Four Seasons 86309 Engine Coolant Water Outlet

Four Seasons Water Outlet for Mazda Miata

The Four Seasons 86309 engine coolant water outlet is a direct-fit cooling system component for select Mazda Miata applications. Built from aluminum and engineered to meet or exceed OEM requirements, it supports reliable coolant routing in the thermostat and housing area.

Compatible with 1994-1997 and 1999-2005 Mazda Miata models, this Four Seasons Water Outlet is a practical OE-style replacement for service work on the cooling system. The Four Seasons 86309 is specified as an outlet-style part without a thermostat and without a gasket or seal included.

Key Features

• Aluminum construction for durable cooling system service
• Outlet-style engine coolant water outlet
• Meets or exceeds OEM specifications
• Designed without thermostat
• Gasket or seal not included
• Inlet diameter: 1.22 in.
• Bolt hole center to bolt hole center: 2.64 in.
• Maximum height: 2.27 in.
• Mounting flange width: 0.39 in.

Detailed Description

Four Seasons Water Outlet 86309 is part of the brand’s Water Outlet line, a cooling-system product line focused on engine coolant components for thermostat and housing service. This aluminum outlet is built for Mazda Miata cooling system applications where a replacement outlet is needed without an integrated thermostat. It cross-references Focus Auto Parts 86309 and also interchange references BPE815172 and PRT 817139 for the same application.

Use this part when servicing a Mazda Miata cooling passage that requires an outlet-style coolant connection with the listed dimensions and OE-level fit expectations. The Four Seasons 86309 is a straightforward replacement for 1994-1997 Mazda Miata and 1999-2005 Mazda Miata models.

What It Is Used For

• Replacing a leaking or corroded coolant outlet on a Mazda Miata
• Restoring proper coolant routing at the thermostat and housing area
• Addressing coolant seepage around the outlet connection
• Replacing a damaged aluminum outlet during cooling system repair
• Supporting service work on 1994-1997 and 1999-2005 Mazda Miata cooling systems

Installation Notes and Tips

Verify the inlet diameter, bolt spacing, and mounting dimensions against the original part before installation. This outlet does not include a thermostat or gasket/seal, so confirm the correct sealing components are selected for the vehicle and repair procedure. Clean the mating surfaces thoroughly and inspect adjacent hoses and housing surfaces for wear before reassembly.

Quality Assurance

Four Seasons states that this part meets or exceeds OEM requirements, making it an OE-style replacement for Mazda Miata cooling system service. Confirm vehicle application by year and model before ordering the Four Seasons 86309.