Cardone 2C-4638 Disc Brake Caliper - Front Left

Front Left Unloaded Brake Caliper

The Cardone 2C-4638 is a new front left disc brake caliper built for direct-fit replacement on select Buick, Chevrolet, Oldsmobile, and Pontiac applications. It uses a steel piston, zinc plating, and a silver O.E.-style finish to support consistent braking performance and straightforward installation.

Cardone’s Unloaded Caliper line focuses on replacement calipers that meet or exceed original equipment performance targets. The 2C-4638 is 100% tested and supplied as a new, zinc-coated caliper for drivers who need a dependable brake hydraulics repair on vehicles such as the Buick Century, Pontiac Grand Prix, and Oldsmobile Silhouette.

Key Features

• Direct-fit front left disc brake caliper
• Zinc plating with a silver O.E.-like finish
• Steel piston construction with 63.42 mm piston size
• Engineered to meet or exceed O.E. performance
• 100% tested for reliable operation
• No core return required
• Includes caliper, bracket, instruction sheet, and hardware kit
• Bleeder port size: M10x1.5
• Inlet port size: M10x1.5

Product Details

This Cardone Unloaded Caliper is built as a replacement disc brake caliper for the front left position on a range of GM vehicles. It is a practical choice for brake service when the original caliper is sticking, leaking, corroded, or no longer delivering even pad contact. The zinc-plated finish helps resist corrosion while maintaining an OE-style appearance, and the steel piston supports stable hydraulic response under everyday driving conditions. Part number 2C-4638 is also referenced for Buick, Chevrolet, Oldsmobile, and Pontiac brake applications.

This part cross-references GM OE numbers 18024956 and 18046200 for the same application.

What It Helps Fix

• Front brake drag caused by a sticking caliper piston
• Brake fluid leakage at the caliper body or seals
• Uneven pad wear on the front left wheel
• Corrosion-related caliper seizure on older GM vehicles
• Reduced braking response from a worn hydraulic caliper

Installation Notes

• Verify front left fitment before installation on the specific year, make, and model.
• Confirm bleeder and inlet port sizes match the vehicle brake line connections.
• Inspect pads, rotors, and brake hoses during caliper replacement.
• Bleed the brake system thoroughly after installation to remove air from the hydraulic circuit.
• Use the supplied bracket and hardware kit as directed by the service procedure.

Quality Assurance

Cardone manufactures this caliper using controlled quality processes and tests each unit before release. The result is a new replacement caliper intended for consistent braking performance in daily driving, commercial use, and performance-oriented applications.

Compatible Vehicles

• Fits 1997-2005 Buick Century, front left
• Fits 2004-2005 Buick LeSabre, front left
• Fits 2000-2005 Pontiac Bonneville, front left
• Fits 1999-2005 Pontiac Montana, front left
• Fits 1997-2004 Buick Regal, front left
• Fits 1997-2004 Oldsmobile Silhouette, front left
• Fits 2000-2003 Buick LeSabre, front left
• Fits 1997-2003 Pontiac Grand Prix, front left
• Fits 1999-2002 Oldsmobile Intrigue, front left
• Fits 1997-1999 Pontiac Trans Sport, front left
• Fits 1998 Oldsmobile Intrigue, front left, GM Brake Code JB9