Dynamite Friction 355-47203 Brake Master Cylinder

Dynamite Friction DFC Brake Master Cylinder

The Dynamite Friction DFC Brake Master Cylinder, part number 355-47203, is a direct-fit hydraulic brake component for select heavy-duty and commercial applications. It is listed for 1982-1989 Dodge B350 school bus models, 1982-1983 Plymouth PB350 school bus models, and 1975-1978 Chevrolet P30 chassis with 15 inch rear drum and JB9 configuration.

Key Features

• Brake master cylinder for hydraulic brake system service
• DFC Brake Master Cylinder product line from Dynamite Friction
• Fits 1982-1989 Dodge B350, school bus
• Fits 1982-1983 Plymouth PB350, school bus
• Fits 1975-1978 Chevrolet P30, 15 inch rear drum, JB9
• Part number 355-47203 for application matching and catalog lookup

Application Details

This brake master cylinder is cataloged for Dodge B350 and Plymouth PB350 school bus applications, plus Chevrolet P30 chassis equipped with 15 inch rear drum and JB9 notes. Use 355-47203 when replacing a worn or leaking master cylinder on these specific vehicles to restore hydraulic pressure delivery in the brake system.

Common Issues This Part May Address

• Brake pedal travel that increases due to internal master cylinder wear
• External brake fluid leakage at the master cylinder body
• Reduced hydraulic pressure in the brake system
• Soft or inconsistent brake pedal feel
• Brake warning concerns tied to master cylinder failure

Installation Notes

Verify the vehicle year, make, model, and configuration notes before ordering. Confirm the brake system layout, including the 15 inch rear drum and JB9 details on Chevrolet P30 applications, and inspect the hydraulic lines, reservoir condition, and brake fluid before installation. After replacement, bleed the brake system thoroughly and check for leaks and proper pedal operation.

Quality Assurance

DFC Brake Master Cylinder parts are cataloged for specific vehicle applications to support accurate fitment selection. Part number 355-47203 is listed for direct application matching on the vehicles shown above.