Dynamite Friction 355-31020 Brake Master Cylinder

DFC Brake Master Cylinder for BMW Applications

The Dynamite Friction DFC Brake Master Cylinder, part number 355-31020, is a direct-fit brake hydraulic replacement for select BMW models from 1998 through 2003. It is listed for multiple BMW 5 Series, 7 Series, and X5 applications, including several vehicles with specific DSC exclusions and 2-port configurations.

Key Features

• Brake master cylinder for BMW brake hydraulic service
• DFC Brake Master Cylinder product line from Dynamite Friction
• Part number 355-31020 for accurate ordering and lookup
• Fits select 1998-2003 BMW 525i, 530i, 528i, 540i, 740i, 740iL, 750iL, and X5 applications
• Application-specific fitment includes notes for DSC and 2-port configurations

Fitment Details

• Fits 2001-2003 BMW 525i, except DSC; 2 port.
• Fits 2001-2003 BMW 530i, except DSC.
• Fits 2000-2001 BMW X5, except DSC; 2 port.
• Fits 1998-2000 BMW 528i.
• Fits 1999-2000 BMW 528i, except DSC.
• Fits 1998 BMW 540i, except DSC.
• Fits 1998 BMW 740i.
• Fits 1998 BMW 740iL.
• Fits 1998 BMW 750iL.

What This Part Helps Address

• Brake pedal travel that feels inconsistent or excessive
• Loss of hydraulic pressure in the brake system
• Internal master cylinder wear affecting braking response
• Fluid leakage at the master cylinder area
• Brake system service on select BMW 5 Series, 7 Series, and X5 models

Installation Notes

Verify the vehicle’s DSC status and port configuration before ordering, since several listed applications are excluded when equipped with DSC and some require a 2-port setup. Confirm the part number 355-31020 against the original master cylinder and match the vehicle exactly to the fitment notes for your BMW 525i, 530i, 528i, 540i, 740i, 740iL, 750iL, or X5.

Quality Assurance

Dynamite Friction identifies this component as part of its DFC Brake Master Cylinder line, built for application-specific brake hydraulic replacement on the listed BMW models. This part cross-references no additional part numbers in the provided data.