PowerStop L4921 Disc Brake Caliper - Rear Left

PowerStop Rear OE Stock Replacement Caliper Overview

The PowerStop - Rear OE Stock Replacement Caliper (Part Number L4921) is designed specifically for Ford F-250 Super Duty and F-350 Super Duty models. Engineered to meet original equipment specifications, this rear disc brake caliper ensures reliable braking performance and durability for heavy-duty applications.

• Cast iron caliper casting for strength and heat resistance
• Floating caliper design with two phenolic pistons (48.01 mm diameter)
• Includes caliper slides and mounting bracket for proper fitment
• Gray finish for corrosion resistance
• Bleeder screw thread size 3/8 x 24 for easy maintenance
• Grade type: Regular for standard braking needs

About the PowerStop - Rear OE Stock Replacement Caliper Line

The PowerStop - Rear OE Stock Replacement Caliper line focuses on providing direct replacement parts that match the original equipment specifications for rear brake systems. This ensures compatibility and consistent braking performance for vehicles like the Ford F-250 Super Duty and F-350 Super Duty. The L4921 caliper maintains the OE design with a floating caliper type and phenolic pistons to reduce heat transfer and improve brake pad life.

Detailed Product Description

This disc brake caliper features a durable cast iron construction that withstands the rigors of heavy-duty use. The floating caliper design allows for smooth piston movement, while the two phenolic pistons with a diameter of 48.01 mm help reduce heat absorption, minimizing brake fade. The caliper slides are included to ensure proper alignment and operation, and the mounting bracket is provided for secure installation. Finished in gray, the caliper offers corrosion resistance to extend service life. The bleeder screw thread size of 3/8 x 24 facilitates routine brake system bleeding and maintenance.

Common Applications and Issues Addressed

• Replacement for worn or seized rear calipers on Ford F-250 Super Duty and F-350 Super Duty
• Restores proper brake pad alignment and caliper movement
• Addresses brake drag caused by faulty caliper pistons or slides
• Improves braking consistency and pedal feel
• Prevents brake fluid leaks from damaged caliper pistons or seals

Installation Notes and Tips

• Ensure compatibility with Ford F-250 Super Duty and F-350 Super Duty rear brake systems before installation
• Use proper tools to avoid damaging the phenolic pistons during installation
• Bleed the brake system thoroughly after caliper replacement to remove air
• Inspect brake pads and rotors for wear and replace if necessary
• Verify mounting bracket alignment and torque specifications according to manufacturer guidelines

Quality Assurance and Warranty

The PowerStop - Rear OE Stock Replacement Caliper L4921 is manufactured to meet or exceed OEM standards for durability and performance. The cast iron construction and phenolic pistons are tested for reliability under heavy-duty conditions. While specific warranty details are not provided, PowerStop products typically come with a limited warranty against defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.