Four Seasons 85685 Engine Coolant Outlet Flange - Rear

Engine Coolant Outlet Flange Overview

Four Seasons 85685 is an engine coolant outlet flange for select Audi and Volkswagen applications. This plastic coolant flange is built as a direct-fit style replacement for vehicles that use a three-outlet, thermostat-free coolant connection at the rear of the cooling system.

Compatible with 1996-2002 Audi A4 Quattro, 2001-2002 Audi S4, 1996-2001 Audi A4, and 1998-2001 Volkswagen Passat, rear. Four Seasons Coolant Flange 85685 is made to meet or exceed OEM requirements for the listed applications.

Key Features

• Brand: Four Seasons Coolant Flange
• Part number: 85685
• Engine coolant outlet flange / coolant flange design
• Plastic construction
• Three outlet ports for coolant routing
• Style: without thermostat
• Two mounting holes
• OEM-style replacement that meets or exceeds OEM specifications
• Cross-reference: Dorman - Conduct-Tite 85685

Detailed Product Description

Four Seasons 85685 is an engine coolant outlet flange designed for cooling-system service on Audi A4, Audi A4 Quattro, Audi S4, and Volkswagen Passat models listed above. The flange uses a plastic body with three outlets and a thermostat-free layout, making it a direct replacement for the original coolant connection on the rear of the engine where applicable. Measured outlet and hose dimensions are provided to support accurate matching during repair work, including a 1.505 in hose diameter and outlet sizes of 1.360 in and 1.290 in on the listed ports.

This Four Seasons coolant flange is intended for technicians and DIY repairs addressing cracked, leaking, or heat-aged coolant outlet housings on the specified Audi and Volkswagen vehicles. Part number 85685 is also referenced by several aftermarket numbers, including Motorad CH2886 and URO 058121133B, for the same application.

Common Repair Issues

• Coolant leaks from a cracked or warped flange
• Loss of coolant at the rear coolant outlet connection
• Failed sealing surface at the engine coolant housing
• Cooling-system service on aging Audi A4, Audi A4 Quattro, Audi S4, or Volkswagen Passat models
• Replacement of a thermostat-free coolant outlet flange with the correct port layout

Installation Notes and Tips

Verify the outlet count, hose diameters, and mounting-hole spacing before installation. This flange does not include mounting hardware or a gasket/seal, so those service parts must be sourced separately as needed. Clean the mating surfaces thoroughly and inspect adjacent hoses and clamps for wear before reassembly. Confirm rear-position fitment on the 1998-2001 Volkswagen Passat and the listed Audi applications before final installation.

Quality Assurance

Four Seasons 85685 is listed as meeting or exceeding OEM specifications for the covered applications, supporting a direct replacement approach for factory-style cooling-system repair on Audi and Volkswagen vehicles.