Four Seasons 86342 Engine Coolant Outlet Flange

Four Seasons 86342 Coolant Flange Overview

Four Seasons 86342 is an engine coolant outlet flange for select Audi applications. Built from plastic with a quick-connect outlet design, it supports coolant routing at the engine outlet while matching OE-style fitment details for service replacement work.

Compatible with Audi A4, A4 Quattro, A4 allroad, A5, A5 Quattro, A6, A6 Quattro, allroad, and Q5 applications, this coolant flange is a direct-fit solution for vehicles that use a 3-port, thermostat-free outlet layout. The Four Seasons coolant flange line is focused on engineered replacement parts backed by decades of mobile A/C and cooling system experience.

Key Features

• Part number 86342 engine coolant outlet flange
• Plastic construction for OE-style cooling system service
• Quick-connect open attachment for the outlet connection
• 3 outlet ports with 0.86 in outlet diameter
• 2-bolt mounting pattern with 2.44 in bolt hole spacing
• Designed without thermostat lip and without gasket or seal included
• Fits thermostat-free coolant flange applications

Detailed Description

Four Seasons 86342 is an engine coolant components flange used to route coolant through the outlet side of the cooling system. Its 3-port layout, quick-connect attachment, and 2-hole mounting design make it a practical replacement for Audi cooling system repairs where the original flange has cracked, warped, or begun leaking. This part cross-references Gates CO35048 for the same application.

Use this coolant flange on select 2009-2017 Audi A4, A4 Quattro, A4 allroad, A5, A5 Quattro, A6, A6 Quattro, allroad, and Q5 models where the OE configuration calls for a thermostat-free outlet flange. The Four Seasons 86342 part number is also referenced in OE-style service catalogs for related Audi cooling repairs.

What It Helps Fix

• Coolant leaks at the engine outlet flange
• Cracked or brittle plastic coolant housing
• Loose or failing quick-connect coolant attachment
• Improper coolant routing from a damaged outlet flange
• Cooling system service issues caused by worn mounting points

Installation Notes and Tips

Confirm the vehicle’s OE flange style, outlet count, and bolt-hole spacing before installation. This part uses a quick-connect outlet and does not include a gasket or seal, so inspect the mating surfaces and replace any worn sealing components as needed during service. Verify the application against the existing flange on the vehicle before final assembly.

Quality Assurance

Four Seasons engineers and tests its cooling and mobile A/C products for dependable operation over time. The brand’s long-standing experience in mobile A/C and cooling system components supports the design and validation of part number 86342 for routine repair use.