Cardone 18-B4638A Disc Brake Caliper - Front Left

Overview of Cardone Unloaded Caliper w/Bracket 18-B4638A

The Cardone Unloaded Caliper w/Bracket 18-B4638A is a remanufactured disc brake caliper designed for select Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac models. Engineered with a steel piston and an oil emulsion finish, this caliper ensures reliable braking performance and corrosion resistance.

• Remanufactured disc brake caliper with bracket included
• Steel piston with 2.497 inch (63.42 mm) diameter
• Oil emulsion gray finish for durability
• Bleeder and inlet port size: M10x1.5
• Includes installation hardware kit (mounting bolts not included)
• Compatible with Buick Aurora, Cadillac DeVille, Chevrolet Impala, Pontiac Bonneville, and other models

Product Line Details: Unloaded Caliper w/Bracket

The Cardone Unloaded Caliper w/Bracket product line provides 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 offering a ready-to-install caliper assembly without brake pads, allowing for flexibility in pad selection. The 18-B4638A part number belongs to this line, ensuring compatibility and ease of installation for various GM vehicles.

Technical Description and Features

This disc brake caliper features a single steel piston with a precise 2.497 inch outer diameter, providing consistent clamping force for effective braking. The caliper’s gray oil emulsion finish offers protection against rust and wear, extending service life. Both the bleeder and inlet ports are sized M10x1.5, matching original equipment specifications for proper brake fluid flow and maintenance. The package includes the caliper, bracket, and a hardware kit, though mounting bolts are not included. This remanufactured caliper is designed to meet or exceed OEM standards for fit and function.

Compatible Vehicles and Applications

• Buick Aurora and LeSabre
• Cadillac DeVille, Eldorado, Seville
• Chevrolet Impala, Monte Carlo
• Oldsmobile Intrigue
• Pontiac Bonneville, Park Avenue, Riviera

This caliper is suitable for brake system repairs requiring a reliable replacement part that matches factory specifications for these GM models.

Common Issues Addressed by This Caliper

• Uneven or pulling brake performance during stops
• Low brake pedal caused by caliper malfunction or air in brake lines
• Brake squeal related to caliper hardware or piston issues
• Corrosion or wear on original caliper components
• Leaking or sticking caliper pistons affecting braking efficiency

Installation Notes and Tips

Installation requires proper brake fluid and adherence to OEM recommendations. The included hardware kit facilitates mounting, but mounting bolts must be sourced separately. Use silicone grease on floating caliper mounting pins to ensure smooth operation. Always bleed the brake system thoroughly to remove air and restore pedal firmness. Verify bleeder and inlet port sizes (M10x1.5) match vehicle specifications before installation.

Quality Assurance and Warranty

This Cardone remanufactured caliper undergoes rigorous testing to meet OEM standards for performance and durability. The steel piston and oil emulsion finish contribute to long service life. Installation hardware is included to support proper fitment. Warranty details are provided by Cardone and typically cover defects in materials and workmanship under normal use conditions.