PowerStop L4988 Disc Brake Caliper - Front Left

PowerStop Front OE Stock Replacement Caliper Overview

The PowerStop - Front OE Stock Replacement Caliper (Part Number L4988) is designed to provide reliable braking performance for select Buick and Chevrolet models. Engineered as a direct replacement for front disc brake calipers, this component ensures consistent stopping power and durability.

• Compatible with Buick Impala, Impala Limited, Lucerne, and Chevrolet Monte Carlo
• Constructed from durable cast iron caliper casting material
• Floating caliper design with two steel pistons (44.96 mm diameter)
• Includes caliper slides and mounting bracket for proper fitment
• Gray finish with M10 x 1.5 bleeder screw thread size
• Grade type: Regular for standard braking applications

Detailed Product Description

This PowerStop front disc brake caliper is built with a cast iron body, providing strength and resistance to wear under normal driving conditions. The floating caliper design allows for smooth piston movement, aided by the included caliper slides, which help maintain proper alignment and reduce uneven pad wear. Featuring two steel pistons with a diameter of 44.96 mm, this caliper delivers balanced braking force to the front wheels. The gray finish offers corrosion resistance while maintaining a factory appearance. The mounting bracket is included to facilitate installation, and the bleeder screw thread size of M10 x 1.5 ensures compatibility with standard brake bleeding tools.

About the PowerStop - Front OE Stock Replacement Caliper Line

The PowerStop - Front OE Stock Replacement Caliper line focuses on providing direct-fit replacement parts that meet original equipment specifications. This product line is designed to restore braking performance to factory standards without requiring modifications. The L4988 caliper is part of this line, offering a reliable option for front brake system repairs on compatible Buick and Chevrolet 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 reduced braking efficiency caused by piston corrosion or damage
• Fixes brake fluid leaks from damaged bleeder screws or seals
• 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 performance. Verify compatibility with your specific Buick or Chevrolet model before installation. Use appropriate tools for the M10 x 1.5 bleeder screw to avoid damage. Although mounting brackets and caliper slides are included, mounting hardware is not provided and should be reused or replaced 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 steel pistons contribute to long service life under regular driving conditions. Warranty information is available through PowerStop and may vary by distributor or retailer.