Wagner Brake QC1398 Disc Brake Pad Set - Rear

Wagner ThermoQuiet Rear Brake Pads

Wagner Brake ThermoQuiet QC1398 disc brake pad set is built for rear brake service on select Hyundai and Kia applications. It combines a ceramic friction formula with slotted, chamfered pad design and an integrally molded insulator to support quieter braking and consistent pedal feel.

ThermoQuiet is Wagner Brake’s quiet-operation product line, focused on reducing brake noise while maintaining OE-style fit and function for everyday driving. For rear brake pad replacement on vehicles such as the Hyundai Tucson and Kia Sportage, QC1398 delivers a practical service solution with hardware and sensor components specified in the product design.

Key Features

• Ceramic friction material for stable, everyday braking performance
• Zero-copper friction formulation
• Integrally Molded Insulator (IMI) technology for quieter operation
• Slotted and chamfered pad design
• Pad shims included
• Abutment clips included
• Mechanical pad wear sensor included
• Outer and inner friction material thickness: 0.588
• FMSI number: 8506-D1398

Detailed Description

Wagner Brake QC1398 is a rear disc brake pad set engineered for select Hyundai Tucson, Kia Cadenza, Kia Sportage, Hyundai Elantra, Kia Forte, Kia Rio, and related rear brake applications. The ThermoQuiet line uses a ceramic friction compound and an insulator design that helps reduce noise transfer at the pad backing plate. Slotted faces and chamfered edges support smoother contact characteristics during braking, while the included shims and abutment clips help complete the pad-to-hardware interface.

This part cross-references Monroe Shocks & Struts (e.g., UP-8506-X, UP8506X) for the same application. Use QC1398 when servicing rear brake systems that call for FMSI 8506-D1398 and the listed OE-style fitments.

What It Helps Address

• Brake squeal from worn rear pads
• Uneven pad contact caused by aged friction material
• Reduced braking consistency from thin or glazed pads
• Wear indicator service needs on rear brake systems
• Noise transfer in ceramic pad applications

Installation Notes and Tips

Verify rear position, caliper style, and OE pad shape before installation. This pad set is listed for rear applications only, including 2017 Hyundai Tucson rear, 2014-2017 Kia Cadenza rear, 2011-2016 Kia Sportage rear, and other listed Hyundai/Kia rear brake applications. Confirm the mechanical wear sensor routing and inspect the rotor surface, caliper hardware, and abutment points before assembly. For best results, clean the bracket contact areas and follow the vehicle manufacturer’s brake service procedure.

Quality Assurance

Wagner Brake ThermoQuiet pads are built around a ceramic, zero-copper friction formulation and IMI noise-reduction technology to support consistent service quality in rear brake replacement. QC1398 is specified with pad shims, abutment clips, and a mechanical wear sensor for the listed applications.