PowerStop L1138 Disc Brake Caliper - Front Right

PowerStop Front OE Stock Replacement Caliper Overview

The PowerStop - Front OE Stock Replacement Caliper (Part Number L1138) is designed to provide reliable braking performance for select BMW models. Engineered as a direct replacement, this floating disc brake caliper ensures consistent stopping power and durability for your vehicle.

• Compatible with BMW 318i, 318is, 325e, 325es, 325i, 325is, and 325iX models
• Constructed from durable cast iron for long-lasting strength
• Includes caliper slides and mounting bracket for proper fitment
• Single steel piston with a diameter of 47.98 mm for effective brake pressure
• Gray finish with M7 x 1.0 bleeder screw thread size
• Floating caliper type designed for smooth operation

About the PowerStop - Front OE Stock Replacement Caliper Line

The PowerStop - Front OE Stock Replacement Caliper line focuses on providing direct OE-style replacements that maintain factory specifications. This product line is tailored to meet the exact fit and function requirements of original equipment, making it suitable for drivers seeking dependable brake hydraulics without modification. The L1138 caliper is part of this line, ensuring compatibility and performance for your BMW brake system.

Product Details and Specifications

This disc brake caliper features a cast iron construction that offers durability and resistance to wear under normal driving conditions. The floating caliper design allows for even pad wear and consistent braking force. It includes one steel piston with a precise diameter of 47.98 mm, which helps maintain proper hydraulic pressure during braking. The caliper slides are included to facilitate smooth movement, and the mounting bracket is provided to ensure secure installation. The gray color finish matches OEM appearance, and the bleeder screw thread size is M7 x 1.0 for compatibility with standard brake bleeding tools.

Common Applications and Problem Solving

• Replacement for worn or seized front disc brake calipers on compatible BMW 3 Series models
• Addresses uneven brake pad wear caused by faulty caliper slides or pistons
• Resolves brake drag or sticking issues due to caliper malfunction
• Restores proper hydraulic pressure for consistent braking response
• Improves brake system reliability after corrosion or damage to original calipers

Installation Notes and Tips

When installing the PowerStop L1138 caliper, ensure the brake system is properly bled to remove air and maintain hydraulic integrity. Verify that the mounting bracket is securely fastened and that caliper slides move freely to prevent uneven pad wear. Use compatible brake pads and follow manufacturer torque specifications for all fasteners. Note that mounting hardware is not included and should be reused or replaced as needed.

Quality Assurance and Warranty

PowerStop calipers are manufactured to meet or exceed OEM standards for fit and function. The L1138 caliper undergoes quality control inspections to ensure durability and performance. While specific warranty details are not provided here, PowerStop products typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.