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Bonnet / Boot Seals
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Fits:
Porsche 356 / 356A 1950-1959
Porsche 356B / 356C 1960-1965
Click 'Zoom in' for large parts diagram.
Diagram ref no 18
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
64451190106
The product you are viewing cross references to these numbers
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
The OE Match Bonnet Seal (3750mm) is a premium-quality replacement weather seal designed to create an effective seal between the bonnet and body on compatible classic Porsche models. Manufactured to OE specifications for fit, profile and durability, this bonnet seal helps prevent the ingress of water, dust and road debris into the front luggage compartment and engine bay while ensuring the bonnet closes securely and maintains the correct factory fit.
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 seal offers outstanding resistance to UV exposure, ozone, moisture and extreme temperature variations. Supplied in a 3750mm length, it is precision-profiled to replicate the original factory design, providing excellent flexibility, long-lasting sealing performance and straightforward installation during restoration or maintenance.
What This Product Does:
- Creates a weatherproof seal between the bonnet and body.
- Prevents water, dust and road debris from entering protected areas.
- Helps protect the luggage compartment or engine bay from moisture.
- Reduces wind noise around the bonnet.
- Cushions the bonnet during closing to reduce vibration.
- Maintains correct bonnet alignment and fitment.
- Helps prevent moisture-related corrosion.
- Forms an essential part of the vehicle's body sealing system.
Symptoms Of Wear Or Failure:
- Water ingress into the luggage compartment or engine bay.
- Cracked, split or hardened rubber.
- Flattened or compressed seal profile.
- Increased wind noise while driving.
- Visible gaps between the bonnet and body.
- Loose or detached sections of the seal.
- Dirt and debris entering beneath the bonnet.
- Damp components or corrosion around the bonnet opening.
- Perished rubber caused by age or UV exposure.
- Bonnet vibration or rattling during driving.
Why Replacement Matters:
- The bonnet seal is continuously exposed to sunlight, rain, road salt, engine heat and repeated compression every time the bonnet is opened and closed. Over time, the rubber can harden, shrink or crack, reducing its ability to provide an effective weatherproof seal.
- A deteriorated bonnet seal can allow moisture and contaminants to enter the luggage compartment or engine bay, increasing the risk of corrosion, electrical issues and unnecessary wear of surrounding components. It may also contribute to wind noise, bonnet vibration and reduced refinement.
- Replacing a worn bonnet seal restores the weatherproof integrity of the bonnet assembly and helps protect the vehicle from environmental damage. The OE Match replacement provides factory-style fitment, premium EPDM rubber construction and excellent long-term durability, helping preserve the originality, reliability and value of your classic Porsche.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
64451190106
The product you are viewing cross references to these numbers
Perfect for sealing weatherstripping to door, hood, and trunk panels.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
00004330532
The product you are viewing cross references to these numbers
Porsche Bonnet & Boot Seals | Design911 Rubber Weather Seals for Body Protection & Longevity
Bonnet and boot seals are vital to preserving the integrity, comfort, and appearance of your Porsche. These precision-fitted rubber seals prevent water, dust, and wind from entering the luggage compartments, ensuring a clean, quiet, and protected environment. In both classic and modern Porsche models, maintaining proper sealing is essential for preventing corrosion, electrical damage, and interior deterioration.
At Design911, we supply a comprehensive range of bonnet and boot rubber seals, designed for an exact fit and long-lasting performance. Manufactured from premium-grade weather-resistant materials, our seals deliver exceptional flexibility, compression recovery, and durability. Whether for restoration, maintenance, or performance detailing, Design911’s sealing components provide professional-grade protection and finish for every Porsche.
What Do Bonnet & Boot Seals Do?
Bonnet and boot seals create a tight barrier between the body panels and the luggage compartments, shielding your Porsche’s structure and interior from external elements.
Core Functions:
• Prevent water, dirt, and air leaks into front and rear compartments.
• Reduce noise, vibration, and harshness (NVH) during driving.
• Protect paintwork and body edges from friction damage.
• Assist with proper panel alignment and secure closure.
• Maintain optimal pressure sealing for climate protection.
High-quality rubber seals are essential for keeping your Porsche dry, quiet, and free from unwanted wear — enhancing both comfort and longevity.
Why Do Bonnet & Boot Seals Fail or Degrade?
Rubber components naturally deteriorate over time due to environmental exposure, pressure cycles, and age-related hardening.
Common Causes of Failure Include:
• UV and ozone damage causing cracking and brittleness.
• Compression set from repeated opening and closing of panels.
• Contamination by oil, fuel, or cleaning chemicals.
• Deformation or tearing from misaligned panels or closures.
• Age-related loss of elasticity reducing sealing effectiveness.
Once seals begin to fail, moisture and dust can infiltrate compartments, leading to corrosion, noise, and costly repairs — making timely replacement crucial.
Why Replace or Upgrade Your Porsche Bonnet & Boot Seals?
Replacing your Porsche’s bonnet or boot seals restores the original comfort, protection, and aesthetic integrity of your car. Upgraded rubber compounds offer improved sealing and longevity over standard materials.
Key Benefits:
• Restores water- and air-tight sealing for front and rear compartments.
• Prevents corrosion, leaks, and unpleasant cabin odours.
• Reduces wind noise and vibration for a smoother drive.
• Precision-engineered for Porsche 911, Cayman, Boxster, Panamera, and 944
models.
• Constructed from high-quality EPDM or neoprene rubber for maximum resilience.
• Ideal for restoration, maintenance, and detailing applications.
Design911’s Porsche bonnet and boot rubber seals deliver the perfect balance of flexibility, compression strength, and durability — ensuring a secure seal that lasts for years.
Highlights
• Premium Porsche bonnet and boot compartment seals.
• Engineered for exact fitment and long-term elasticity.
• Resistant to UV, ozone, and temperature extremes.
• Improves noise isolation and weatherproofing.
• Suitable for both classic and modern Porsche models.
• Perfect for restorations, replacements, or detailing upgrades.
