The Brake Fluid Reservoir with Master Cylinder for Porsche Cayenne 92A / VW Touareg is an original brake system component from the servo and brake force regulators category, designed for premium vehicles. This used OEM part ensures factory geometry, correct operating pressure, and predictable brake system performance under demanding operating conditions.
Specifications and technical data
- SKU: 7P0611303A
- Mark: Porsche
- Condition: Used
- OEM Part Number: 7P0611303A
- Substitutable numbers: 7P0611303A, 7P0 611 303 A
- Category: Brake Servos
Purpose and Role in the Braking System
The brake fluid reservoir integrated with the master cylinder is responsible for storing fluid and generating pressure in the brake circuits. In conjunction with the servo and brake force regulator, it forms a crucial safety module that translates pedal pressure into stable, repeatable braking of all wheels.
In vehicles such as the Porsche Cayenne 92A and VW Touareg, with their significant curb weight and high highway speeds, a properly functioning master brake cylinder is essential for:
- maintaining predictable vehicle behavior during sudden braking,
- stable pressure distribution between axles, in cooperation with the brake force regulator,
- maintaining appropriate brake pedal firmness across the entire operating temperature range.
Construction and OEM Compatibility
The offered component comes from the vehicle manufacturer's production line, ensuring full compatibility with the factory brake system design. Original OEM construction guarantees:
- precise fitment with the servo and brake force regulator used in the Porsche Cayenne 92A and VW Touareg,
- correct placement of ports and connections for brake lines and fluid lines,
- preservation of factory operating parameters for the ABS/ESP system, without requiring modifications.
This allows for a factory-like installation, and the entire servo – brake force regulator – master cylinder assembly maintains structural and functional consistency.
Benefits of Using an Original Module
Choosing a used, original brake fluid reservoir with a master cylinder for premium SUVs offers a range of practical advantages:
- factory braking characteristics – maintaining the same pedal feel as in the factory configuration,
- consistency with the servo and brake force regulator system – no compatibility or fitment issues,
- optimal cost-to-quality ratio compared to aftermarket replacements of unknown origin,
- ensured operational safety with proper installation and brake system bleeding.
This solution is particularly recommended for professional repairs where compliance with manufacturer service documentation and stable brake system performance parameters are crucial.
Condition, Installation, and Best Service Practices
The component is from a disassembly and is intended for reinstallation after standard servicing. It is recommended that installation be performed by a qualified mechanic, following the procedures for bleeding and leak testing the entire brake system.
- Before installation, it is advisable to inspect the condition of the brake lines, flexible hoses, servo, and brake force regulator.
- After installation, thorough bleeding of the system and a road test with ABS/ESP function check are mandatory.
- Regular replacement of brake fluid according to the vehicle manufacturer's recommendations extends the lifespan of the master cylinder and other system components.
If you want to better care for the operation of disassembled components, check out our guide: How to Extend the Lifespan of Used Car Parts – you will find practical tips on maintaining brake system components and other assemblies.
Related Porsche Servos and Brake Force Regulators
If you are also looking for other Porsche servos and brake force regulators for your vehicle, check out our dedicated category: Porsche servos and brake force regulators. This will allow you to easily assemble a cohesive set of brake system components, tailored to your car's specific configuration.
