This part number supersedes to PCG54290126 Genuine Porsche part 64454290126

Front 1/4 Window Seal.
The OE Match Front Quarter Window Seal is a premium-quality replacement weather seal designed to provide a secure, weatherproof seal around the front quarter window on compatible classic Porsche models. Manufactured to OE specifications for fit, profile and durability, these seals restore the original fitment of the fixed quarter glass while protecting the cabin from water, wind and road contaminants.

Fits:

• Porsche 356 1950-55
• Porsche 356A 1955-59
• Porsche 356B 1959-63
• Porsche 356C 1963-65

  
Diagram Ref No 18

Manufactured from high-quality automotive-grade EPDM rubber, the seals are resistant to UV exposure, ozone, moisture and extreme temperature fluctuations. Precision-moulded to match the original factory profile, they ensure excellent flexibility, consistent sealing performance and straightforward installation, making them ideal for vehicle restorations or replacing aged, cracked or deteriorated original seals.  

What This Product Does:

• Creates a weatherproof seal around the front quarter window.
• Prevents water ingress into the cabin.
• Reduces wind noise around the fixed side window.
• Helps prevent dust and road debris from entering the vehicle.
• Cushions the glass to reduce vibration and movement.
• Protects the window aperture against moisture-related corrosion.
• Restores the original appearance and fitment of the quarter window.
• Forms an essential part of the vehicle's body sealing system.

Symptoms Of Wear Or Failure:

• Water leaks around the quarter window.
• Increased wind noise while driving.
• Cracked, split or hardened rubber.
• Shrinking or separation of the seal from the body.
• Visible gaps around the window.
• Moisture entering the cabin.
• Damp interior trim near the window.
• Whistling noises at higher speeds.
• Perished rubber caused by UV exposure.
• Corrosion developing around the window frame.

Why Replacement Matters:

• Quarter window seals are continuously exposed to sunlight, rain, road salt and temperature fluctuations. Over time, the rubber loses flexibility, becoming hard, cracked or shrunken, which reduces its ability to maintain a watertight seal around the glass.
• A deteriorated seal can allow water, dirt and wind to enter the vehicle, leading to increased cabin noise, interior water damage and corrosion around the window aperture. Poor sealing can also affect the appearance of the vehicle and reduce the quality of a restoration.
• Replacing worn quarter window seals restores the weatherproof integrity of the body, improves cabin refinement and helps preserve both the glass and surrounding bodywork. The OE Match replacement provides factory-style fitment, premium EPDM rubber construction and long-lasting durability, helping maintain the originality, comfort and value of your classic Porsche.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

64454293

The product you are viewing cross references to these numbers

Front 1/4 window seal.
Rubber seal for vent window on Cabriolet models with Karmann Hardtop
Rubber sealing profile / gasket designed to fit around the vent (side) window of early-generation Porsche models. The profile forms a continuous seal between the vent glass and the car body/frame - preventing water, dust, wind and unwanted air from entering the cabin or interior spaces.

Fits:
Porsche 356 Cabrio 1.1L-2.0L 08/1952-12/1965

Diagram Ref no 21

This vent-window seal:
•  Creates a weather-proof barrier around the vent/side window, preventing water ingress, dust, and external debris.
•  Maintains a tight, durable seal that reduces wind-noise and vibrations when driving.
•  Protects interior trim and avoids leaks that could lead to moisture damage or rust - especially common in classic Porsches.
•  Restores original sealing performance when the old gasket has become hardened, cracked, or lost elasticity due to age and exposure.

Why replacement matters:
• Old seals often harden, crack or degrade over decades - causing leaks, drafts, noise, dust ingress, or water seepage into the cabin.
• A degraded seal cannot guarantee proper weatherproofing, which may lead to interior moisture damage, rust or trim deterioration.
• Replacing with a correct-spec sealing profile ensures the original cabin comfort, reduces wind-noise or rattling, and preserves the vehicle’s structural and cosmetic integrity.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

64454293

The product you are viewing cross references to these numbers

Front 1/4 Glass Vertical Seal.
The OE Match Front 1/4 Glass Vertical Seal is a premium-quality replacement weather seal designed to provide a secure seal between the front quarter (1/4) glass and the surrounding door frame on compatible classic Porsche models. Manufactured to OE specifications for fit, profile and durability, this vertical seal helps prevent the ingress of water, wind and dust while maintaining the original appearance and fitment of the vehicle's window assembly.  

Fits:

• Porsche 356 1950-55
• Porsche 356A 1955-59
• Porsche 356B 1959-63
• Porsche 356C 1963-65  

Diagram Ref No 3

Manufactured from high-quality EPDM rubber, the seal is engineered to resist UV exposure, ozone, moisture and extreme temperature changes without cracking, shrinking or losing flexibility. Precision-moulded to match the original factory profile, it provides direct OE-style installation and ensures the correct positioning of the front quarter glass while helping to minimise wind noise and vibration.  

What This Product Does:

• Seals the front quarter (1/4) glass against the door frame.
• Prevents water, dust and dirt from entering the cabin.
• Reduces wind noise around the window.
• Helps support correct positioning of the quarter glass.
• Protects the interior from moisture ingress.
• Maintains the original appearance of the window assembly.
• Provides factory-style fitment and sealing performance.
• Forms an essential part of the vehicle's door and window sealing system.

Symptoms Of Wear Or Failure:

• Water leaks into the cabin.
• Increased wind noise while driving.
• Cracked, hardened or split rubber.
• Shrinking or distortion of the seal.
• Visible gaps around the quarter glass.
• Rattling or movement of the glass.
• Moisture entering the door cavity.
• Perished or flattened sealing surface.
• Interior dampness following rain or washing.
• Reduced appearance due to aged weather seals.

Why Replacement Matters:

• The front quarter glass seal is continually exposed to sunlight, rain, temperature fluctuations and repeated opening and closing of the door. Over time, the rubber can harden, crack or shrink, reducing its ability to maintain an effective seal around the glass.
• A deteriorated seal can allow water and dust to enter the cabin and door cavity, increasing the risk of corrosion, interior damage and unwanted wind noise. It may also reduce the stability of the quarter glass and detract from the appearance of a restored or well-maintained classic Porsche.
• Replacing a worn or damaged seal restores the original weather protection, reduces cabin noise and maintains the correct fit of the quarter glass. The OE Match Front 1/4 Glass Vertical Seal is manufactured to OE standards using premium-quality EPDM rubber, providing factory-style fitment, excellent weather resistance and long-lasting durability, making it the ideal choice for Porsche restoration, repair and preventative maintenance.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

64454293302

The product you are viewing cross references to these numbers

Front 1/4 Window Seal. Rubber seal for vent window on Cabriolet models with Karmann Hardtop

Fits:
Porsche 356 Cabrio 1.1L-2.0L 08/1952-12/1965

Click 'Zoom in' for large parts diagram
Diagram Ref no 21

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

64454293

The product you are viewing cross references to these numbers

Upper and rear door window seal.

Fits:
Porsche 356B T5 1960 - 1600 SUPER 90 (616/7 T5)

Click 'Zoom in' for large parts diagram.
Upper and rear section no 29 and 30 in diagram.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

64454290200

The product you are viewing cross references to these numbers

Upper And Rear Door Window Seal.

The OE MATCH Upper And Rear Door Window Seal is an OE-style replacement window sealing and guide component designed for Porsche 356B T5 models. This seal fits within the upper and rear sections of the door window frame, helping maintain correct glass positioning while providing protection against moisture, wind, dust and unwanted vibration.

Fits:

• Porsche 356B T5 1960 - 1600 SUPER 90 (616/7 T5)

Diagram Ref No 29 And 30

Designed to replace worn, hardened, damaged or deteriorated original window seals, this component helps restore smooth window operation and a secure fit within the door frame.

Ideal for classic Porsche maintenance, door window repairs and restoration projects, the OE MATCH Upper And Rear Door Window Seal helps preserve the original appearance and functionality of the vehicle's window assembly.

What This Product Does:
The upper and rear door window seal acts as a protective guide and sealing channel for the door glass. It supports the window along the upper and rear sections of the frame, helping the glass remain correctly positioned while reducing movement, vibration and exposure to outside elements.

Its key functions include:

• Window Glass Support: Helps guide and support the door glass within the upper and rear sections of the window frame.
• Weather Protection: Helps reduce water and moisture entering through gaps around the door window.
• Wind Noise Reduction: Minimises draughts, whistling and unwanted wind noise caused by poorly fitting window seals.
• Smooth Window Operation: Provides a protective contact surface to help the window glass move correctly within its frame.
• Vibration Reduction: Helps prevent excessive glass movement, rattling and vibration while driving.
• Dust and Dirt Protection: Reduces the entry of road dust, dirt and other environmental contaminants.
• Glass Protection: Helps prevent direct contact between the window glass and surrounding metal frame components.
• Original Appearance: Maintains the factory-style arrangement of the classic Porsche 356 door window assembly.

Symptoms Of Wear Or Failure:
Over time, exposure to sunlight, moisture, temperature changes and repeated window operation can cause the original door window seals and guide channels to deteriorate.

Common signs include:

• Cracked or Deteriorated Seal: Visible cracking, splitting or general deterioration of the original sealing material.
• Hardened or Brittle Material: Ageing seals may lose flexibility and become less effective at cushioning and supporting the window glass.
• Increased Wind Noise: Whistling, draughts or excessive wind noise around the door window may indicate worn or poorly fitting seals.
• Water Leaks Around the Window: Rainwater or moisture entering around the door glass can indicate deterioration of the sealing system.
• Rattling or Loose Window Glass: A worn guide channel may allow excessive glass movement, particularly when driving over uneven surfaces.
• Difficulty Raising or Lowering the Window: Damaged, distorted or displaced window guides can create resistance during window operation.
• Visible Gaps Around the Glass: Shrinking, wear or incorrect positioning may leave gaps between the window and its surrounding frame.
• Damaged or Worn Guide Surface: Deterioration of the channel's contact surface can affect glass movement and stability.
• Window Misalignment: Excessive wear may allow the glass to sit incorrectly within the door frame.
• Damp Interior Trim: Water entering around deteriorated window seals can lead to moisture accumulation around the door panel and interior.

Why Replacement Matters:

• Replacing a worn or damaged upper and rear door window seal is an important part of maintaining the comfort, functionality and original condition of your classic Porsche 356.
• As window seals and guide channels age, they gradually lose their ability to support and protect the glass effectively. This can result in rattling, increased wind noise, water ingress and difficulty operating the window.
• A correctly fitted replacement seal helps restore proper window glass guidance and positioning, allowing the glass to move more smoothly while reducing unwanted vibration and contact with surrounding metal components.
• Maintaining effective window sealing is also important for protecting the vehicle's interior. Moisture entering through deteriorated seals can damage door cards, upholstery and internal door components, while prolonged water exposure may contribute to corrosion.
• Replacing deteriorated window seals during restoration or preventative maintenance can help prevent further damage to the window mechanism and surrounding components.
• For Porsche 356 owners, preserving the original window arrangement is essential to maintaining both the driving experience and the authenticity of the vehicle.
• The OE MATCH Upper And Rear Door Window Seal offers a practical OE-style replacement solution, helping restore reliable window operation, effective sealing and the original appearance of the door window assembly.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

64454290200

The product you are viewing cross references to these numbers

Flexible Window Channel.

The OE MATCH Flexible Window Channel is a replacement door window guide channel designed for Porsche 356 A, 356 B and 356 C models manufactured between 1955 and 1965.
One required per door.
For Coupe, Cabriolet and Karmann Hardtop models.

Fits:

• Porsche 356 A
• Porsche 356 B-T5
• Porsche 356 B-T6
• Porsche 356 C

Diagram Ref No 23

Designed to provide an OE-style fit and dependable functionality, this flexible window channel helps guide and support the door window glass as it is raised and lowered, ensuring smooth operation and correct positioning within the window frame.

Also known as a window guide channel or glass runner channel, this component forms part of the door window assembly. It provides a protective guiding surface between the window glass and surrounding frame, helping reduce friction, vibration and unwanted movement.

Over time, original window channels can deteriorate due to ageing, repeated window operation, moisture exposure and general wear. Worn or damaged channels may cause the glass to rattle, become misaligned or move unevenly during operation.

The OE MATCH Flexible Window Channel provides a practical replacement solution for restoring correct window guidance and helping maintain the original functionality of the Porsche 356 door window assembly.

Suitable for Coupe, Cabriolet and Karmann Hardtop models, this component is ideal for routine window repairs, door refurbishment and classic Porsche restoration projects.

What This Product Does:
The flexible window channel provides a guiding and protective surface for the door window glass, helping it move smoothly within the window frame while maintaining correct alignment.

Its key functions include:

• Window Glass Guidance: Guides the door glass along its intended path as the window is raised or lowered.
• Smooth Window Operation: Provides a suitable contact surface that helps reduce friction and resistance during window movement.
• Window Alignment: Helps maintain correct glass positioning within the surrounding window frame.
• Glass Protection: Provides a protective interface between the glass and metal window frame, reducing the risk of scratches and damage.
• Vibration Reduction: Helps minimise excessive glass movement, rattling and vibration while driving.
• Window Stability: Supports the glass within the frame, helping prevent unwanted sideways movement.
• Reduced Operating Noise: A correctly fitted channel helps reduce squeaking, scraping and rattling during window operation.
• Improved Window Closure: Helps the glass reach its intended closed position within the surrounding window assembly.
• Weather Sealing Support: Correct glass guidance and alignment help maintain contact with the associated window seals, reducing potential draughts and water ingress.
• OE-Style Functionality: Helps restore the original door window arrangement without requiring unnecessary modifications.

Symptoms Of Wear Or Failure:
Over time, repeated window operation, ageing, moisture and contamination can cause the original flexible window channel to deteriorate.

Common signs include:

• Difficulty Raising or Lowering the Window: A worn, distorted or displaced channel may create excessive friction, making the window difficult to operate.
• Rattling Window Glass: Deterioration of the guiding surface can allow excessive glass movement, causing rattling or vibration while driving.
• Stiff Window Operation: Hardened or damaged channel material may restrict smooth movement of the glass.
• Uneven Window Movement: A worn or incorrectly positioned channel may cause the glass to move at an angle or become misaligned.
• Visible Channel Deterioration: Fraying, cracking, splitting or separation of the channel material may indicate advanced wear.
• Loose or Displaced Window Channel: The channel may become detached from its mounting position, affecting glass guidance and support.
• Squeaking or Scraping Noises: A damaged or contaminated channel may cause unwanted noise when the window is raised or lowered.
• Excessive Window Glass Movement: Worn guiding material can allow sideways movement or instability within the frame.
• Window Glass Scratches: Loss of the protective channel surface may allow contact with hard or contaminated surrounding components.
• Poor Window Alignment: The glass may no longer sit correctly against the surrounding weather seals.
• Increased Wind Noise: Incorrect glass positioning may create gaps that allow air to enter the cabin.
• Water Leaks Around the Window: Poor alignment or deteriorated sealing contact may contribute to moisture entering around the door glass.
• Increased Resistance at the Window Winder: A damaged channel can place additional load on the manual window regulator mechanism.

Why Replacement Matters:

• Replacing a worn or damaged flexible window channel is an important part of maintaining the functionality, comfort and original condition of your classic Porsche 356.
• The door window glass relies on correctly fitted guiding channels to remain stable and move smoothly within its frame. As the original channel deteriorates, it can lose its ability to support the glass effectively, resulting in increased friction, unwanted movement and poor window alignment.
• A correctly fitted replacement channel helps restore smooth window operation, allowing the glass to travel along its intended path without excessive resistance.
• Maintaining proper glass alignment is also important for protecting the surrounding window regulator and associated components. When the glass becomes difficult to move or binds within the frame, additional force may be required to operate the window, placing unnecessary strain on the winding mechanism.
• Continued operation with a damaged channel may accelerate wear on the window regulator, glass guides and surrounding fittings.
• Replacing the deteriorated channel also helps reduce unwanted rattling and vibration, improving cabin comfort during normal driving.
• Correct window positioning contributes to effective sealing against the surrounding rubber weatherstrips. A loose or misaligned window can create gaps that allow wind, dust and moisture to enter the cabin.
• For classic Porsche owners, moisture ingress can be particularly concerning, as prolonged exposure may damage door cards, upholstery and internal door components while contributing to corrosion.
• The flexible window channel also protects the edges and surfaces of the door glass from excessive contact with surrounding metal components.
• During Porsche 356 restoration projects, replacing aged window channels provides an opportunity to restore the original window operation and ensure that refurbished glass, regulators and frame components work together correctly.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

PCG54290126

The product you are viewing cross references to these numbers

Flexible rubber window channel.
Two required per door for 356A Coupes without vent window. One required per door for 356A, 356B, 356C Coupes & Cabriolets with vent windows.

Fits:
Porsche 356A / 356B / 356C

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

64454290100

The product you are viewing cross references to these numbers

Front 1/4 window seal.
Rubber seal for vent window on Coupe models.

Fits:
Porsche 356 Carrera / Coupe 08/1950-12/1965

Click 'Zoom in' for large parts diagram
Diagram ref no 18

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

64454293

The product you are viewing cross references to these numbers