Cardone 18-B4638B Disc Brake Caliper - Front Left

Overview of Cardone Unloaded Caliper w/Bracket 18-B4638B

The Cardone Unloaded Caliper w/Bracket 18-B4638B is a remanufactured disc brake caliper designed for select Buick, Chevrolet, and Pontiac models. Engineered to meet OEM specifications, this caliper provides reliable braking performance for vehicles such as the Buick LeSabre, Chevrolet Impala, and Pontiac Bonneville.

• Remanufactured disc brake caliper with bracket included
• Steel piston with 2.497 inch (63.42 mm) outer diameter
• Gray oil emulsion finish for corrosion resistance
• Bleeder and inlet port size: M10x1.5
• Includes installation hardware kit (mounting bolts not included)
• Compatible with Buick LeSabre, Chevrolet Impala, Pontiac Bonneville, Monte Carlo, and Park Avenue

Product Line Details: Unloaded Caliper w/Bracket

The Cardone Unloaded Caliper w/Bracket product line offers remanufactured calipers that come complete with the mounting bracket and necessary hardware kit for installation. This line is designed to simplify brake system repairs by providing a ready-to-install caliper assembly without brake pads, allowing for flexibility in pad selection. The 18-B4638B part is part of this line, ensuring compatibility and ease of installation for the specified GM vehicles.

Technical Description and Features

This Cardone disc brake caliper features a single steel piston with a precise 2.497 inch outer diameter, ensuring consistent brake pad engagement. The caliper is finished with a gray oil emulsion coating that helps resist corrosion and wear over time. Both the bleeder port and inlet port are sized M10x1.5, matching OEM specifications for proper brake fluid flow and bleeding. The caliper assembly includes a bracket and a hardware kit to facilitate installation, though mounting bolts are not included. This remanufactured unit is designed to restore braking function on compatible Buick, Chevrolet, and Pontiac models.

Common Applications and Problem Resolution

• Replaces worn or leaking calipers on Buick LeSabre and Chevrolet Impala
• Addresses brake pull or uneven braking on Pontiac Bonneville and Monte Carlo
• Resolves symptoms of low brake pedal often caused by caliper issues
• Eliminates brake squeal related to caliper malfunction
• Restores proper brake fluid pressure and pedal feel on Park Avenue

Installation Notes and Tips

When installing the Cardone 18-B4638B caliper, use the included hardware kit for secure mounting. Note that mounting bolts are not included and must be sourced separately if needed. It is recommended to use silicone grease on floating caliper mounting pins to ensure smooth operation. Always use the brake fluid type specified by the vehicle manufacturer, typically DOT 3 or DOT 4. Bleed the brake system thoroughly to remove any air and restore proper pedal feel.

Quality Assurance and Warranty

This remanufactured Cardone caliper undergoes rigorous testing to meet OEM standards for fit, form, and function. The steel piston and oil emulsion finish contribute to durability and corrosion resistance. Installation hardware is included to support proper fitment. Warranty details are provided by Cardone and typically cover defects in materials and workmanship, ensuring confidence in the product's reliability.