PowerStop L4798A Disc Brake Caliper - Front Left

PowerStop Front OE Stock Replacement Caliper Overview

The PowerStop - Front OE Stock Replacement Caliper (Part Number L4798A) is designed to provide reliable braking performance for select GM and related vehicles. Engineered as a direct OE replacement, this floating disc brake caliper ensures consistent stopping power and durability for your Buick, Chevrolet, GMC, Isuzu, Oldsmobile, and Saab models.

• Floating caliper design with two phenolic pistons
• Constructed from lightweight aluminum casting
• Includes caliper slides and mounting bracket for ease of installation
• Gray finish for corrosion resistance
• Bleeder screw thread size M10 x 1.0 for proper brake bleeding
• Compatible with front brake systems on multiple GM and related vehicles

Detailed Product Features and Specifications

This PowerStop caliper features a floating design with two 44.96 mm phenolic pistons, which help reduce heat transfer to the brake fluid and improve overall brake system longevity. The aluminum caliper casting offers a balance of strength and weight savings, contributing to better vehicle handling and fuel efficiency. Included caliper slides and a mounting bracket simplify installation, although mounting hardware is not included. The gray finish provides corrosion resistance to extend the caliper's service life. The bleeder screw thread size is M10 x 1.0, matching OE specifications for proper brake system maintenance.

About the PowerStop Front OE Stock Replacement Caliper Line

The PowerStop - Front OE Stock Replacement Caliper line is designed to meet or exceed original equipment standards for front disc brake calipers. This product line focuses on delivering reliable, direct-fit replacements that maintain factory braking performance and fitment. The L4798A caliper is part of this line, ensuring compatibility and quality for vehicles such as the Buick Rainier, Chevrolet Trailblazer, GMC Envoy, Isuzu Ascender, Oldsmobile Bravada, Saab 9-7x, and Chevrolet SSR.

Common Applications and Problem Solving

• Replacement for worn or leaking front disc brake calipers
• Restores proper brake piston function and fluid sealing
• Addresses uneven brake pad wear caused by caliper slide issues
• Improves brake pedal feel and responsiveness
• Prevents brake fluid leaks and potential brake failure

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 and caliper slides are correctly positioned and lubricated to prevent binding. This caliper is designed as a direct OE replacement, so no modifications should be necessary for compatible vehicles. Use the correct bleeder screw size (M10 x 1.0) when servicing the brake system.

Quality Assurance and Warranty

PowerStop manufactures this caliper to meet OE specifications, using durable aluminum and phenolic materials for long-lasting performance. While specific warranty details are not provided here, PowerStop products typically come with a limited warranty against defects in materials and workmanship. Always consult the product documentation or manufacturer for exact warranty terms.