NISSAN 82861-VD22B Rear Left Door Vapor Barrier

This genuine Nissan (OEM: 82861-VD22B) rear left vapor barrier (screen sealing) is a premium-quality original part essential for protecting the vehicle's passenger compartment. Located between the door trim panel and the inner sheet metal door structure, its primary function is to prevent moisture, humidity, dust, and wind drafts from entering the cabin.

Operating Principle and Importance

Rainwater that inevitably enters the door past the window seals drains through the inner door cavity and exits via the lower drainage holes. The vapor barrier prevents this moisture from seeping into the interior door card. Without a proper seal, the trim panel can become waterlogged, warped, and moldy, potentially causing corrosion to the door's electrical connectors, window regulator motors, and audio speakers. Additionally, the barrier contributes to acoustic insulation and interior temperature retention.

Technical Characteristics and Specifications

• Manufacturer: NISSAN (Genuine OEM part)
• Part Number: 82861-VD22B
• Fitting Position: Rear left door (inner side)
• Material: Durable, tear-resistant, and waterproof polyethylene (PE) film resistant to extreme temperature fluctuations
• Design: Precise factory pre-cut pattern with dedicated pass-throughs for wiring harnesses, door release cables, and mounting clips

Symptoms of a Damaged or Missing Vapor Barrier

• Water accumulation in the rear left footwell or on the inner door sill after rainfall or vehicle washing.
• Discoloration, dampness, or warping at the bottom edge of the interior door trim panel.
• Increased cabin window fogging and a damp, musty odor in the passenger compartment.
• Wind noise or fluttering/rattling sounds from the door area if the film has detached from the adhesive bead.

To ensure a watertight seal during installation, the use of OEM butyl tape or a dedicated automotive body sealant is recommended.