PowerStop S4339 Disc Brake Caliper Set - Front

Front Brake Calipers for Jeep Wrangler and Cherokee

PowerStop S4339 front brake calipers are built for Jeep owners who want a direct replacement with performance-focused details. This front high-heat red powder coated brake caliper set is compatible with select 1990-2006 Jeep Wrangler, Cherokee, Grand Cherokee, Grand Wagoneer, Comanche, and Wagoneer applications.

PowerStop remanufactures these calipers and brackets in Chicago, IL, then finishes them with a high-temperature red powder coat that helps resist rust and corrosion. The red finish also gives the front brakes a clean, visible look behind stock or custom wheels.

PowerStop Brake Caliper Line Details

The PowerStop performance brake caliper line is aimed at drivers replacing worn front calipers with a direct-fit unit that uses new internal components and pressure testing for quality control. Part number S4339 follows that approach with a floating caliper design, a 66.04 mm piston, cast iron housing, phenolic piston material, and caliper slides included where applicable.

Key Features

• Direct replacement front disc brake caliper set for select Jeep applications
• High-temperature red powder-coated finish for corrosion resistance
• Remanufactured in Chicago, IL
• 100% pressure tested to verify piston operation and check for leaks
• Assembled with new pistons, seals, slide pins where applicable, dust boots, bleeder screws, and stainless steel brake pad abutment clips
• High-temperature EPDM rubber dust boots and premium silicone lubricant for smoother operation
• Floating caliper design with one piston and cast iron construction

Detailed Description

PowerStop S4339 is a front disc brake caliper set engineered for Jeep Wrangler, Cherokee, Grand Cherokee, Grand Wagoneer, Comanche, and Wagoneer models within the listed fitment range. It bolts in place of the stock calipers and is built to restore front brake function while adding a durable red finish that stands out behind the wheels. The phenolic piston and floating caliper design support consistent operation in everyday driving and demanding conditions.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Front brake drag caused by sticking caliper slides or pistons
• Brake fluid leaks from worn seals or bleeder hardware
• Uneven braking from a failing front caliper assembly
• Corrosion on original calipers and brackets
• Reduced brake response from worn internal caliper components

Installation Notes and Tips

Verify front axle fitment against the vehicle listing before installation. Transfer or replace brake pads and related wear items as needed, and inspect hoses, rotors, and hardware for wear before reassembly. Because mounting hardware and mounting brackets are not listed as included, confirm reuse or replacement requirements for your specific Jeep Wrangler or Cherokee brake service.

After installation, bleed the brake system according to factory procedure and check for leaks, pedal feel, and caliper slide movement. This part is listed for front position applications only.

Quality Assurance

Each PowerStop S4339 caliper is pressure tested to confirm piston operation and help identify leaks before it leaves the remanufacturing process. New internal components, EPDM dust boots, and silicone lubricant are used to support smooth operation and long service life in harsh conditions.