Inner Door Seal, Front. Porsche 356 A / 356 B / 356 C 1955-65 › 64453190300

Inner Door Seal, Front.
The Genuine Porsche Inner Door Seal, Front (Part Number: 64453190300) is an original equipment body sealing component designed for selected Porsche 356A, 356B and 356C models.
Sold Each.
x2 Required Per Car.

Fits:

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

The seal is designed to limit the entry of water, wind, dust and road debris into the vehicle's interior while maintaining the original door sealing arrangement.

Unlike a complete door aperture weatherstrip, this component seals a specific section of the door assembly. It is traditionally bonded to the door using an appropriate adhesive.

The Porsche 356 features a classic body and door construction that relies on correctly positioned rubber seals to protect the passenger compartment from the elements.

When the door is closed, the front inner door seal helps close the gap between the leading edge of the door and the adjacent bodywork.

A properly fitted seal also provides a degree of cushioning between the mating surfaces, helping reduce unwanted vibration and rattling.

Over time, original rubber seals can deteriorate because of age, exposure to sunlight, moisture, temperature fluctuations and repeated compression.

The rubber may become brittle, cracked, flattened or detached from the door, reducing its ability to provide an effective weather-resistant seal.

Deteriorated door seals may contribute to increased wind noise, water entering the cabin, damp interior trim and moisture accumulation around the door opening.

Replacing a damaged or perished front inner door seal with a Genuine Porsche component helps restore the original sealing arrangement, improve weather protection and preserve the classic vehicle's interior condition.

Ideal for door refurbishment, bodywork repairs and Porsche 356 restoration projects, this Genuine Porsche Inner Door Seal provides an original equipment replacement for compatible applications.

What This Product Does:
The front inner door seal forms part of the Porsche 356 body weatherproofing system.

Its primary function is to provide a flexible seal between the front edge of the door and the adjacent bodywork when the door is closed.

As the door closes, the rubber seal contacts the corresponding body surface and compresses to help close the gap.

This reduces the movement of water, air and road contamination through the door opening.

Its main functions include:

• Sealing the front edge of the door: Helps close the gap between the door and adjacent bodywork.
• Reducing water ingress: Helps prevent rainwater and road spray from entering through the door opening.
• Limiting wind intrusion: Reduces airflow through gaps around the leading edge of the door.
• Reducing wind noise: Helps minimise whistling and rushing-air sounds caused by inadequate door sealing.
• Preventing dust entry: Reduces the amount of dirt and road debris entering the passenger compartment.
• Cushioning the door connection: Provides a flexible contact surface between the door and body.
• Reducing vibration and rattling: Helps minimise unwanted movement-related noises at the sealing interface.
• Protecting interior trim: Helps reduce moisture exposure around the footwell, carpets and adjacent trim.
• Supporting bodywork preservation: Reduces prolonged moisture exposure that may contribute to corrosion.
• Maintaining original door weatherproofing: Restores the factory-style sealing arrangement.

The inner door seal does not adjust the door hinges, latch or mechanical alignment.

It should work alongside correctly adjusted door hardware and the remaining door seals.

Symptoms Of Wear Or Failure:
Door seals are exposed to repeated compression, changing temperatures, moisture and environmental contamination.

On classic Porsche 356 vehicles, ageing rubber and deteriorated adhesive can compromise the original seal.

Common signs of a worn or damaged front inner door seal include:

• Water entering the cabin: Rainwater or road spray may pass through gaps around the door.
• Increased wind noise: A defective seal may allow rushing-air or whistling sounds during driving.
• Cracked rubber: Ageing may cause visible splits or cracks.
• Hardened seal material: Rubber may lose its original flexibility and sealing ability.
• Flattened seal profile: Repeated compression may permanently deform the rubber.
• Shrunken seal: Ageing material may pull away from the intended sealing surfaces.
• Loose or detached sections: Deteriorated adhesive may allow the seal to separate from the door.
• Torn rubber: Mechanical damage can create gaps within the sealing surface.
• Damp carpets or interior trim: Moisture entering through the door opening may affect the interior.
• Visible gaps around the door: Missing or deteriorated sealing material may leave sections inadequately sealed.
• Dust accumulation inside the cabin: Road dust may enter through poorly sealed door openings.
• Door rattling: Loss of sealing contact may contribute to vibration or movement-related noise.
• Uneven sealing contact: Distorted or incorrectly fitted rubber may not contact the body consistently.
• Visible perishing: The rubber may develop a rough, dry or deteriorated surface.
• Seal detachment during door opening: A poorly bonded seal may lift away from the door.
• Corrosion around the door opening: Repeated moisture exposure may contribute to deterioration of surrounding metalwork.

A worn seal may no longer compress correctly against the body, allowing water, air and road contamination to pass through the door opening.

Prolonged moisture exposure can damage carpets, interior trim and painted metal surfaces.

On a classic vehicle, preventing water ingress is especially important because hidden corrosion can develop around door apertures, sills and lower bodywork.

Installing a Genuine Porsche replacement Inner Door Seal helps to:

• Restore effective door sealing: Renew the protective barrier along the front edge of the door.
• Reduce water ingress: Help prevent rainwater entering through the affected sealing area.
• Improve cabin comfort: Reduce draughts and wind noise associated with a damaged seal.
• Protect interior trim: Limit moisture exposure to carpets, upholstery and adjacent components.
• Reduce corrosion risk: Help protect vulnerable bodywork from repeated water exposure.
• Replace aged rubber: Renew hardened, cracked or flattened sealing material.
• Maintain correct seal compression: Restore the intended contact between the door and body.
• Reduce unwanted rattling: Reinstate the flexible sealing contact where deterioration has caused noise.
• Maintain original door appearance: Replace missing or incorrectly fitted rubber with the proper component.
• Support body restoration: Complete door repairs and repainting with the specified sealing components.
• Preserve original Porsche construction: Maintain the factory-style front door sealing arrangement.
• Support long-term reliability: Replace deteriorated weatherstripping before further damage occurs.
• Maintain Genuine Porsche quality: Use the corresponding original equipment component.

Replacement is particularly recommended when the rubber is visibly cracked, torn, hardened, excessively compressed or no longer securely bonded to the door.

If the original seal has deteriorated on one side, inspecting the opposite door seal is advisable because both may have experienced similar ageing.