Raybestos FRC4178 Disc Brake Caliper - Front Left

Reliable Remanufactured Disc Brake Caliper for Ford and Mazda

The Raybestos R-Line; Friction-Ready Caliper, Remanufactured disc brake caliper (part number FRC4178) offers a durable and precise braking solution for select Ford and Mazda vehicles. Designed to meet OEM specifications, this semi-loaded caliper ensures consistent performance and safety for your vehicle's braking system.

• Caliper casting material: cast iron for strength and durability
• Bleeder screw thread size: 7/16"-20 for proper brake fluid bleeding
• Semi-loaded caliper configuration for easier installation
• Caliper piston diameter: 3.000 inches (76.2 mm) for accurate fitment
• Remanufactured manufacturing type with plain surface finish
• Compatible with Ford Aerostar, B2300, B3000, B4000, Bronco II, Explorer, Ranger and Mazda Navajo models

About the Raybestos R-Line; Friction-Ready Caliper, Remanufactured

The R-Line; Friction-Ready Caliper, Remanufactured product line by Raybestos focuses on providing remanufactured disc brake calipers that are ready for immediate installation with friction material. This line is engineered to meet strict quality standards, offering a cost-effective alternative to new calipers while maintaining reliable braking performance. The FRC4178 model is part of this line, ensuring compatibility and durability for specific Ford and Mazda vehicles.

Product Details and Specifications

This disc brake caliper features a cast iron construction, which provides the necessary strength and heat resistance required for effective braking. The semi-loaded configuration simplifies the installation process by including some components pre-assembled. The caliper piston diameter measures 3.000 inches (76.2 mm), matching OEM dimensions for proper fit and function. The bleeder screw thread size of 7/16"-20 allows for standard brake fluid bleeding procedures. The plain surface finish is typical for remanufactured calipers, ready to accept friction material and perform reliably.

Common Applications and Problem Solving

• Replacement for worn or seized disc brake calipers on Ford Aerostar and Explorer models
• Restores braking performance on Mazda Navajo and Ford Ranger vehicles
• Addresses brake fluid leaks caused by damaged bleeder screws or seals
• Solves uneven brake pad wear due to caliper piston sticking
• Improves brake pedal feel and responsiveness after caliper failure

Installation Notes and Tips

Before installation, verify compatibility with your specific vehicle make and model. The semi-loaded design reduces assembly time but may require additional components such as brake pads and hardware. Ensure the bleeder screw is properly tightened and free of debris to facilitate effective brake bleeding. Follow manufacturer torque specifications for mounting bolts and check for proper piston movement after installation.

Quality Assurance and Warranty

Raybestos remanufactured calipers undergo rigorous inspection and testing to meet industry standards. The FRC4178 caliper is built to provide reliable braking performance consistent with OEM requirements. Warranty coverage details should be confirmed with the parts provider, as Raybestos typically offers limited warranties on remanufactured brake components.