Jaguar X-Type Brake Servo Master Cylinder Vacuum Booster 1X43-2005-BC

Jaguar X-Type Brake Servo Master Cylinder Vacuum Booster is a key component of the braking system, responsible for the stable transfer of brake pedal pressure into the circuit. The offered servo unit, integrated with the master brake cylinder, has been designed specifically for Jaguar X-Type models, ensuring consistent operation, predictable system response, and compliance with the vehicle's factory characteristics. This is an OEM solution that allows for restoring proper brake performance without compromising safety.

Specifications and technical data

• SKU: RHD-C2S31058
• Mark: Jaguar
• Condition: Used
• OEM Part Number: C2S31058
• Substitutable numbers: C2S31058, 1X432005BC, 1X43-2005-BC
• Part type: Brake Servo
• Category: Brake Servos

Purpose and function in the braking system

The presented component belongs to the Brake Servos and Proportioning Valves group, responsible for assisting pedal pressure and proper pressure dosing in the circuit. In practice, this means:

• reducing the force the driver must apply to the brake pedal,
• more linear, predictable vehicle response to braking,
• maintaining stable system pressure during sudden maneuvers,
• preserving the factory braking characteristics of the Jaguar X-Type. Thanks to the integration of the servo with the master brake cylinder, the entire assembly works as a cohesive module, which reduces the risk of leaks at connections and facilitates the diagnosis of potential faults.

Construction of the servo + master cylinder assembly

The design utilizes classic vacuum assistance, working in conjunction with the engine's vacuum system. The main functional features of this solution are:

• mechanical transfer of pedal force to the master cylinder piston with additional vacuum assistance,
• rigid connection to the bulkhead, ensuring stable operation under sudden loads,
• designed for the specific pedal geometry and working stroke of the Jaguar X-Type. Such a configuration allows for maintaining the proper pedal stroke length, tactile engagement point, and braking force repeatability, which is particularly important during dynamic driving and in emergency situations.

Benefits of using an original Jaguar assembly

Choosing an original solution dedicated to the Jaguar X-Type brings a number of practical advantages:

• Factory fitment – correct mounting spacing, pushrod lengths, and pedal geometry eliminate the need for modifications.
• Consistency with other system components – the servo and cylinder are designed for specific pipe diameters, calipers, and brake force proportioning valves.
• Stable operating parameters – the assistance characteristics intended by the manufacturer are maintained, which translates into repeatable braking sensations.
• Hassle-free installation – the assembly is prepared for installation in place of the factory component, which shortens service time. The item comes from a vehicle and is offered as a used part, which allows for economical repair while maintaining the original braking system specification.

Selection, installation, and operation

When selecting this type of component, it is crucial to match it to the specific model version and ensure compatibility with the factory braking system configuration. In practice, it is worth paying attention to:

• compatibility with the body style and engine version of the Jaguar X-Type,
• type of braking system used (disc diameters, caliper type),
• condition of brake lines and the tightness of the entire circuit after installation. After installation, it is recommended to perform a full system bleed, check the pedal stroke, and conduct a road test in safe conditions to confirm the proper operation of the assistance and even braking performance on both axles.

Braking zone expansion and related parts

If you are planning a comprehensive repair or upgrade of the braking zone in your Jaguar and need other elements from the same group, such as additional servos, brake force proportioning valves, or compatible assistance modules, check the available parts in the Jaguar Brake Servos and Proportioning Valves category. For users who are simultaneously servicing comfort systems in their car, a guide on selecting and maintaining components responsible for cabin temperature may be helpful – detailed tips can be found in the article Air conditioning and heating – part selection and maintenance for year-round comfort.