Mann Filter - WDK725 - Fuel Filter

This fuel filter removes contaminants from the diesel supply before it reaches the injection system. It sits in the fuel line between the tank and the high-pressure pump, protecting the injectors and pump internals from abrasive particles. A clogged filter restricts fuel flow, causing power loss and rough running under load. The manufacturer machines the sealing surfaces to match the original housing, ensuring the gasket seats correctly and no air is drawn into the fuel stream. When replacing, clean the housing sealing surface and tighten the filter canister by hand until the gasket contacts the housing, then give an additional turn as specified.