[PRECISION BALANCED] - All QuietCast rotors are factory mill precision balanced, which disperses the weight evenly, and allows for smooth, safe stops with no pedal pulsation [ENHANCED PERFORMANCE] - Superb performance ensured by OEM style vane configuration that provides more efficient heat dissipation, reduced vibration for quieter operation, and extended rotor life [RUST AND CORROSION RESISTANT] - Aluminum/Zinc coating protection prevents rust and corrosion, extending the life of the rotor while providing a clean look for today's open wheels [ABS AND TRACTION CONTROL READY] - OEM style ABS tone ring (on required applications) provides trouble free operation of Antilock Brake and Traction Control systems [AUTHENTIC BOSCH] - Bosch QuietCast rotors feature an engraved discard thickness that lets you know when the rotor has reached its useful life, and an "on-the-part" Bosch brand name, so you can be confident you are receiving an authentic Bosch product FRONT: 281.4mm; Compatible with select vehicles (Note: vehicle trim level/engine may affect fitment - verify specific vehicle fitment details with fit checker above): FORD: 1990-91 Country Squire, 1992-94 Crown Victoria; LINCOLN: 1991-94 Town Car Compatible with (continued): MERCURY: 1990-91 Colony Park, 1992-94 Grand Marquis