This DFC component is part of the 100% Outright Program—no core return or deposit required. Engineered to meet or exceed OEM specifications for direct-fit performance. The DFC 355-45003 brake master cylinder is designed specifically for the 1978-1981 Buick Riviera, ensuring reliable braking response and durability under demanding conditions. Constructed from high-quality materials, this master cylinder provides a precise fit and consistent operation, vital for maintaining optimal brake system performance and safety.
This master cylinder offers a bore diameter suitable for direct replacement of factory units, with an outlet size compatible with standard inverted flare fittings. Its robust construction ensures resistance to wear and corrosion, making it suitable for long-term service in heavy-duty applications. The component’s design adheres to OEM standards to facilitate straightforward installation and seamless integration into your vehicle’s existing brake system.
Expert Installation & Field Note: Drawing from our shop experience specializing in heavy-duty brakes since 1985, we recommend verifying pushrod alignment before final mounting to prevent internal cup damage.
Features:
- Bore Diameter: See manufacturer specifications
- Outlet Size: INV
- Application: 1978-1981 Buick Riviera
- Construction: Premium cast iron

















