PowerStop L5059 Disc Brake Caliper - Rear Left

PowerStop Rear OE Stock Replacement Caliper Overview

The PowerStop - Rear OE Stock Replacement Caliper (Part Number L5059) is designed to provide reliable braking performance for select GM vehicles. Engineered as a direct replacement for rear disc brake calipers, this floating caliper ensures consistent operation and durability for models like the Buick Enclave and Chevrolet Traverse.

• Floating disc brake caliper with a single 48.01 mm phenolic piston
• Constructed from lightweight aluminum casting for corrosion resistance
• Includes caliper slides and mounting bracket for proper fitment
• Gray finish designed to match OE appearance
• Bleeder screw thread size M10 x 1.0 for standard brake bleeding
• Compatible with Buick, Cadillac, Chevrolet, GMC, and Saturn rear brake systems

Product Line Details: PowerStop - Rear OE Stock Replacement Caliper

This caliper is part of the PowerStop - Rear OE Stock Replacement Caliper line, which focuses on delivering direct OE replacement parts for rear brake systems. The line emphasizes maintaining factory specifications and fitment, ensuring that the caliper integrates seamlessly with existing brake hydraulics on compatible vehicles. This approach helps preserve original braking feel and performance without requiring modifications.

Technical Description and Features

The L5059 caliper features a floating design with a single phenolic piston measuring 48.01 mm in diameter. The phenolic piston material reduces heat transfer to the brake fluid, helping to minimize brake fade under normal driving conditions. The aluminum caliper casting offers a balance of strength and weight savings, contributing to overall vehicle efficiency. Included caliper slides and mounting bracket facilitate proper installation and alignment on the rear brake assembly. The gray color finish matches the OE look, maintaining the vehicle's original appearance.

Compatible Vehicles and Applications

• Buick Enclave and Acadia Limited rear disc brake replacement
• Cadillac XTS rear brake system maintenance
• Chevrolet Traverse and Outlook rear brake caliper replacement
• GMC Acadia rear brake hydraulic system repair
• Saturn rear disc brake caliper service

Installation Notes and Tips

• Ensure brake fluid is properly bled using the M10 x 1.0 bleeder screw thread size
• Verify caliper slides are lubricated and move freely before installation
• Check mounting bracket compatibility with vehicle-specific hardware
• Do not reuse old mounting hardware unless specified by the vehicle manufacturer
• Follow manufacturer torque specifications for mounting bolts

Quality Assurance and Warranty

PowerStop manufactures this rear OE stock replacement caliper to meet or exceed OEM standards for fit, form, and function. The use of durable aluminum casting and phenolic piston materials supports long-term reliability. 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 the manufacturer for exact warranty terms.