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Seat Belts - REAR

DISPLAYING 1 to 6 (of 6 products)
Special Order item
99180303
Product Information
Product Information
Seat Belts REAR.

porsche

Fits:
Porsche 991 2012>> CABRIO / TARGA

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Related, superseded, cross reference or alternative numbers for comparison.

99180303
99180303506A23
99180303502A23
99180303604A23
99180303602A23
991803035061S1
991803035021S1
991803036041S1
991803036021S1
9918030350662S
9918030350262S
9918030360462S
9918030360262S
991803035062L0
991803035022L0
991803036042L0
991803036022L0
99180303506U01
99180303502U01
99180303604U01
99180303602U01
99180303506N13
99180303502N13
99180303604N13
99180303602N13
99180303506OG4
99180303604OG4
99180303506OH6
99180303604OH6

The product you are viewing cross references to these numbers
Special Order item
9918030350
Product Information
Product Information
Seat belts REAR.
2 per car, price is for each seat belt.

porsche

Fits:
Porsche 991 2012>> COUPE

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Related, superseded, cross reference or alternative numbers for comparison.

9918030350
99180303505A23
9918030350562S
991803035051S1
991803035052L0
99180303505U01
99180303500N13
99180303500A23
9918030350062S
991803035001S1
991803035002L0
99180303500U01
99180303505OG4
99180303505OH6

The product you are viewing cross references to these numbers
Special Order item
99180318
Product Information
Product Information
Rear seat belt buckle.

porsche

Fits:
Porsche 991.1 2012-16
Porsche 991.2 2016-18
Porsche 991 Turbo 2012-18

Click 'Zoom in' for large parts diagram.
Diagram ref no 6

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Related, superseded, cross reference or alternative numbers for comparison.

99180318
99180318500
99180318600

The product you are viewing cross references to these numbers
Special Order item
99180303505A23::1
Product Information
Product Information
Rear three-point seat belt.

porsche

Fits:
Porsche 991 Carrera >>2015 Coupe
F >> 99-FS100 799
F >> 99-FS111 220

Click 'Zoom in' for large parts diagram.
Diagram ref no 1

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Related, superseded, cross reference or alternative numbers for comparison.

99180303505A23
99180303505
99180303505N13
99180303505A23
991803035051S1
991803035052L0
9918030350562S
99180303505U01
99180303505N13
99180303505OG4
99180303505OH6

The product you are viewing cross references to these numbers
Special Order item
477857739B70B
Product Information
Product Information
Seat belt buckle REAR. Fits Left or Right side.

porsche

Fits:
Porsche 911 1980-89
Porsche 964 1989-94
Porsche 993 1994-98
Porsche 968 1992-95
Porsche 924 1978-85
Porsche 924S 1986-88
Porsche 944 1982-91

This product supersedes Porsche's old part numbers:
- 477857739A
- 477857739B

Click 'Zoom in' for large parts diagram.
Diagram ref no 5

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

477857739B70B
477857739B70B
477857739B
477857739A

The product you are viewing cross references to these numbers
Special Order item
99180303504N13
Product Information
Product Information
Seat belt REAR coupe - Guards Red. 
Fits left or right 

porsche


Fits:
Porsche 991.1 - 2015 to 2016* (Coupe)
Porsche 991.2 - 2016 t0 2019 (Coupe)
Porsche 991 turbo - 2015 to 2019 (Coupe)

* From VIN
F 99-FS100 800>>
F 99-FS111 221>>

Click 'Zoom in' for large parts diagram.
Diagram ref no 1



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

99180303504N13
99180303504N13

The product you are viewing cross references to these numbers
DISPLAYING 1 to 6 (of 6 products)
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About Seat Belts - REAR

Porsche Rear Seat Belts | Design911 Safety Belts & Harnesses for Passenger Protection

Rear seat belts are a vital safety feature, designed to protect passengers and maintain Porsche’s commitment to performance and security. These precision-engineered restraint systems ensure that rear occupants are safely secured in every driving condition — from daily driving to long-distance touring. Whether you’re restoring a classic 911 or maintaining a modern Porsche, reliable rear seat belts provide essential peace of mind and safety for all passengers.

At Design911, we supply a wide range of rear seat belts, buckles, retractors, and mounting kits, developed for precise fitment and lasting performance. Each component is manufactured from durable webbing and corrosion-resistant hardware to meet the demands of road and track environments. Perfect for restoration projects, safety upgrades, or replacements, our products ensure Porsche-standard quality, function, and appearance.

What Do Rear Seat Belts Do?

Rear seat belts provide safety, comfort, and legal compliance, ensuring that passengers are properly restrained during travel.

Core Functions:
• Protect passengers in the event of sudden braking or collisions.
• Distribute impact forces evenly across the upper and lower body.
• Maintain correct passenger seating position for maximum safety.
• Reduce cabin movement and enhance occupant comfort.
• Support compatibility with child seat anchoring systems (ISOFIX in modern models).

A properly functioning seat belt system is critical not only for safety but also for maintaining the integrity and comfort of your Porsche’s cabin.

Why Do Rear Seat Belts Fail or Degrade?

Even though rear seat belts are used less frequently than front belts, they can still deteriorate due to environmental exposure, age, and mechanical fatigue.

Common Causes of Failure Include:
• Webbing fray, fading, or weakening from UV exposure.
• Sticking retractors or locking mechanism failure.
• Corrosion on mounting bolts and anchors.
• Contamination from dirt, oils, or cleaning chemicals.
• Previous accident stress weakening the belt’s strength.

Worn or damaged rear seat belts compromise both passenger safety and vehicle compliance — making replacement essential for proper protection.

Why Replace or Upgrade Your Porsche Rear Seat Belts?

Replacing rear seat belts ensures the highest level of passenger safety and restores the interior’s functionality and appearance. Upgraded designs also provide modern materials, smoother operation, and compatibility with Porsche interiors old and new.

Key Benefits:
• Restores passenger safety and comfort.
• Ensures compliance with safety regulations and MOT standards.
• Eliminates retraction issues and mechanical sticking.
• Available in standard 3-point and classic lap belt designs.
• Fits Porsche 911, 944, 968, Boxster, Cayman, and 718 models.
• Ideal for restorations, safety upgrades, or seat conversions.

Design911’s Porsche rear seat belt range combines safety engineering, durability, and authentic Porsche fitment — ensuring complete protection and performance.

Highlights

• Premium Porsche rear seat belts, harnesses, and hardware.
• Engineered for strength, comfort, and precision fit.
• UV- and abrasion-resistant webbing for long service life.
• Easy to install and compatible with original mounting points.
• Available in various colours and lengths to suit all models.
• Perfect for restoration, maintenance, and safety upgrades.

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