Citroën C4 Grand Picasso Rear Door Weatherstrip Seal Moulding Left N/S 9309L4

Citroën C4 Grand Picasso Rear Door Weatherstrip Seal Left N/S is an original body component from the Window seals and moldings group, designed for installation on the rear left door. The precisely matched geometry of the seal helps reduce noise, improve cabin acoustic comfort, and protect the interior against moisture and contaminants.

Specifications and technical data

• SKU: 9309L4
• Mark: Citroën
• Condition: Used
• OEM Part Number: 9309L4
• Substitutable numbers: 9309L4, 9309 L4
• Location on the vehicle: Rear, Left
• Part type: Window Seal
• Category: Window Seals, Gaskets & Trims

Purpose and vehicle placement

The presented seal is designed for installation in the rear left area of the body, on the perimeter of the passenger door. The design, tailored to the specific Citroën model, allows for proper adhesion to the door edge and frame, which promotes stable pressure along the entire length of the perimeter. Such placement is important both for protection against water and dust, and for reducing air turbulence around the door, which translates into more comfortable vehicle operation in daily use.

Function of the rear left door seal

The door seal in the Citroën C4 Grand Picasso performs several important operational functions:

• it creates a barrier that limits the ingress of water and moisture into the cabin interior,
• it supports acoustic insulation, reducing wind noise and external sounds,
• it stabilizes the door closure, improving the perceived rigidity and operation of the lock,
• it protects the sheet metal edges from direct contact and potential vibrations. Thanks to a properly selected seal, it is possible to reduce the risk of window fogging, upholstery dampness, and accelerated corrosion around the sills and lower door edges.

Product characteristics and fitment

The offered seal comes from dismantling and is a component intended for reinstallation in a vehicle of the same make and generation. Its original origin ensures compatibility of shape, cross-section, and mounting points with the factory solutions used in the Citroën C4 Grand Picasso. In practice, this means:

• the possibility of installation in place of a worn or damaged seal without the need for modifications,
• preservation of the factory adhesion line to the bodywork and window,
• a consistent visual appearance with other body sealing elements. Such fitment is particularly important in the case of rear doors, where leaks often manifest as increased noise, water ingress, or unpleasant drafts while driving.

Practical application of the used seal

Using a pre-owned sealing element is a cost-effective solution that also allows for maintaining the manufacturer's original specifications. Replacing a worn seal with a functional element of the same type can significantly improve travel comfort, especially on longer routes and at higher speeds. It is worth paying attention to:

• the condition of the seal's working surface before installation,
• proper positioning along the entire length of the door edge,
• thorough pressing in corner areas, where leaks most often occur. Careful installation allows you to fully utilize the sealing and acoustic properties offered by this element.

Technical support and additional information

If you are planning a comprehensive repair or upgrade of the door sealing area in your Citroën and need other elements from the same group, such as window seals, window moldings, or additional protective profiles, check the available parts in the Citroën window seals and moldings category. When selecting parts from dismantling, it is worth knowing the basic principles of assessing their technical condition and the cost-effectiveness of the purchase. Helpful tips on choosing used components can be found in the guide on our blog: the best used car parts – a guide to original components. If you are also interested in the topic of safely selecting used components from other vehicle systems, you can read an article discussing issues related to the fuel supply system: fuel dosing problems and purchasing a used injection pump and fuel rail.