Cardone 2C-4638B Disc Brake Caliper - Front Left

Front Left Disc Brake Caliper for GM Applications

Cardone 2C-4638B is a new unloaded disc brake caliper built for direct-fit replacement on select GM vehicles. It uses zinc plating for a silver OE-like finish and is engineered for smooth, consistent braking performance in everyday driving and demanding service.

This Cardone Unloaded Caliper line focuses on direct replacement fitment, tested operation, and corrosion-resistant finish for long-term reliability. The 2C-4638B is a front left caliper for 2004-2005 Pontiac Bonneville and 2005 Buick LeSabre, Park Avenue, Chevrolet Impala, and Monte Carlo applications.

Key Features

• Brand: Cardone Unloaded Caliper
• Part number: 2C-4638B
• Front left disc brake caliper
• Zinc plating with silver OE-like appearance
• Steel piston with 2.497 in. (63.42 mm) piston size
• Bleeder port and inlet port size: M10x1.5
• Direct-fit design for straightforward installation
• 100% tested for reliable performance
• No core return required
• Installation hardware included; bracket included; pads not included

Detailed Description

Cardone 2C-4638B is a new, unloaded brake caliper designed to restore front left braking function on select Buick, Chevrolet, and Pontiac vehicles. The zinc-plated finish helps resist corrosion while maintaining a clean silver appearance that matches OE-style hardware. With a steel piston and direct-fit construction, this caliper supports consistent pedal response and dependable braking performance.

Compatible With 2005 Buick LeSabre, front left; 2005 Buick Park Avenue, front left; 2005 Chevrolet Impala, front left; 2005 Chevrolet Monte Carlo, front left; and 2004-2005 Pontiac Bonneville, front left. This part cross-references GM OE number 18046196 for the same application.

What This Caliper Helps Address

• Sticking or seized front left caliper operation
• Uneven braking caused by worn caliper components
• Corrosion on the caliper body or piston area
• Brake pull or inconsistent stopping feel at the front axle
• Service replacement needs on GM brake hydraulic systems

Installation Notes and Tips

Verify the vehicle’s brake code, wheel size, and front left application before installation. This caliper uses M10x1.5 inlet and bleeder port sizing and is supplied as an unloaded unit, so brake pads are not included. Confirm bracket and hardware fitment against the existing brake setup prior to assembly.

Quality Assurance

Cardone manufactures this caliper using controlled quality processes and tests every unit to help ensure reliable operation. The product is new, direct-fit, and built to meet or exceed OE performance expectations for the listed Buick, Chevrolet, and Pontiac applications.