PowerStop L1618A Disc Brake Caliper - Front Left

Front Left OE Replacement Caliper

PowerStop L1618A is a front left disc brake caliper built as a direct OE-style replacement for select BMW applications. It is remanufactured in Chicago, pressure tested for piston operation and leak prevention, and assembled with new seals, slide pins where applicable, dust boots, bleeder screws, and stainless steel brake pad abutment clips.

PowerStop’s Autospecialty OE Replacement Brake Calipers focus on stock-fit restoration for drivers servicing BMW 3 Series and Z4 braking systems. The L1618A caliper uses a floating design with a cast iron body, steel piston, gray finish, and included mounting bracket for a straightforward front-left brake repair.

Key Features

• Direct replacement front left disc brake caliper
• Remanufactured in PowerStop’s Chicago, IL facility
• 100% pressure tested to verify piston operation and check for leaks
• Floating caliper design with one 53.92 mm steel piston
• Cast iron caliper body with gray finish
• Mounting bracket included
• New seals, dust boots, bleeder screws, and stainless steel pad abutment clips installed during assembly
• High-temperature EPDM rubber dust boots and silicone lubricant used for smoother operation

Detailed Description

PowerStop L1618A is engineered for drivers replacing a worn or leaking front left caliper on BMW models including the 1999-2000 BMW 328i, 2000 BMW 323i and 328Ci, 2001-2006 BMW 325Ci, 2001-2005 BMW 320i, 325i, and 325xi, 2001-2002 BMW Z3, and 2003-2008 BMW Z4. This part number, L1618A, is built to restore factory-style brake function without changing the original caliper layout.

The caliper is remanufactured with attention to sealing, piston movement, and corrosion-resistant service components. Its floating design, steel piston, and included bracket support OE stock replacement service on BMW 325i front left brake caliper and BMW Z4 front left brake caliper applications.

Common Repair Uses

• Replacing a leaking front left brake caliper
• Correcting uneven brake pad wear on the front axle
• Restoring proper piston movement after caliper seizure
• Addressing brake drag, sticking, or reduced braking response
• Renewing a worn OE-style caliper on BMW 3 Series and Z4 models

Installation Notes and Tips

Verify front-left fitment by year, make, and model before installation. Inspect brake pads, rotors, and flexible brake hoses during caliper replacement, and bleed the hydraulic system after installation to remove air from the circuit. The bleeder screw thread size is M8 x 1.25.

Mounting hardware is not listed as included. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Quality Assurance

PowerStop remanufactures the caliper and bracket in its Chicago facility and pressure tests each unit to confirm piston operation and help prevent leaks. New seals, slide pins where applicable, dust boots, bleeder screws, and stainless steel pad abutment clips are used during assembly for consistent service quality.