PowerStop L4678 Disc Brake Caliper - Rear Right

PowerStop Rear OE Stock Replacement Caliper Overview

The PowerStop - Rear OE Stock Replacement Caliper (Part Number L4678) is designed to provide reliable braking performance for select Ford and Lincoln vehicles. Engineered as a direct replacement for rear disc brake calipers, this component ensures consistent stopping power and durability.

• Cast iron caliper casting for strength and heat resistance
• Single 51.05 mm phenolic piston for smooth operation
• Floating caliper design with included caliper slides
• Gray finish for corrosion resistance
• Compatible with Ford and Lincoln rear disc brake systems

Product Line Details: PowerStop - Rear OE Stock Replacement Caliper

This caliper is part of the PowerStop - Rear OE Stock Replacement Caliper line, which focuses on providing direct OE-style replacements for rear brake calipers. These calipers are designed to match original equipment specifications, ensuring proper fit and function without the need for additional modifications. The line emphasizes durability and consistent braking performance for vehicles requiring rear disc brake calipers.

Technical Description and Features

The L4678 caliper features a cast iron construction that offers durability and effective heat dissipation during braking. It utilizes a single phenolic piston with a diameter of 51.05 mm, which helps reduce heat transfer to the brake fluid, minimizing the risk of brake fade. The floating caliper design allows for self-alignment during braking, improving pad wear and braking efficiency. Caliper slides are included to facilitate smooth movement, while the gray finish provides corrosion resistance. The bleeder screw thread size is 3/8 x 24, compatible with standard brake bleeding tools.

Compatible Vehicles and Applications

• Ford Blackwood rear disc brake replacement
• Ford Expedition rear brake caliper upgrade
• Ford F-150 and F-150 Heritage rear brake system maintenance
• Ford F-250 rear disc brake caliper replacement
• Lincoln Navigator and Town Car rear brake caliper service

Installation Notes and Tips

• Ensure the brake system is properly bled after installation to remove air
• Verify compatibility with your vehicle’s rear brake system before installation
• Use appropriate tools for the 3/8 x 24 bleeder screw to avoid damage
• Inspect brake pads and rotors for wear and replace if necessary
• Do not reuse mounting hardware as it is not included with this caliper

Quality Assurance and Warranty

PowerStop manufactures this rear disc brake caliper to meet or exceed OEM standards for fit and function. The cast iron construction and phenolic piston material contribute to long-lasting performance under normal operating conditions. While specific warranty details are not provided, PowerStop products typically undergo rigorous quality control to ensure reliability and safety in braking applications.