B4 Passat Water Flange - 1996-00 - 1.9TDI (AFN,AHU)

This plastic water flange is an essential component of the engine cooling system on VW B4 Passats manufactured from October 1996 to August 2000, specifically those fitted with the 1.9 TDI AFN or 1.9 TDI AHU engine codes. This flange mounts to the cylinder head and serves as a connection point for coolant hoses, helping route coolant through the system to maintain optimal engine temperature.

A common failure point due to heat cycling and age, the original plastic flanges can become brittle, warped, or cracked, leading to coolant leaks and overheating issues. This replacement unit is a high-quality plastic reproduction, made to OE specifications for a precise fit and long-term reliability.

It’s recommended to replace the rubber O-ring (not included) and inspect connected coolant hoses when fitting a new flange to ensure a complete and leak-free installation.

Fitment:

• Mounts to engine cooling system

• Designed for use with 1.9 TDI AFN and AHU engines

Applications:

• VW Passat B4: 10/1996 – 08/2000
  – 1.9 TDI AFN engine code
  – 1.9 TDI AHU engine code