Mercedes W463(-01) BCB enhanced performance brake booster

The Problem This Solves

Owners of early G-Class (2001 and earlier) face two issues at once: the original booster (OE A 002 430 99 30) is discontinued and used units are inconsistent, while modern usage—bigger tires, added weight, faster roads—demands more assist and better control than the old hardware delivers. The result is a heavy pedal, delayed deceleration, and a wider safety margin than you intended.

BCB's Answer

BCB starts with an all-new German-made booster and applies a proprietary output-curve calibration. The unit installs bolt-on with no holes, no cutting, and no welding—so originality and resale value stay intact—yet the pedal gains authority and predictability.

• Control improves because the assist curve is reshaped to build confidence in the everyday pedal range.

Fitment & Quick Self-Check

• Who it fits: 2001 and earlier G-Class, left- or right-hand drive, whose booster has no sensor mounted on the canister.

• How to check: Open the engine bay and look at the booster . If you see an electrical connector or pressure switch, that's the sensor-type setup; this part is for non-sensor versions only.

• OE reference for context: A 002 430 99 30 (formerly $1,500+ new; now NLA).

What the Calibration Feels Like

• City stop-and-go: The pedal builds decel earlier and more consistently, reducing the need for excessive leg force.

• Heavy vehicles: With passengers, gear, or accessories on board, the booster maintains pedal support and helps the car "take a set" sooner.

• Highway and long descents: Initial bite feels less vague, mid-stroke firmness is preserved, and transitions become easier to time.

Who Benefits Most

1. Upsized tires/wheels: Larger rolling mass and diameter raise braking demand; added assist helps recover margin.

2. Frequent load: Family trips, overlanding, or daily hauling all appreciate extra support and repeatability.

3. Two-car households with a supercar: Closing the feel gap reduces mental recalibration when you switch keys.

Installation and Vehicle Integrity

This upgrade is fully reversible and non-invasive. It mounts to factory points and keeps the body untouched. For collectors and long-term owners, that matters.

What It Won't Fix

A booster cannot mask vacuum leaks, degraded pads/rotors, seized calipers, swollen hoses, or a leaking master cylinder. Service faults first; the booster then elevates a healthy system's ceiling.

Summary Specs

• Unit: New, German-made brake booster

• Calibration: BCB Brake output curve and assist level

• Fitment: G-Class ≤2001, non-sensor booster, LHD/RHD

• OE reference: A 002 430 99 30 (discontinued; ~$1,500+ when new)

• Install: Direct bolt-on; no cutting/welding/body mods

Estimated installation time: 1.5–3 hours.