PowerStop L4730 Disc Brake Caliper - Front Right

PowerStop Front OE Stock Replacement Caliper Overview

The PowerStop - Front OE Stock Replacement Caliper (Part Number L4730) is engineered to provide reliable braking performance for select GM vehicles. Designed as a direct replacement for front disc brake calipers, this part ensures consistent stopping power and durability for models like the Chevrolet Silverado 2500 HD and GMC Sierra 3500.

• Cast iron caliper casting for strength and heat resistance
• Floating caliper design with two phenolic pistons (56.90 mm diameter)
• 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

Product Line Details: PowerStop - Front OE Stock Replacement Caliper

This PowerStop product line focuses on front OE stock replacement calipers that meet original equipment specifications. The L4730 caliper is designed to replicate the fit, form, and function of factory-installed components, making it suitable for professional repairs and maintenance on vehicles such as the Cadillac DeVille and Hummer H2. This line emphasizes durability and compatibility with regular grade brake systems.

Technical Description and Features

The L4730 caliper features a cast iron body that offers robust structural integrity and excellent heat dissipation during braking. Its floating caliper design allows for smooth piston movement, aided by included caliper slides and a mounting bracket to ensure proper alignment. The two phenolic pistons, each measuring 56.90 mm in diameter, reduce heat transfer to the brake fluid, helping to prevent vapor lock and maintain consistent brake feel. The gray finish provides corrosion resistance while maintaining an OE look. This caliper is compatible with a bleeder screw thread size of M10 x 1.5, facilitating standard brake bleeding procedures.

Compatible Vehicles and Applications

• Cadillac DeVille and DTS models requiring front disc brake calipers
• Chevrolet Silverado 1500 HD, 2500, and 3500 series trucks
• GMC Sierra 1500 HD, 2500, 3500, and Yukon XL 2500
• Hummer H2 front brake system replacements
• Express and Savana 2500/3500 vans

Common Issues Addressed by This Caliper

• Worn or leaking front disc brake calipers causing brake fluid loss
• Uneven brake pad wear due to caliper piston or slide malfunction
• Reduced braking efficiency from corroded or damaged caliper bodies
• Brake drag caused by seized caliper pistons
• Brake noise and vibration related to faulty caliper components

Installation Notes and Tips

Ensure the brake system is fully depressurized before removing the old caliper. This caliper includes the mounting bracket and caliper slides but does not include mounting hardware, so retain or replace bolts as needed. Verify the bleeder screw thread size (M10 x 1.5) matches your vehicle’s specifications. After installation, bleed the brake system thoroughly to remove air and restore proper brake pedal feel. Inspect brake pads and rotors for wear and replace if necessary to ensure optimal performance.

Quality Assurance and Warranty

PowerStop manufactures the L4730 caliper to meet or exceed OEM standards for fit and function. The cast iron construction and phenolic pistons are selected for durability and heat resistance. While specific warranty details are not provided here, PowerStop products typically come with a limited warranty against defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.