Every Bosch QuietCast rotor features 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: 354mm; Compatible with select vehicles (Note: vehicle trim level/engine may affect fitment - verify specific vehicle fitment details with fit checker above): TOYOTA: 2008-22 Sequoia, 2007-21 Tundra OEM style ABS tone ring (on required applications) provides trouble free operation of Antilock Brake and Traction Control systems 4th Gen 4runner Tundra Brake Upgrade BOSCH QuietCast Kit - BC976 Brake Pad & 50011223 Rotor - FRONT 3rd Gen 4runner Tundra Brake Upgrade 16 Inch Wheels For Toyota Tundra 2007-2020 Bosch 50011319 QuietCast Premium Front Brake Rotor Aluminum/Zinc coating protection prevents rust and corrosion, extending the life of the rotor while providing a clean look for today's open wheels