The Meritor booster part number R43MDC4057X is a genuine OEM brake booster for heavy-duty truck applications. Sourced directly through Meritor, this unit carries the original manufacturer part number and is sold by Pro Gear and Transmission. Brake boosters are a critical component of the hydraulic or air-assist braking system, translating driver input into the braking force needed to slow or stop a loaded commercial vehicle. If you are cross-referencing against a Rockwell or Meritor-Rockwell part number, note that Meritor absorbed the Rockwell truck axle and brake lines and now carries those parts under the Meritor brand. Call us to confirm this booster is the correct unit for your specific chassis and brake system configuration.
Features
Genuine Meritor OEM part number R43MDC4057X
Brake booster for heavy-duty commercial truck applications
Meritor successor to Rockwell truck brake line components
Sold by Pro Gear and Transmission
Call us to verify fitment for your specific vehicle and brake system
