How do you remove and install the brake booster and master cylinder on BMW M3?

To remove and install the brake booster and master cylinder, first disconnect the negative battery cable and siphon the brake fluid from the reservoir. Remove the reservoir and, if applicable, disconnect the clutch hydraulic hose. Disconnect all brake lines from the master cylinder and remove the instrument panel trim from the bottom left inside the passenger compartment. Take off the return spring from the brake pedal, press off the clip, and remove the pin connecting the booster rod to the brake pedal. Remove the four nuts and pull the booster and master cylinder out of the engine compartment. For installation, if the filter in the brake booster is clogged, clean it by removing the dust boot, retainer, damper, and filter, ensuring that the slots in the damper and filter are offset by 180 degrees upon reinstallation. Install the brake booster and torque the nuts to 16-17 ft. lbs. (22-24 Nm), then connect the brake lines and torque them to 10 ft. lbs. (14.2 Nm). Reconnect the reservoir and lines, attach the brake pedal to the pushrod, adjust the pedal height and brake light switch, and finally fill and bleed the system.

Genuine BMW M3 Brake Booster

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9 Brake Boosters found

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BMW M3 Power Brake Booster
Part Number: 34332282193
$550.71 MSRP: $699.37
You Save: $148.66 (22%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Brake Servo Unit; Brake Booster
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2001-2006 BMW M3 | Convertible(E46), Coupe(E46)
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BMW M3 Power Brake Booster
Part Number: 34332282622
$550.71 MSRP: $699.37
You Save: $148.66 (22%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Brake Servo Unit; Booster Assembly, Brake Booster
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2001-2006 BMW M3 | Convertible(E46), Coupe(E46)
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BMW M3 POWER BRAKE
Part Number: 34517885729
$1074.82 MSRP: $1497.05
You Save: $422.23 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Booster, Brake Booster, Master Cylinder
- Replaces: 34-51-7-882-966
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2021 BMW M3 | 6 Cyl 3.0 L GAS
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BMW M3 BRAKE BOOSTER
Part Number: 34517888941
$1340.72 MSRP: $1867.40
You Save: $526.68 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Booster, Booster Assembly, Master Cylinder
- Replaced by: 34517909436
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2023-2024 BMW M3 | 6 Cyl 3.0 L GAS
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BMW M3 Power Brake Booster
Part Number: 34332283392
$463.46 MSRP: $640.00
You Save: $176.54 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Brake Servo Unit; Booster Assembly, Brake Booster
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2008-2013 BMW M3 | Convertible(E93), Coupe(E92), Sedan(E90)
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BMW M3 Power Brake Booster
Part Number: 34337849876
$483.67 MSRP: $673.68
You Save: $190.01 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Brake Servo Unit; Booster, Brake Booster
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2015-2018 BMW M3 | Sedan(F80)
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BMW M3 Power Brake Booster
Part Number: 34337850999
$483.67 MSRP: $673.68
You Save: $190.01 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Brake Servo Unit; Booster, Brake Booster
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2015-2018 BMW M3 | Sedan(F80)
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BMW M3 Power Brake Booster
Part Number: 34332225506
$1414.57 MSRP: $1879.32
You Save: $464.75 (25%)
Product Specifications
- Other Name: Brake Servo Unit; Brake Booster
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1988-1991 BMW M3 | Coupe(E30)
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BMW M3 Power Brake Booster
Part Number: 34331162965
Product Specifications
- Other Name: Brake Servo Unit; Brake Booster
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1995-1999 BMW M3 | Convertible(E36), Coupe(E36), Sedan(E36)

BMW M3 Brake Booster

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BMW M3 Brake Booster Parts Questions & Experts Answers

Power Brake Booster
34332225506
Q: How do you remove and install the brake booster and master cylinder on BMW M3?
A:
To remove and install the brake booster and master cylinder, first disconnect the negative battery cable and siphon the brake fluid from the reservoir. Remove the reservoir and, if applicable, disconnect the clutch hydraulic hose. Disconnect all brake lines from the master cylinder and remove the instrument panel trim from the bottom left inside the passenger compartment. Take off the return spring from the brake pedal, press off the clip, and remove the pin connecting the booster rod to the brake pedal. Remove the four nuts and pull the booster and master cylinder out of the engine compartment. For installation, if the filter in the brake booster is clogged, clean it by removing the dust boot, retainer, damper, and filter, ensuring that the slots in the damper and filter are offset by 180 degrees upon reinstallation. Install the brake booster and torque the nuts to 16-17 ft. lbs. (22-24 Nm), then connect the brake lines and torque them to 10 ft. lbs. (14.2 Nm). Reconnect the reservoir and lines, attach the brake pedal to the pushrod, adjust the pedal height and Brake Light Switch, and finally fill and bleed the system.