PowerStop L4773A Disc Brake Caliper - Front Right

PowerStop Front OE Stock Replacement Caliper Overview

The PowerStop - Front OE Stock Replacement Caliper (Part Number L4773A) is designed to provide reliable braking performance for select Buick, Oldsmobile, and Pontiac vehicles. Engineered as a direct OE replacement, this disc brake caliper ensures compatibility and consistent operation for models like the Buick Rendezvous, Pontiac Aztek, Montana, and Oldsmobile Silhouette.

• Cast iron caliper casting for durability
• Single 64.01 mm phenolic piston for efficient heat resistance
• Floating caliper design with included caliper slides
• Gray finish for corrosion resistance
• Includes mounting bracket for secure installation
• Bleeder screw thread size M10 x 1.0 for proper brake fluid maintenance

Detailed Product Description

This PowerStop front disc brake caliper features a cast iron construction that offers strength and longevity under typical driving conditions. The floating caliper design allows for smooth piston movement, which helps maintain even brake pad wear. Equipped with a single phenolic piston measuring 64.01 mm in diameter, this caliper resists heat transfer to the brake fluid, reducing the risk of brake fade. The gray finish provides a protective layer against corrosion, extending the caliper’s service life. Caliper slides are included to ensure proper alignment and movement during braking, and the mounting bracket is supplied to facilitate a secure fit on compatible vehicles.

About the PowerStop - Front OE Stock Replacement Caliper Line

The PowerStop - Front OE Stock Replacement Caliper line is designed to meet original equipment specifications for front disc brake calipers. This product line focuses on delivering reliable, direct-fit replacements that maintain factory braking performance and safety standards. The L4773A caliper is part of this line, offering a balance of durability and compatibility for select GM vehicles.

Common Applications and Problem Solving

• Replacement for worn or leaking front disc brake calipers
• Addresses uneven brake pad wear due to caliper slide issues
• Resolves brake fluid contamination from piston seal failure
• Improves braking consistency on Buick Rendezvous, Pontiac Aztek, Montana, and Oldsmobile Silhouette
• Restores proper brake pedal feel and stopping power

Installation Notes and Tips

Ensure the brake system is properly bled after installation to remove air and maintain braking efficiency. Verify that the mounting bracket is securely fastened and that caliper slides move freely to prevent uneven pad wear. Use the correct bleeder screw size (M10 x 1.0) for brake fluid maintenance. This caliper does not include mounting hardware, so reuse existing hardware or acquire new components as needed.

Quality Assurance and Warranty

PowerStop manufactures this caliper to meet or exceed OEM standards for fit, form, and function. The cast iron construction and phenolic piston material contribute to long-term durability. While specific warranty details are not provided here, PowerStop products typically come with a limited warranty against defects in materials and workmanship. Consult product documentation or manufacturer resources for exact warranty terms.