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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://www.design91.uk/images/schemaLogo.png https://www.design91.uk/images/schemaLogo.png +443456003478 https://www.design91.uk Facebook Instagram

Side Sill Panels

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DISPLAYING 1 to 7 (of 7 products)
Special Order item
99650396
Product Information
Product Information
Side sill outer panel.
porsche

Fits:
Porsche 996 C2 / C4 1998-05 CABRIO

Click 'Zoom in' for large parts diagram.
Diagram ref no 3.

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Related, superseded, cross reference or alternative numbers for comparison.

99650396
99650396301GRV
99650396401GRV

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Special Order item
9965516
Product Information
Product Information
Door sill support. 

porsche

Fits:
Porsche 996 Carrera 1998-05
Porsche 996 Turbo 2001-05
Porsche 996 GT3 1999-05

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Diagram ref no 1

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Related, superseded, cross reference or alternative numbers for comparison.

9965516
99655162001
99655161901

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Special Order item
99950748440
Product Information
Product Information
Expander nut for Door sill trim, 9 X 22.
Sold each.

porsche

Fits:
Porsche 996 1998-04
Porsche 997.1 2005-08
Porsche 997.2 2009-12
Porsche 986 Boxster 1997-04
Porsche 987.1 Boxster 2005-08
Porsche 987.2 Boxster 2009-12
Porsche 987C.1 Cayman 2006-08
Porsche 987C.2 Cayman 2009-12

Diagram ref no 6

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Related, superseded, cross reference or alternative numbers for comparison.

99950748440
99950748440

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Special Order item
99650273
Product Information
Product Information
Rocker panel reinforcement.

porsche

Fits:
For Coupe and Targa models
Porsche 996 1998-05
Porsche 997.1 2005-08
Porsche 997.2 2009-12

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

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Related, superseded, cross reference or alternative numbers for comparison.

99650273
99650273301GRV
99650273300GRV
99650273401GRV
99650273400GRV

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99650396020
Product Information
Product Information
Rust repair panels for side sills to rear 1/4 panels Porsche 996 

retroline


The problem! 
 Porsche 996 rear wing and inner arch have a double skin join at the outer lips and this is where the rust is occurring. Once they start bubbling on the outside then its most likely a cut out and replace job for theses sections. At the complete rear wings are hard to find Design911 have come up with a less expensive solution by suppling just the rear replacement side sill panels and arches (sold separately). 

Fits: Porsche 996 C2 / C4 Standard body 

retroline

Click picture for large parts diagram.
Diagram ref no 1.



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

99650396020
99650396300GRV
99650396400GRV
99650396301GRV
99650396401GRV
99650396300
99650396400
99650396301
99650396401

The product you are viewing cross references to these numbers
Special Order item
99650396
Product Information
Product Information
Side Sill Outer Panel Coupe
left or right side

Fits:
Porsche 996 C2 / C4 1998-05

porsche

Click picture for large parts diagram.
Diagram ref no 3.

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

99650396
99650396300GRV
99650396400GRV

The product you are viewing cross references to these numbers
Special Order item
9A700769800::1
Product Information
Product Information
Tapping Screw. Black-coated tapping screw. Multiple applications, often used for exterior accessories such as side skirts or underbody protective coverings.
Torx-head - 4.8 x 16mm

porsche

Fits:
Porsche Boxster
Porsche Cayman
Porsche 996
Porsche 997

Click 'Zoom in' for large parts diagram.

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

9A700769800
99907323109
9A700769800

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DISPLAYING 1 to 7 (of 7 products)
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About Side Sill Panels

Reinforce your Porsche’s strength, style, and structure with genuine Porsche and reproduction side sill panels from Design911. The side sill, also known as the rocker panel, is a vital component of your vehicle’s chassis and lower body structure - providing rigidity, impact protection, and smooth aerodynamic flow along the sides of the car.

Over time, sill panels can become corroded or damaged, especially on classic Porsche models. Design911 offers a complete selection of OEM and reproduction sill panels engineered to original factory dimensions and specifications, ensuring flawless alignment, superior rust protection, and seamless integration with surrounding panels.

Whether you’re performing a concours-level restoration, repairing damage, or upgrading body rigidity, our side sill panels deliver authentic Porsche craftsmanship and durability.

Genuine Porsche Side Sill Panels
OEM factory panels designed to match Porsche’s exact fit and finish. Provide original strength, shape, and corrosion protection for a perfect body restoration.

Reproduction Sill Panels
High-quality reproduction panels made to OEM dimensions. Ideal for classic Porsche restorations where originality and affordability are key.

Outer Sill Panels
Visible body components that form the lower edge of the vehicle’s side profile. Protect the frame and enhance the Porsche’s exterior aesthetics.

Inner Sill Reinforcement Panels
Structural inner panels that add rigidity and support to the chassis. Critical for maintaining Porsche’s signature handling and safety.

Sill Repair Sections
Localized repair panels that allow partial restoration of damaged or corroded areas without replacing the entire sill assembly.

Mounting Brackets, Caps & Fittings
All necessary mounting accessories and end caps for accurate installation and long-term durability of Porsche sill assemblies.

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