Four Seasons 86187 Engine Coolant Water Outlet

Four Seasons Water Outlet 86187

Four Seasons 86187 is an aluminum engine coolant water outlet for select Acura and Honda applications. It is built as an outlet without a thermostat and meets or exceeds OEM requirements for direct-fit cooling system service.

For Acura MDX, Acura TL, and Honda Accord owners searching for an engine coolant water outlet replacement, this Four Seasons Water Outlet line part provides the correct inlet diameter, mounting layout, and OE-style construction for the listed applications.

Key Features

• Aluminum construction for cooling system durability
• Outlet style, without thermostat
• Gasket or seal not included
• Bleeder screw not included
• 2 mounting holes with 3.125 in. bolt hole center spacing
• 1.250 in. inlet diameter
• Maximum height: 2.800 in.
• Mounting flange width: 0.485 in.
• Symmetrical base design
• Meets or exceeds OEM specifications

Product Details

The Four Seasons Water Outlet 86187 is an engine coolant component used to route coolant through the cooling system at the outlet connection point. Its aluminum body supports reliable fitment in service applications where the original water outlet has corroded, cracked, or begun leaking. This part number is listed for 2003-2009 Acura MDX, 2004-2008 Acura TL, and 2003-2004 Honda Accord applications, making it a direct replacement option for common cooling system repairs on these vehicles.

This part cross-references Gates CO34815 for the same application.

What It Helps Fix

• Coolant leaks at the water outlet housing
• Cracked or corroded outlet bodies
• Improper sealing at the coolant connection point
• Cooling system service needs after thermostat housing wear
• Fitment issues caused by damaged mounting surfaces

Installation Notes and Tips

Verify the inlet diameter, bolt hole spacing, and mounting hole count against the original part before installation. Because the gasket or seal is not included, transfer or replace the sealing component as required during service. This outlet is supplied without a thermostat and without a bleeder screw, so confirm your vehicle’s cooling system configuration before installation. For Acura MDX, Acura TL, and Honda Accord cooling repairs, clean the mating surfaces thoroughly to help ensure proper sealing.

Quality Assurance

Four Seasons lists this water outlet as meeting or exceeding OEM requirements for the specified applications. The aluminum construction and OE-style dimensions support accurate replacement of the original engine coolant outlet on the listed vehicles.