Rear 1/4 glass seal. "Opening Window Type". Porsche 911  ❭  90154390

Restore a secure, weather-resistant seal around the opening rear quarter windows with these OE Match Rear 1/4 Glass Seals – Opening Window Type. Designed for compatible classic Porsche applications equipped with opening rear quarter glass, these seals fit around the quarter window assembly to help create an effective barrier between the glass and vehicle body.

• Porsche 911 1965-1968 2.0L / 912 SWB (F)
• Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera  

• Seals around the opening rear quarter window. 
• Helps prevent rainwater and moisture entering the cabin.
• Reduces unwanted wind entering around the glass.
• Helps minimise wind noise at speed.
• Provides a cushioned sealing surface between the glass and surrounding structure.
• Helps the opening quarter window sit securely when closed.
• Accommodates normal opening and closing of the quarter glass.
• Helps protect the surrounding interior from moisture.
• Replaces hardened, cracked, shrinking or damaged rubber seals.
• Restores a cleaner, original-style appearance around the quarter window.
• Is specifically intended for compatible opening rear quarter window applications.  

• Water entering around the rear quarter window.
• Dampness or water staining inside the vehicle.
• Increased wind noise around the quarter glass.
• Draughts entering the cabin at speed.
• Visible cracks or splits in the rubber.
• Hardened or brittle seal material.
• Rubber shrinking away from corners or edges.
• Flattened sections that no longer contact the glass correctly.
• The quarter window becoming difficult to seal when closed.
• Excessive movement or rattling from the glass.
• Deterioration or discolouration affecting the vehicle's appearance.
• Water collecting around the window aperture after rain or washing.  

• A rear quarter window seal must remain flexible enough to conform to the glass and surrounding aperture whenever the window is closed. As the rubber ages and hardens, it becomes less capable of maintaining consistent contact, allowing gaps to develop.
• Water entering through these gaps can damage interior trim, upholstery and surrounding materials. Persistent moisture may also encourage corrosion in concealed bodywork around the window aperture, potentially creating a significantly more involved restoration problem.
• A poor seal can also increase wind noise and draughts, making the cabin less comfortable at speed. On an opening quarter window, deterioration may prevent the glass from seating evenly when latched, potentially contributing to rattles and additional stress on the window hardware.
• For a classic Porsche restoration, fresh window seals also make an important cosmetic difference. Old, cracked or shrunken rubber can detract from otherwise well-restored glass, trim and bodywork.