MPA Electrical BC186457 Disc Brake Caliper - Rear Left

Remanufactured Rear Left Brake Caliper

MPA Electrical BC186457 is a remanufactured disc brake caliper for rear left applications on select Hyundai Sonata and Kia Optima models. It is built with an aluminum caliper casting, a phenolic piston, and a coated silver finish for OE-style service replacement.

This caliper is remanufactured at an IATF 16949 facility with inspection steps focused on core condition, thread cleanup, seal integrity, and final assembly checks. BC186457 is a direct-fit brake hydraulics replacement for drivers servicing rear brake drag, leakage, or uneven braking on the Hyundai Sonata and Kia Optima.

Key Features

• Remanufactured disc brake caliper for rear left position
• Aluminum caliper casting with coated silver finish
• Floating caliper design with one phenolic piston
• Mounting bracket and caliper slides included
• 10.0 mm inlet thread diameter
• Mounting hardware included
• No pads included
• Fits select Hyundai Sonata and Kia Optima applications
• Part number BC186457 for ordering and cross-reference

Detailed Description

BC186457 is engineered as a remanufactured rear left disc brake caliper for 2009-2015 Hyundai Sonata and 2011-2015 Kia Optima applications listed below. The unit uses an aluminum casting, a floating caliper layout, and a phenolic piston, which is replaced during the remanufacturing process. Threads are cleaned and chased, rubber components are material-tested, and the finished caliper is inspected before release. This part cross-references Hyundai/Kia OE number 582103Q100 for the same application.

For shoppers searching for a rear left brake caliper for Hyundai Sonata, rear left brake caliper for Kia Optima with manual parking brake, or BC186457 replacement caliper, this part matches the confirmed fitment shown here. It is a practical service part for restoring hydraulic braking performance on the rear axle.

What It Helps Fix

• Brake fluid leakage at the caliper body or inlet area
• Sticking or seized rear brake caliper operation
• Uneven rear braking or pull during stops
• Corrosion-related caliper wear on the rear left side
• Brake drag caused by worn internal caliper components

Installation Notes and Tips

• Verify rear left fitment by year, model, and brake configuration before installation.
• Fits 2011-2015 Hyundai Sonata, rear left.
• Fits 2011-2012 Kia Optima, rear left.
• Fits 2013-2015 Kia Optima, rear left, with Manual Parking Brake.
• Bleed the brake system after installation and inspect all hydraulic connections for leaks.
• Transfer only approved service components as needed and confirm rotor and pad condition during repair.

Quality Assurance

MPA Electrical remanufactures brake calipers through a controlled QC process at an IATF 16949 facility. Cores with heavy pitting or severe corrosion are rejected early, aluminum units are machined for a tight inlet seal, and cast iron units receive corrosion-resistant zinc dichromate coating. Final inspection includes thread verification and go/no-go testing for OE-type performance. BC186457 is built to meet the demands of routine brake service on Hyundai Sonata and Kia Optima rear brake systems.