Nugeon 99-02381B Disc Brake Caliper - Front Left

Front Left Reman Brake Caliper

Nugeon 99-02381B is a remanufactured disc brake caliper for the front left position on select BMW xDrive and xi models. It includes a mounting bracket and installation hardware where applicable, along with a bleeder screw, dust boots, caliper slides, and a rust-preventative grey finish for service-ready replacement.

This reman caliper w/ installation hardware is built around an aluminum housing and a 60 mm aluminum piston for the specified BMW applications. The Nugeon reman caliper line focuses on direct-fit brake hydraulics replacement parts that restore braking function while matching the original mounting and hydraulic connection points.

Key Features

• Fits 2006-2007 BMW 525xi, front left
• Fits 2006-2007 BMW 530xi, front left
• Fits 2008 BMW 528xi, front left
• Fits 2008 BMW 535xi, front left
• Fits 2009-2010 BMW 528i xDrive, front left
• Fits 2009-2010 BMW 535i xDrive, front left
• Remanufactured disc brake caliper with bracket included
• Aluminum housing with rust-preventative finish
• Bleeder screw, dust boots, caliper slides, and hardware included
• 60 mm aluminum piston; M10-1.0 inlet and bleeder threads

Detailed Description

Nugeon 99-02381B is a front left brake caliper assembly for BMW 525xi, 530xi, 528xi, 535xi, 528i xDrive, and 535i xDrive applications. It is supplied as a remanufactured unit with the bracket installed, making it a direct replacement for the original disc brake caliper on the listed vehicles. The grey rust-preventative finish, aluminum casting, and included dust boots support a clean, serviceable brake repair.

The caliper uses a single 60 mm piston and M10-1.0 threaded inlet and bleeder connections. Package contents include brake pad installation hardware with banjo bolt and copper crush washers where applicable. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Problems This Part Can Address

• Brake fluid seepage from a worn caliper body or piston seal
• Uneven braking caused by sticking caliper slides or piston movement
• Corrosion on the original front left caliper assembly
• Soft or inconsistent brake pedal feel related to hydraulic caliper wear
• Brake drag from a caliper that no longer retracts properly

Installation Notes and Tips

Verify front left placement, bracket cast number 522, and housing cast numbers 60/30/X before installation. Confirm M10-1.0 inlet and bleeder thread sizes match the vehicle brake line and bleeding setup. After installation, bleed the brake system thoroughly and inspect all hydraulic connections for leaks before returning the vehicle to service.

Quality Assurance

Nugeon reman brake components are rebuilt for direct replacement use in brake hydraulic service. This part number, 99-02381B, is intended for the listed BMW applications and is supplied with the specified caliper hardware and hydraulic fittings noted above.