Porsche 911 997 Boxster Cayman 987 Automatic Brake Pedal 99742309403

Porsche 911 997 Boxster Cayman 987 Automatic Brake Pedal is an original brake control system component designed for Porsche vehicles equipped with an automatic transmission. This used component from the Pedals, pedal pads and footrests category allows for maintaining the factory brake performance characteristics and the proper feel of pressure force while driving.

Specifications and technical data

• SKU: 99742309403
• Mark: Porsche
• Condition: Used
• OEM Part Number: 99742309403
• Substitutable numbers: 997 423 094 03, 99742309403, 997 423 094 04, 99742309404
• Gearbox type: Automatic
• Part type: Brake Pedal
• Category: Pedal Assemblies, Pads & Parts

Purpose and technical function

The presented brake pedal is a component designed for Porsche vehicles with an automatic transmission, where it is responsible for precisely transferring the driver's foot pressure to the braking system. The pedal construction is adapted to the characteristics of the 911 997, Boxster, and Cayman 987 models, which ensures proper geometry, travel, and ergonomics of operation within the factory range. The original component from this group guarantees:

• maintenance of the pressure force ratio intended by the manufacturer,
• proper cooperation with the brake booster mechanism,
• consistency with the factory mounting system in the driver's cabin.

Construction and fitment in the Pedals, pedal pads and footrests category

The brake pedal belongs to the group of control elements that directly affect driving safety. Its construction is optimized for stiffness, resistance to dynamic loads, and repeatability of operation over a long period of use. The applied geometry of the pedal arm and working surface allows for comfortable brake operation both in city driving and during more dynamic use. Thanks to the retention of factory mounting points and the appropriate length and shape of the arm, installation in dedicated Porsche models is carried out in an orderly manner, without the need for structural modifications. This is particularly important in the case of sports vehicles, where the precision of brake control has a direct impact on the stability and control of the car.

Operating characteristics in vehicles with an automatic transmission

In cars with an automatic transmission, the brake pedal is the only actively used pedal while driving, which is why its ergonomics and response repeatability are crucial. The presented element has been designed to provide:

• a clear brake engagement point,
• smooth increase in resistance when increasing pressure force,
• stable support for the driver's foot in typical load ranges. This type of characteristic promotes predictable vehicle behavior during emergency braking, parking maneuvers, and driving in conditions with limited grip.

Condition, service application, and benefits of choosing a used OEM part

The item is offered as a used part, which represents a reasonable compromise between the cost of repair and maintaining the original manufacturer's specification. Replacing the brake pedal is recommended, among other things, in the case of mechanical wear, damage resulting from a collision, or improper operation of the return mechanism. Using an original component from the same Porsche model group reduces the risk of fitment issues and ensures consistency with other control system elements. In service practice, such a brake pedal will prove useful both for post-accident repairs and for restoring full functionality to a vehicle used intensively, e.g., on a track or in city conditions.

Modernization expansion within the control system

If you are planning a comprehensive repair or modernization of the brake control zone in your Porsche and need other elements from the same group, such as additional pedals, pedal pads, or driver footrests, check the available parts in the Porsche Pedals, pedal pads and footrests category. For drivers interested in a broader approach to vehicle service, including assessing the cost-effectiveness of using original used components in other systems, an article describing the selection of used OEM parts in the context of loud exhaust operation may be helpful – more information can be found in the material on replacing exhaust system elements with original used parts.