Genuine OEM Volkswagen Over-Centre Spring, part number 1J1721403G. This spring provides a self-centering or self-locking action within a mechanism, typically related to the clutch or brake pedal assembly. It is located at position 13 in the diagram. Made of steel, it weighs 0.072 kg. Genuine OEM springs are manufactured to precise tolerances to ensure consistent and reliable operation, preventing premature wear or failure.