H200WDK Fuel filter

Large-format spin-on fuel filter from Hengst for MAN trucks and buses requiring higher fuel flow capacity. The H200WDK is used in primary supply circuits where volume demand exceeds the capacity of smaller filter formats — confirm fitment using MPN H200WDK in the vehicle parts catalogue, as no OEM cross-reference number is listed for this unit. Hengst manufactures the filter media in Germany to OEM-equivalent micron ratings and water separation efficiency, consistent with MAN common rail injection system requirements. When the filter becomes loaded, fuel delivery pressure ahead of the lift pump drops, causing power reduction under high-load conditions before advancing to hard starting. Replace at the service interval in the MAN maintenance schedule, not by condition assessment — a filter can appear clean visually while already restricting flow at the micron level. Before fitting, inspect the filter head sealing face for corrosion or thread damage. Lubricate the O-ring seal with clean diesel and install hand-tight only — a filter wrench is for removal, not installation.