PowerStop L4357 Disc Brake Caliper - Front Left

PowerStop Front OE Stock Replacement Caliper Overview

The PowerStop - Front OE Stock Replacement Caliper (Part Number L4357) is designed to provide reliable braking performance for select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. Engineered as a direct OE replacement, this disc brake caliper ensures consistent stopping power and durability for models such as the Buick Skylark, Chevrolet Cavalier, and Pontiac Grand Am.

• Cast iron caliper casting for strength and heat resistance
• Single steel piston with a 56.90 mm diameter for effective braking force
• Floating caliper design for smooth operation and even pad wear
• Includes caliper slides for proper movement and alignment
• Gray finish for corrosion resistance and OEM appearance
• Compatible with bleeder screw thread size M10 x 1.5

Detailed Product Description

This PowerStop disc brake caliper is constructed from durable cast iron, providing the necessary strength and heat dissipation required for front brake applications. The floating caliper design allows the caliper to move laterally, ensuring even pressure distribution across the brake pads. Equipped with a single steel piston measuring 56.90 mm in diameter, this caliper delivers consistent braking force to maintain vehicle control and safety. The included caliper slides facilitate smooth caliper movement, reducing uneven pad wear and extending component life. Finished in gray, the caliper resists corrosion while maintaining an OEM look.

The PowerStop - Front OE Stock Replacement Caliper product line focuses on delivering direct-fit replacements that meet original equipment specifications. This ensures compatibility and performance consistency for vehicles requiring front disc brake calipers, such as the Chevrolet Corsica and Oldsmobile Cutlass Calais.

Compatible Vehicles and Applications

• Buick Skylark and Sunbird
• Chevrolet Cavalier, Corsica, and Sunfire
• Oldsmobile Cutlass Calais
• Pontiac Achieva and Grand Am

Common Issues Addressed by This Caliper

• Brake drag caused by seized or sticking calipers
• Uneven brake pad wear due to faulty caliper slides
• Reduced braking efficiency from piston corrosion or damage
• Brake fluid leaks from worn piston seals
• Noise and vibration related to caliper malfunction

Installation Notes and Tips

When installing the PowerStop L4357 caliper, ensure the brake system is properly bled to remove air and maintain hydraulic pressure. Since mounting hardware and brackets are not included, reuse existing components if they are in good condition or source replacements separately. Verify the bleeder screw thread size (M10 x 1.5) matches your vehicle’s specifications for compatibility. Proper lubrication of caliper slides is recommended to promote smooth operation.

Quality Assurance and Warranty

PowerStop manufactures this front OE stock replacement caliper to meet or exceed OEM standards for fit, form, and function. The use of cast iron and steel materials ensures durability under normal operating conditions. While specific warranty details are not provided, PowerStop products typically undergo rigorous quality control to ensure reliability and performance in brake hydraulics applications.