PowerStop S4378 Front Red Caliper Pair for Mustang/Thunderbird/Cougar

Vehicle Fitment

• 1994-1998 Ford Mustang (GT, V6)
• 1993-1997 Ford Thunderbird
• 1993-1997 Mercury Cougar (XR-7)

Fitment Notes

• Front application only; sold as a pair (left and right)
• Calipers only - does not include brake pads or rotors
• Ford applications only; not compatible with other manufacturers' vehicles sharing similar rotor sizes

Features

• High-temperature red electrostatic powder coating adds a visual upgrade behind the wheel
• Powder coating resists rust and corrosion, extending caliper life
• Direct bolt-in replacement for the stock caliper - no drilling or modification required
• 100% pressure tested to verify piston operation and prevent leaks
• Assembled with new seals, caliper guide pins, dust boots, bleeder screws, and stainless-steel pad abutment clips
• High-temperature EPDM rubber boots and premium silicone lubricant for extended longevity
• Remanufactured in PowerStop's Chicago, IL facility under consistent quality control

Specifications

• Position: Front (Pair - Left and Right)
• Type: Remanufactured performance caliper, floating design, with bracket
• Caliper Material: Cast iron
• Finish: Red electrostatic powder coat
• Warranty: 90 days / 3,000 miles
• Quantity: Sold as a pair

Included Components

• 2x Front Remanufactured Calipers with Brackets (Red Powder Coated)
• New Seals, Boots, Guide Pins, Bleeder Screws, and Pad Abutment Hardware (pre-installed)

Product Description

The PowerStop S4378 is a pair of remanufactured, red powder-coated front performance calipers for the shared Fox-4/MN12 Ford platform, covering the 1994-1998 Mustang, 1993-1997 Thunderbird, and 1993-1997 Mercury Cougar. Built for owners who want a visible upgrade behind the wheel alongside reliable braking performance, these calipers bolt directly into place of the factory units with no drilling or modification required.

Each caliper is remanufactured in PowerStop's Chicago facility using new seals, caliper guide pins, dust boots, bleeder screws, and stainless-steel pad abutment clips. The high-temperature red electrostatic powder coat is easy to clean and resists rust and corrosion, helping the calipers keep their finish and performance over time. Every pair is 100% pressure tested to confirm proper piston operation and rule out leaks before it ships.

Since these are calipers only, brake pads and rotors are not included and should be sourced separately to complete a full front brake upgrade. This kit is a popular choice for Mustang, Thunderbird, and Cougar owners looking to refresh aging factory calipers with a reliable, visually distinct replacement rather than pursuing a full big-brake conversion.