Dynamic Friction 355-46021 Brake Master Cylinder

DFC Brake Master Cylinder for Cadillac ATS and CTS

The Dynamic Friction DFC Brake Master Cylinder, part number 355-46021, is a direct-fit hydraulic brake component for select Cadillac ATS and CTS applications. It is built for vehicles with standard or performance brake configurations listed below, including Brembo front caliper and J55/J56 brake packages.

Key Features

• Brake master cylinder for hydraulic brake system service
• Fits 2013-2015 Cadillac ATS, N/A
• Fits 2016-2019 Cadillac ATS, N/A, Standard Brakes; Brembo Front Calipers
• Fits 2015-2019 Cadillac CTS, N/A
• Fits 2014 Cadillac CTS, N/A, Heavy Duty Brakes (J55) Vsport; Performance Brakes (J56)
• Dynamic Friction DFC Brake Master Cylinder line
• Part number 355-46021 for application matching

Product Details

The DFC Brake Master Cylinder is part of Dynamic Friction’s brake hydraulics lineup and is specified for Cadillac ATS and Cadillac CTS models across multiple years. Use 355-46021 when replacing a worn or leaking master cylinder on vehicles listed in the fitment data, including ATS models with standard brakes or Brembo front calipers and CTS models with standard, heavy-duty, or performance brake packages. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues This Part Can Address

• Low or inconsistent brake pedal response caused by master cylinder wear
• External brake fluid leakage at the master cylinder
• Internal hydraulic bypass that affects pedal feel
• Brake warning concerns tied to master cylinder failure
• Uneven hydraulic pressure delivery in the brake system

Installation Notes and Tips

Confirm the brake package on the vehicle before ordering, especially on Cadillac ATS and CTS models with Brembo, J55, or J56 brake equipment. After installation, bleed the brake system thoroughly and verify pedal firmness and fluid level before returning the vehicle to service. Match the part number 355-46021 to the listed fitment for proper application selection.

Quality Assurance

Dynamic Friction’s DFC Brake Master Cylinder line is cataloged for specific vehicle and brake-package applications to support accurate replacement selection.