Headlamp seal glass to housing. Porsche 911 / 964  ❭  91163196700

Headlamp Lens Seal 
Sold each - 2 required per car

Restore the weatherproof integrity and performance of your Porsche headlights with this OE Match Headlamp Lens Seal. Designed for Porsche 911 and 964 models, this seal fits between the headlamp glass lens and the headlamp housing, creating a watertight barrier that protects the internal reflector and lighting components from moisture, dirt and contamination.

Fits:

• 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
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 911 1975-1977 3.0L Turbo (930)
• Porsche 911 1978-1989 3.3L Turbo (930)
• Porsche 964 (911) C2 1989-93
• Porsche 964 (911) C4 1989-93
• Porsche 964 (911) RS 3.6L 1991-93
• Porsche 964 (911) RS 3.8L 1991-93
• Porsche 964 (911) TURBO 3.3L 1991-93
• Porsche 964 (911) TURBO 3.6L 1991-93

A properly functioning headlamp seal is essential for maintaining headlight performance and preserving the condition of expensive headlamp assemblies. Over time, the original seal can harden, shrink, crack or lose its sealing effectiveness, allowing moisture to enter the housing and potentially damage internal components.

Manufactured to OE Match standards, this replacement seal restores the correct fit and protection originally intended by Porsche.

What Does the Headlamp Lens Seal Do?

The headlamp lens seal sits between the glass lens and headlamp housing.

Its primary functions include:

• Preventing water ingress
• Protecting internal headlamp components
• Reducing condensation inside the headlight
• Helping preserve reflector condition
• Preventing dirt and debris contamination
• Maintaining lighting performance
• Supporting long-term headlamp durability

This simple component plays a crucial role in protecting the entire headlamp assembly.

Why Do Headlamp Lens Seals Fail?

Headlamp seals are constantly exposed to environmental conditions.

Common causes of failure include:

• Age-related rubber deterioration
• UV exposure
• Heat cycling
• Moisture exposure
• Hardening and shrinkage
• Damage during headlamp servicing
• Long-term environmental wear
• Previous incorrect installation

As the seal deteriorates, its ability to keep moisture out of the headlamp housing is reduced.

Symptoms of a Failing Headlamp Seal

Common warning signs include:

• Condensation inside the headlamp lens
• Water droplets inside the housing
• Fogging of the glass lens
• Dirt contamination within the headlamp
• Visible cracking or deterioration of the seal
• Corrosion developing on internal components
• Reduced headlight performance
• Moisture-related reflector damage

These symptoms often indicate that the seal has lost its effectiveness and should be replaced.

When Should the Seal Be Replaced?

Replacement is recommended when:

• Condensation is visible inside the headlamp
• Water ingress has occurred
• The headlamp is being restored
• The lens is being removed for refurbishment
• The original seal shows signs of ageing
• Internal reflector work is being carried out
• Completing a restoration project
• Performing preventative maintenance

Many Porsche restorers replace these seals whenever headlamp assemblies are disassembled.

Why Replacement Matters

A damaged seal can allow moisture to compromise the entire headlamp assembly.

Benefits of replacement include:

• Improved weather protection
• Reduced condensation
• Better lighting performance
• Protection of reflectors and bulbs
• Enhanced reliability Improved appearance
• Preservation of valuable headlamp components
• Restoration of factory sealing standards

Replacing the seal is a cost-effective way to protect an expensive headlamp assembly.