Bosch
Brake Booster

Bosch 0204777573 Power Brake Booster

Brand Bosch 0204777573
Booster Type Hydraulic
Master Cylinder Included No
Mounting Hardware Included No
Gasket Or Seal Included No
Mounting Bracket Included Yes
Automotive Item Weight (lbs) 13.999354 lb
Product line Brake Booster
Fits Chevrolet and GMC · 44 vehicles

Hydraulic booster assembly. Delivers power-assisted braking with Bosch engineering.

Mounting bracket included. Simplifies installation with the bracket already provided.

Brake booster. A direct-fit replacement for the brake assist system.

Cross-references 15854059 for the same application. See all 1.

$298.53Free shipping
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Bosch Hydro-Boost Brake Booster

Bosch Brake Booster part number 0204777573 is a hydraulic power brake booster assembly for select GM heavy-duty trucks and SUVs. It is built for vehicles that use hydro-boost brake assist and includes a mounting bracket for a direct replacement-style service job.

Compatible With 2003-2007 Chevrolet Silverado HD, Silverado Classic, Avalanche 2500, Suburban 2500, and 2003-2007 GMC Sierra HD, Sierra Classic, and Yukon XL 2500 applications. This Bosch 0204777573 brake booster is also listed for 2007 Chevrolet Silverado 1500 HD Classic and GMC Sierra 1500 HD Classic models.

Key Features

  • Hydraulic booster type for hydro-boost brake assist systems
  • Mounting bracket included
  • Master cylinder not included
  • Mounting hardware not included
  • Gasket or seal not included
  • Automotive item weight: 13.999354 lb

Product Details

The Bosch Brake Booster line focuses on brake assist components for vehicles that rely on hydraulic pressure rather than vacuum assist. Part number 0204777573 is a Bosch hydro-boost assembly made for the listed Chevrolet and GMC truck platforms, including Silverado 2500 HD, Silverado 3500, Sierra 2500 HD, Sierra 3500, and related Classic applications. If you are replacing a worn booster on a Chevrolet Silverado 2500 HD or GMC Sierra 3500, this unit provides the core brake assist assembly needed for the system.

This part cross-references 15854059 for the same application.

What It Helps Address

  • Hard brake pedal feel caused by a failing hydro-boost unit
  • Reduced brake assist from internal hydraulic wear
  • Brake response issues tied to booster leakage or loss of assist
  • Replacement needs after booster corrosion or mechanical damage
  • Service repair on GM heavy-duty brake booster systems

Installation Notes

Verify the vehicle uses a hydraulic brake booster before ordering. Transfer or source any required master cylinder, mounting hardware, and seals separately, since they are not included with this Bosch 0204777573 assembly. Confirm fitment against the vehicle’s brake system configuration and existing part number before installation.

Quality Assurance

Bosch is a recognized OE supplier in automotive braking systems, and this brake booster is built to match the listed application requirements for 2003-2007 Chevrolet and GMC trucks and SUVs.

This part fits 44 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersNotes
2007ChevroletSilverado 1500 HD ClassicBrake Booster
2007ChevroletSilverado 2500 HD Classic6.6LV8Brake Booster
2007ChevroletSilverado 3500 ClassicBrake Booster
2007GMCSierra 1500 HD ClassicBrake Booster
2007GMCSierra 2500 HD ClassicBrake Booster
2007GMCSierra 3500 ClassicBrake Booster
2006ChevroletAvalanche 2500Brake Booster
2006ChevroletSilverado 1500 HDBrake Booster
2006ChevroletSilverado 2500 HD6.6LV8Brake Booster
2006ChevroletSilverado 3500Brake Booster
2006ChevroletSuburban 2500Brake Booster
2006GMCSierra 1500 HDBrake Booster
2006GMCSierra 2500 HDBrake Booster
2006GMCSierra 3500Brake Booster
2006GMCYukon XL 2500Brake Booster
2005ChevroletAvalanche 2500Brake Booster
2005ChevroletSilverado 1500 HDBrake Booster
2005ChevroletSilverado 2500 HD6.6LV8Brake Booster
2005ChevroletSilverado 3500Brake Booster
2005ChevroletSuburban 2500Brake Booster
2005GMCSierra 1500 HDBrake Booster
2005GMCSierra 2500 HDBrake Booster
2005GMCSierra 3500Brake Booster
2005GMCYukon XL 2500Brake Booster
2004ChevroletAvalanche 2500Brake Booster
2004ChevroletSilverado 2500Brake Booster
2004ChevroletSilverado 2500 HD6.6LV8Brake Booster
2004ChevroletSilverado 3500Brake Booster
2004ChevroletSuburban 2500Brake Booster
2004GMCSierra 2500Brake Booster
2004GMCSierra 2500 HDBrake Booster
2004GMCSierra 3500Brake Booster
2004GMCYukon XL 2500Brake Booster
2003ChevroletAvalanche 2500Brake Booster
2003ChevroletSilverado 1500 HDBrake Booster
2003ChevroletSilverado 2500Brake Booster
2003ChevroletSilverado 2500 HD6.6LV8Brake Booster
2003ChevroletSilverado 3500Brake Booster
2003ChevroletSuburban 2500Brake Booster
2003GMCSierra 1500 HDBrake Booster
2003GMCSierra 2500Brake Booster
2003GMCSierra 2500 HDBrake Booster
2003GMCSierra 3500Brake Booster
2003GMCYukon XL 2500Brake Booster
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
15854059