PowerStop L5545 Disc Brake Caliper - Rear Left or Rear Right

PowerStop Rear OE Stock Replacement Caliper Overview

The PowerStop - Rear OE Stock Replacement Caliper (Part Number L5545) is designed to provide reliable braking performance for select Buick, Cadillac, Chevrolet, and GMC vehicles. Engineered as a direct OE replacement, this rear disc brake caliper ensures consistent stopping power and durability for models like the Equinox, LaCrosse, Malibu, Regal Sportback, Regal TourX, Terrain, and XT4.

• Cast iron caliper casting for strength and heat resistance
• Floating caliper design with one steel piston (38mm diameter)
• Includes caliper slides and mounting bracket for proper fitment
• Gray finish for corrosion resistance
• Compatible inlet and bleeder screw thread size: M10 x 1.0
• Grade type: Regular for standard braking applications

Detailed Product Description

This PowerStop rear disc brake caliper features a durable cast iron construction that withstands the rigors of daily driving and heat generated during braking. The floating caliper design incorporates a single 38mm steel piston, providing smooth and consistent brake pad engagement. Included caliper slides and mounting bracket ensure proper alignment and secure installation on compatible vehicles. The gray finish offers corrosion resistance to extend the caliper’s service life. Thread sizes for the inlet and bleeder screw are standardized at M10 x 1.0, matching OE specifications for easy integration with existing brake lines and bleeding systems.

The PowerStop - Rear OE Stock Replacement Caliper product line focuses on delivering direct-fit replacements that meet original equipment standards. This line is intended for drivers seeking dependable brake hydraulics without modification, maintaining factory performance and safety levels.

Compatible Vehicles and Applications

• Buick LaCrosse, Regal Sportback, Regal TourX
• Cadillac XT4
• Chevrolet Equinox, Malibu
• GMC Terrain

• Replaces worn or leaking rear disc brake calipers
• Addresses uneven brake pad wear or sticking caliper issues
• Restores proper brake pedal feel and stopping power
• Eliminates brake fluid leaks from damaged pistons or seals
• Improves rear brake performance and safety

Installation Notes and Tips

Ensure the brake system is fully depressurized before removing the old caliper. This caliper includes the mounting bracket and slides but does not come with additional mounting hardware, so verify you have the necessary bolts and tools. Use compatible brake fluid and bleed the brake system thoroughly after installation to remove air and ensure optimal brake response. Check thread sizes (M10 x 1.0) for inlet and bleeder screws to confirm compatibility with your brake lines and bleeding equipment.

Quality Assurance and Warranty

PowerStop manufactures this rear OE stock replacement caliper to meet or exceed original equipment specifications. The cast iron construction and steel piston materials are selected for durability and consistent performance. While specific warranty details are not provided here, PowerStop products typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.