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- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
Black Aluminium Door Threshold Side Sill Protectors
Protect your Porsche's interior while restoring the original factory appearance with these OE Match Black Aluminium Door Threshold Side Sill Protectors Manufactured to replicate the original factory specification, this complete kit includes both the left-hand and right-hand door threshold protectors, providing a factory-style appearance while protecting the painted door sills from everyday wear.
Fits:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
Diagram ref no 33
Finished in black anodised aluminium, these threshold trims
protect the painted door sills from scuffs, scratches and everyday wear while
adding a smart, factory-correct finishing touch to the cabin. Ideal for
restoration projects or replacing worn original trims, they help preserve both
the appearance and value of your classic Porsche.
Kit Contents
This complete OE Match kit includes:
- 1 × Left-hand black aluminium door threshold side sill protector.
- 1 × Right-hand black aluminium door threshold side sill protector.
A convenient and cost-effective way to replace both sill protectors together for a consistent factory-fresh appearance.
What Do the Door Threshold Side Sill Protectors Do?
Door threshold protectors are designed to shield one of the highest wear areas of the vehicle.
Their primary functions include:
- Protecting the painted door sill from scratches and scuff marks.
- Reducing wear caused by entering and exiting the vehicle.
- Providing a durable protective surface over the sill panel.
- Enhancing the appearance of the interior door opening.
- Delivering the original factory-style finish expected on early Porsche 911 models.
These trims not only improve appearance but also help preserve the bodywork beneath.
Why Do Door Threshold Protectors Fail?
After years of regular use, the original sill protectors can become damaged through constant foot traffic and exposure.
Common causes of deterioration include:
- Scratches and abrasion from footwear.
- Dents caused by impacts or heavy objects.
- Fading or wear of the black anodised finish.
- Corrosion from trapped moisture.
- Distortion during removal or previous repairs.
- Loose or damaged mounting points.
Worn threshold trims can significantly detract from the appearance of an otherwise well-maintained or restored interior.
When Should They Be Replaced?
Replacement is recommended when:
- The aluminium trim is scratched, dented or corroded.
- The original finish has faded or worn away.
- The protectors have become loose or damaged.
- Completing a full interior or body restoration.
- Repainting or repairing the door apertures.
- Returning the vehicle to factory-correct specification.
Replacing worn sill protectors provides an immediate improvement to the appearance of the vehicle while protecting newly painted bodywork from future damage.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90155111551
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
This Porsche Genuine OE Expansion Rivet is a factory plastic push-type fastening clip designed for securing the door sill step plate / threshold trim. Commonly referred to as a plastic rivet, expanding rivet, or trim clip, this component is widely used in classic Porsche models for fastening interior and exterior trim panels.
Sold individually, Typically multiple required per vehicle
Fits:
Porsche 911 1965 - 1973
Porsche 914 1970 - 1976
Diagram ref no 29
It replaces earlier reference 99959152640 and is supplied individually.
This is a multi-use trim fastening clip, also used in other interior applications depending on model and configuration.
This expansion rivet is inserted into pre-drilled holes and expands when pushed into place, locking the door sill plate or trim strip securely to the bodywork.
It provides a firm hold while allowing easy installation and removal, making it ideal for trim components that may require periodic servicing or replacement.
Functions & Technical Role
• Trim fastening: Secures door sill step plates and threshold trims
• Expansion locking design: Expands inside mounting holes for secure retention
• Vibration resistance: Prevents movement, rattling, or loosening of trim
• Non-corrosive material: Plastic construction resists rust and environmental damage
• OEM precision: Designed to Porsche specifications for correct fit and grip
Fitment / Position on car
• Fitting position: Interior / body trim
• Location: Door sill step plates (threshold trims) / Rocker panel trim strips / Interior trim panels (various applications)
Trim clips are often overlooked but are critical for maintaining proper fit and finish. Over time, they can:
• Become brittle or break
• Lose tension and fail to hold trim securely
• Be lost during removal or restoration work
A worn or missing rivet can lead to:
• Loose or rattling sill trims
• Poor alignment of interior panels
• Reduced overall finish quality
Replacing with genuine Porsche OE rivets ensures secure trim mounting and preserves the original appearance of the vehicle.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99959155040
The product you are viewing cross references to these numbers
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
Sold as a set of 2
Fits:
Porsche 944
Porsche 924
Porsche 968
Note: Pictures may not show actual product.
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
Sold as a set of 2
Fits:
Porsche 944
Porsche 924
Porsche 968
Note: Pictures may not show actual product.