlet built for direct replacement use in select Mazda cooling systems. It is a plastic outlet, supplied without a thermostat and without a gasket or seal, and it meets or exceeds OEM requirements for fit and function.

Use this Four Seasons 86029 water outlet when servicing upper coolant outlet connections on supported Mazda 3, Mazda 6, CX-3, CX-5, and CX-50 applications. The part number 86029 is also referenced by several interchange numbers for the same application.

Key Features

• Brand: Four Seasons Water Outlet
• Part number: 86029
• Engine coolant water outlet, type: outlet
• Plastic construction for cooling system replacement use
• Style: without thermostat
• Thermostat included: not included
• Gasket or seal included: not included
• Meets or exceeds OEM specifications
• Inlet diameter: 1.116 in.
• Maximum height: 1.86 in.
• Bolt hole center to bolt hole center: 2.028 in.
• Mounting flange width: 0.454 in.

Detailed Description

Four Seasons 86029 is an engine coolant water outlet designed for Mazda cooling system service where an upper outlet housing is required. It is listed for 2023-2025 Mazda CX-50 upper outlet applications, plus select Mazda 3, Mazda 3 Sport, Mazda 6, CX-3, and CX-5 models across the 2012-2018 range. This part number 86029 is a direct OE-style replacement choice for technicians replacing a worn, cracked, or leaking coolant outlet housing.

This Four Seasons Water Outlet line focuses on cooling-system replacement parts built to match original equipment dimensions and connection points. The housing is made from plastic and is specified without a thermostat, so it is intended for applications where the thermostat is serviced separately. Cross-reference part numbers include 815849 and CH6129 for the same application.

What This Part Helps Address

• Coolant leaks at the upper water outlet housing
• Cracked or heat-aged plastic coolant outlet components
• Improper sealing at the coolant outlet connection
• Cooling system service on Mazda 3, Mazda 6, CX-3, CX-5, and CX-50 models
• Replacement of an outlet housing that no longer meets OE fit requirements

Installation Notes and Tips

• Verify the vehicle year, model, and upper outlet position before ordering.
• Confirm thermostat service needs separately, since the thermostat is not included.
• Confirm gasket or seal requirements before installation, since a gasket or seal is not included.
• Inspect mating surfaces, hose connections, and fastener points for wear or damage before assembly.
• Use the listed inlet diameter, bolt spacing, and flange width to confirm fitment during service.

Quality Assurance

Four Seasons 86029 meets or exceeds OEM specifications for the listed applications. The part is engineered as an OE-style replacement water outlet for Mazda cooling system repairs.