PowerStop L4943 Disc Brake Caliper - Rear Left

PowerStop Rear OE Stock Replacement Caliper Overview

The PowerStop - Rear OE Stock Replacement Caliper (Part Number L4943) is designed to provide reliable braking performance for select Ford, Mazda, and Mercury vehicles. Engineered as a direct OE replacement, this rear disc brake caliper ensures consistent stopping power and durability for your Ford Escape, Mazda Mariner, or Mercury Tribute.

• Compatible with Ford Escape, Mazda Mariner, and Mercury Tribute rear brake systems
• Constructed from durable cast iron for long-lasting strength
• Floating caliper design with a single 39.88 mm steel piston
• Includes caliper slides for smooth operation
• Gray finish for corrosion resistance and OEM appearance
• Bleeder screw thread size: 3/8 x 24
• Grade type: Regular for standard braking applications

About the PowerStop - Rear OE Stock Replacement Caliper Line

The PowerStop - Rear OE Stock Replacement Caliper line focuses on providing direct-fit replacement parts that meet original equipment specifications. This product line is tailored to restore the braking system to factory performance without requiring modifications. The L4943 caliper maintains the OE design with a floating caliper type and cast iron construction, ensuring compatibility and reliability for rear brake applications on compatible vehicles.

Product Details and Specifications

This disc brake caliper features a floating design with a single piston measuring 39.88 mm in diameter, made from steel for durability and heat resistance. The caliper body is cast iron, providing structural integrity and resistance to wear. Included caliper slides facilitate smooth movement during braking, helping to maintain even pad wear. The gray color finish offers corrosion protection while matching the original equipment look. Note that mounting hardware and brackets are not included with this part.

Common Applications and Problem Solving

• Replacement for worn or seized rear calipers on Ford Escape, Mazda Mariner, and Mercury Tribute
• Addresses uneven brake pad wear caused by faulty caliper slides
• Resolves brake drag or sticking issues due to piston corrosion or damage
• Restores proper brake fluid pressure and pedal feel by replacing leaking or damaged pistons
• Improves rear braking performance and safety with a direct OE replacement

Installation Notes and Tips

Ensure the brake system is properly bled after installation to remove air and maintain optimal brake performance. Since mounting hardware and brackets are not included, retain or replace existing components as needed. Verify compatibility with your specific vehicle model and year before installation. Use appropriate tools to avoid damaging the bleeder screw, which has a 3/8 x 24 thread size.

Quality Assurance and Warranty

PowerStop manufactures this caliper to meet OE standards for fit, form, and function. The cast iron construction and steel piston materials are selected for durability and consistent braking performance. While specific warranty details are not provided, PowerStop products typically adhere to industry quality controls to ensure reliability in automotive brake hydraulics.