Reliable replacement washer fluid reservoir designed for Peugeot 107 and Citroën C1 models produced up to 2013. This washer bottle is an essential service part for workshops and DIY mechanics who need a durable, correctly shaped tank that fits the original mounting points. Frequently sought under part numbers 6405V9 and B000643380, this unit restores proper windshield cleaning function after cracks, leaks or impact damage.

Technical Information

• Manufacturer: Citroën / Peugeot (Stellantis)
• Model: Peugeot 107, Citroën C1 (up to 2013)
• Product Codes: 6405V9, B000643380
• Other Numbers: Not Specified

Fitment And Function

The washer fluid reservoir stores windshield washer fluid and supplies it to the washer pump and nozzles. It is shaped to match the engine bay layout of the Peugeot 107 and Citroën C1, ensuring correct hose routing and secure mounting. This part is a direct-fit replacement for the original tank and helps maintain clear visibility in wet and dirty conditions.

Installation Recommendation

Installation is straightforward for an experienced mechanic or competent DIYer. General steps:

• Open the bonnet and locate the washer reservoir in the engine bay.
• Disconnect the negative battery terminal as a safety precaution before working on electrical components.
• Drain any remaining washer fluid, then unplug the washer pump electrical connector (if present) and disconnect the washer hoses.
• Remove retaining clips or bolts securing the reservoir, withdraw the old tank and replace with the new unit, ensuring correct alignment of mounting points and hose connections.
• Reconnect electrical connector and hoses, refill with washer fluid, reconnect the battery and test the washer system for leaks and proper operation.

Why The Part Commonly Fails

• Material Degradation: Plastic tanks can become brittle over time due to heat cycles and UV exposure, leading to cracks and leaks.
• Freezing Damage: In climates without appropriate antifreeze in the washer fluid, frozen fluid can expand and split the reservoir.
• Impact And Corrosion: Minor collisions or debris contact in the engine bay can puncture or crack the bottle.
• Worn Seals And Grommets: Leaks often occur where the pump or hoses pass through the tank grommets.

Whether you are outfitting a workshop or repairing your own vehicle, this washer fluid reservoir (6405V9 / B000643380) offers a practical solution to restore washer functionality and keep windscreen visibility reliable. Add this direct-fit replacement to your repair order and ensure safe driving visibility in all weather conditions.