PowerStop L4639 Disc Brake Caliper - Front Right

PowerStop Front OE Stock Replacement Caliper Overview

The PowerStop - Front OE Stock Replacement Caliper (Part Number L4639) is designed to provide reliable braking performance for select Buick, Oldsmobile, and Pontiac vehicles. Engineered as a direct OE replacement, this disc brake caliper ensures consistent stopping power and durability for models like the Buick LeSabre, Pontiac Grand Prix, and Oldsmobile Intrigue.

• Cast iron caliper casting for strength and heat resistance
• Single steel piston with a 63.50 mm diameter for effective braking force
• Floating caliper design for smooth operation and even pad wear
• Includes caliper slides and mounting bracket for proper fitment
• Gray finish to match OE appearance
• Compatible with bleeder screw thread size M10 x 1.5
• Grade type: Regular for standard braking applications

About the PowerStop Front OE Stock Replacement Caliper Line

The PowerStop - Front OE Stock Replacement Caliper line focuses on delivering direct-fit replacements that meet original equipment specifications. This product line is tailored to maintain factory performance and fitment, making it suitable for drivers seeking a dependable caliper without modifications. The L4639 caliper is part of this line, ensuring compatibility and quality for front brake systems on various GM vehicles.

Detailed Product Description

This PowerStop disc brake caliper features a cast iron construction that offers durability and resistance to heat generated during braking. The floating caliper design allows the caliper to move laterally, ensuring even pressure distribution across the brake pads. Equipped with a single steel piston measuring 63.50 mm in diameter, it provides consistent clamping force for effective stopping power. The caliper slides are included to facilitate smooth movement, and the mounting bracket is supplied to secure the caliper properly. The gray color finish aligns with the original equipment look, maintaining the vehicle's factory appearance.

Compatible Vehicles and Common Applications

• Buick models including LeSabre, Century, Regal, and Montana
• Oldsmobile models such as Intrigue and Silhouette
• Pontiac models including Grand Prix, Bonneville, and Trans Sport
• Designed for front brake systems requiring a floating disc brake caliper
• Ideal for replacing worn or damaged front calipers to restore braking performance

Installation Notes and Tips

• Ensure the mounting bracket is properly aligned before securing the caliper
• Bleeder screw thread size M10 x 1.5 requires compatible tools for brake bleeding
• Caliper slides are included; inspect and lubricate slides during installation for optimal movement
• Verify piston diameter matches vehicle specifications to ensure proper fit
• Mounting hardware is not included and should be reused or replaced as needed

Quality Assurance and Warranty

PowerStop manufactures this caliper to meet OE standards for fit and function. The cast iron construction and steel piston materials are selected for durability and consistent performance. While specific warranty details are not provided, PowerStop products typically adhere to industry quality controls to ensure reliability in braking applications.