THB Verhoef bv is a Benelux operating agent and stockist for high quality key components for your marine/stationary diesel and gas engines (since 1981). To assure quality products & services, we are an exclusive agent & stockist for the following OEM-manufacturers: Cylinderhead components (Märkisches Werk Halver - MWH) Fuel injection equipment (Duap) Piston rings (Goetze Federal-Mogul) Bearings (Miba)