Dynamic Friction 355-40087 Brake Master Cylinder

Brake Master Cylinder for Ram HD Trucks

The Dynamic Friction DFC Brake Master Cylinder, part number 355-40087, is a direct-fit hydraulic brake component for select Ram heavy-duty trucks. It is built for 2012-2018 Ram 2500 and 2012-2018 Ram 3500 applications, including 2012-2016 Ram 2500 models with Hydro Boost.

Key Features

• Brake master cylinder for hydraulic brake system service
• Compatible with select Ram 2500 and Ram 3500 trucks
• Fits 2012-2018 Ram 2500 and 2012-2018 Ram 3500 applications
• Includes Hydro Boost fitment for 2012-2016 Ram 2500
• DFC Brake Master Cylinder line from Dynamic Friction
• Part number 355-40087 for accurate catalog lookup

Detailed Description

The DFC Brake Master Cylinder line from Dynamic Friction covers brake hydraulic replacement needs for Ram HD platforms where consistent pedal response and hydraulic pressure are critical. This 355-40087 master cylinder is listed for Ram 2500 and Ram 3500 trucks across the 2012-2018 model years, with a separate Hydro Boost application noted for 2012-2016 Ram 2500. Use this part when servicing the master cylinder on a Ram 2500 or Ram 3500 and you need a catalog-matched replacement by part number 355-40087.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Low or inconsistent brake pedal feel
• Internal master cylinder leakage
• Brake fluid pressure loss in the hydraulic system
• Brake warning concerns tied to master cylinder wear
• Service replacement on Ram 2500 and Ram 3500 brake hydraulics

Installation Notes and Tips

• Verify the vehicle’s brake booster type before ordering, especially on 2012-2016 Ram 2500 Hydro Boost applications.
• Confirm the part number 355-40087 against the existing unit and vehicle build details.
• Inspect brake lines, fittings, and fluid condition during replacement.
• Bleed the brake system thoroughly after installation to remove trapped air.

Quality Assurance

DFC Brake Master Cylinder components are cataloged for specific vehicle applications to support accurate fitment selection. Confirm the Ram 2500 or Ram 3500 year range and brake system configuration before installation.