* Pump Capacity/Pressure: The turbocharged engine likely requires a higher-pressure or higher-capacity pump to meet the demands of the increased power output.
* Mounting Points/Brackets: Even if the pump itself is similar, the mounting points on the engine block might differ slightly between the naturally aspirated and turbocharged versions.
* Pulley Size/Configuration: The pulley driving the pump might have different dimensions to match the engine's accessory belt configuration.
In short: Don't assume compatibility. You need to cross-reference the part numbers of the pumps or visually compare them carefully before attempting to install one. Using an incorrect pump could lead to steering issues or even damage to the system. Checking with a Citroen parts specialist or using a reputable online parts catalog (giving your car's VIN) is strongly recommended.
