PowerStop L4644 Disc Brake Caliper - Rear Left

PowerStop Rear OE Stock Replacement Caliper Overview

The PowerStop - Rear OE Stock Replacement Caliper (Part Number L4644) is designed to provide reliable braking performance for select Buick, Chevrolet, Oldsmobile, and Pontiac models. Engineered as a direct OE replacement, this rear disc brake caliper ensures consistent stopping power and durability for vehicles like the Buick LaCrosse and Chevrolet Impala.

• Cast iron caliper casting for strength and heat resistance
• Floating caliper design with one steel piston (38.10 mm diameter)
• Includes caliper slides and mounting bracket for proper fitment
• Gray finish for corrosion resistance
• Bleeder screw thread size M10 x 1.5 for standard brake bleeding
• Compatible with Buick Allure, Chevrolet Monte Carlo, Oldsmobile Intrigue, Pontiac Grand Prix, and other models

Detailed Product Description

This PowerStop rear disc brake caliper features a cast iron construction that offers durability and effective heat dissipation under braking conditions. The floating caliper design incorporates a single steel piston with a 38.10 mm diameter, providing consistent clamping force on the brake pads. Included caliper slides and mounting bracket ensure proper alignment and secure installation on the rear brake assembly. The gray finish helps protect the caliper from corrosion, extending its service life. The bleeder screw with an M10 x 1.5 thread size allows for straightforward brake fluid bleeding during maintenance.

PowerStop - Rear OE Stock Replacement Caliper Product Line

The PowerStop - Rear OE Stock Replacement Caliper line focuses on delivering direct-fit replacement parts that meet original equipment specifications. This product line is designed to restore braking performance to factory standards without requiring modifications. Part number L4644 is part of this line, providing a reliable option for rear brake caliper replacement on various GM vehicles.

Common Applications and Issues Addressed

• Replacement for worn or leaking rear brake calipers
• Restores proper brake pad alignment and caliper movement
• Eliminates brake drag caused by seized caliper slides or pistons
• Addresses uneven brake pad wear due to caliper malfunction
• Improves rear braking response and safety on Buick, Chevrolet, Oldsmobile, and Pontiac models

Installation Notes and Tips

• Verify compatibility with your specific vehicle make and model before installation
• Ensure the brake system is properly bled using the M10 x 1.5 bleeder screw thread size
• Inspect brake pads and rotors for wear and replace if necessary during caliper installation
• Use appropriate torque specifications for mounting bracket and caliper bolts
• Check caliper slides for smooth operation before final assembly

Quality Assurance and Warranty

PowerStop manufactures this rear OE stock replacement caliper to meet or exceed original equipment standards. The cast iron construction and steel piston materials are selected for durability and consistent performance. While specific warranty details are not provided, PowerStop products typically come with manufacturer-backed quality assurance to support reliable operation in automotive brake systems.