3rd Brake Lights
Fits:
Porsche 996 1998-2005
Porsche 996 GT3
Porsche 996 Turbo
Porsche 996 GT2
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Diagram ref no 17
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99663116500
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
Replacement for the standard rear red brake light strip.
Fits:
- Porsche Carrera 996
- Porsche 996 GT3 MK1
- all RHD and LHD cars
About installation:
Our 3rd Brake LED Lights install just like the factory ones do , there might be a slight modification needed to make it work in some cases only that all depends on the year the car was manufactured, you may have to reverse polarity on the connector of the 3rd brake light, no cutting or welding a simple swap of the wiring, details are available on the installation instructions.
If your car has cruise control (M454 option), you may need to install in line resistor (50W 6RJ) - this resistor is not included but widely available.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99663100099
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
Replacement for the standard rear red brake light strip.
Fits:
- Porsche Carrera 996
- Porsche 996 GT3 MK1
- all RHD and LHD cars
About installation:
Our 3rd Brake LED Lights install just like the factory ones do , there might be a slight modification needed to make it work in some cases only that all depends on the year the car was manufactured, you may have to reverse polarity on the connector of the 3rd brake light, no cutting or welding a simple swap of the wiring, details are available on the installation instructions.
If your car has cruise control (M454 option), you may need to install in line resistor (50W 6RJ) - this resistor is not included but widely available.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99663100097
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
Upgrade the rear styling and visibility of your Porsche 996 with this high-quality LED 3rd brake light in a smoked finish. Designed as a direct replacement for the original unit, this modern LED light offers faster illumination for improved safety and a sleek, contemporary look that complements the 996’s rear design. Manufactured to OEM standards, it fits perfectly without any modification and connects using the factory wiring for a simple plug-and-play installation. The smoked lens gives a subtle, sporty appearance while maintaining full brightness when braking.
Fits:
- Porsche Carrera 996
- Porsche 996 GT3 MK1
- all RHD and LHD cars
About installation:
Our 3rd Brake LED Lights install just like the factory ones do , there might be a slight modification needed to make it work in some cases only that all depends on the year the car was manufactured, you may have to reverse polarity on the connector of the 3rd brake light, no cutting or welding a simple swap of the wiring, details are available on the installation instructions.
If your car has cruise control (M454 option), you may need to install in line resistor (50W 6RJ) - this resistor is not included but widely available.
- Suitable for Porsche 996 (Carrera, Targa, Turbo, GT3) models
- Direct replacement for the factory 3rd brake light
- Smoked lens for a stylish, discreet look
- LED technology for faster response and longer life
- Plug-and-play fitment — no coding or adapters required
- Enhances both safety and aesthetics
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99663100098
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
Please note: This part does not come with one end cap finisher. Has to be purchased separately use product code 99663116500
Fits:
Porsche 996 1998-2005 (excl Turbo and GT2)
Porsche 996 GT3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99663105006
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
Please note: This part does not come with one end cap finisher. Has to be purchased separately. Part number 99663116500
Fits:
Porsche 996 Turbo
Porsche 996 GT2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99663105007
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05

Fits:
Porsche 996 Turbo
Porsche 996 GT2
Replace your shot gasket with new one without need to replace the complete light. This gasket is not available from Porsche and if your light is in good condition (but gasket isn't) you can now replace it in 5 mins without using special tools. Easy slip-on installation. Instructions available.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99663105007G
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
Porsche Third Brake Lights | Safety, Visibility & Authentic Design
Third brake lights, also known as high-mounted stop lamps, are an essential safety feature in every Porsche. Positioned higher than the standard tail lights, they increase visibility to drivers behind you, especially under heavy braking or poor weather conditions. Over time, these lights can fade, crack, or fail — making timely replacement vital for maintaining safety and compliance.
At Design911, we supply premium-quality third brake lights and assemblies designed to deliver precise illumination, reliability, and a perfect fit. Our range includes LED upgrades, smoked lens options, and direct-fit replacements for classic and modern Porsche models. Each unit is built to meet performance standards for brightness, clarity, and durability, ensuring both style and safety on the road.
Whether you’re restoring an air-cooled 911 or upgrading a modern Cayman, our third brake lights combine safety, design precision, and genuine Porsche performance appeal.
What Do Third Brake Lights Do?
Third brake lights enhance safety and communication between vehicles by providing an additional, elevated signal when braking.
Core Functions:
- Increase visibility during braking, especially at night or in fog.
- Reduce the risk of rear-end collisions.
- Provide redundancy if lower brake lights fail.
- Enhance the visual balance and styling of the vehicle’s rear design.
- Maintain compliance with road safety regulations.
In a Porsche, where design and performance meet precision engineering, third brake lights play a vital role in safety and aesthetics alike.
Why Do Third Brake Lights Fail or Degrade?
Even high-quality lighting components are exposed to heat, vibration, and environmental stress, leading to deterioration over time.
Common Causes of Failure Include:
- Burnt-out bulbs or failed LEDs.
- Cracked or faded lens covers from UV exposure.
- Water ingress leading to condensation or corrosion.
- Electrical connection faults or damaged wiring.
- Vibration-related damage from performance driving.
When a third brake light becomes dim, cracked, or non-functional, it compromises both safety and the car’s visual integrity — and can even result in MOT or inspection failure.
Why Replace or Upgrade Your Porsche Third Brake Light?
Replacing or upgrading your Porsche’s third brake light restores full braking visibility and adds a refined finish to your rear styling. LED and smoked-lens options also enhance modernity and performance appeal.
Key Benefits:
- Restores optimal visibility and safety.
- Prevents MOT or road safety test failures.
- Enhances appearance with clear, smoked, or LED options.
- Compatible with Porsche 911, Boxster, Cayman, Panamera, Macan, Cayenne and other models.
- Direct-fit design for quick, easy installation.
- Ideal for maintenance, restoration, or visual upgrades.
High-quality replacements from Design911 ensure your Porsche’s lighting system performs flawlessly and looks stunning.
Highlights
- Precision-engineered Porsche third brake light assemblies.
- Available in LED, clear, or smoked finishes.
- Designed for perfect fitment and maximum brightness.
- Long-lasting, weather-sealed construction.
- Enhances both safety and visual appeal.
- Ideal for Porsche restorations, maintenance, and upgrades.