PowerStop L5058 Disc Brake Caliper - Rear Right

PowerStop Rear OE Stock Replacement Caliper Overview

The PowerStop - Rear OE Stock Replacement Caliper (Part Number L5058) is designed to provide reliable braking performance for select GM vehicles. Engineered as a direct replacement for rear disc brake calipers, this part ensures consistent stopping power and durability for your Buick, Cadillac, Chevrolet, GMC, or Saturn vehicle.

• Compatible with Buick Acadia, Acadia Limited, Cadillac XTS, Chevrolet Traverse, GMC Acadia, and Saturn Outlook models
• Constructed from lightweight aluminum casting for corrosion resistance
• Floating caliper design with a single 48.01 mm phenolic piston
• Includes caliper slides and mounting bracket for proper fitment
• Gray finish for corrosion protection and OEM appearance
• Bleeder screw thread size M10 x 1.0 for standard brake bleeding procedures

Product Line Details: PowerStop - Rear OE Stock Replacement Caliper

The PowerStop - Rear OE Stock Replacement Caliper line focuses on providing direct-fit replacement calipers that meet original equipment specifications. This product line is engineered to restore braking performance to factory standards without requiring modifications. The L5058 caliper maintains the OE design with a floating caliper type and phenolic piston material to reduce heat transfer and improve brake system longevity.

Technical Description and Features

This rear disc brake caliper features an aluminum casting that offers a balance of strength and weight savings, helping to reduce unsprung mass. The floating caliper design allows for smooth piston movement and even pad wear. The single phenolic piston, measuring 48.01 mm in diameter, resists heat absorption, which helps prevent brake fluid boiling and maintains consistent braking performance. Included caliper slides and mounting bracket ensure proper alignment and secure installation. The gray finish provides corrosion resistance, extending the caliper's service life.

Common Applications and Problem Solving

• Replacement for worn or seized rear calipers on Buick Acadia and Acadia Limited
• Restores braking efficiency on Cadillac XTS rear disc brakes
• Addresses uneven brake pad wear or sticking caliper issues on Chevrolet Traverse
• Fixes rear brake drag or noise problems on GMC Acadia and Saturn Outlook
• Improves brake pedal feel and responsiveness in affected vehicles

Installation Notes and Tips

Ensure the brake system is properly bled after installation to remove air and maintain braking performance. This caliper does not include mounting hardware, so verify existing hardware condition before installation. Use compatible brake pads and follow manufacturer torque specifications for mounting bolts. Inspect brake lines and bleeder screws for damage or corrosion during replacement.

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 material 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 manufacturer resources for exact warranty terms.