The R1 Concepts drilled and slotted brake rotor for 1991–2020 Alfa Romeo 164 applications is the front left replacement rotor finished in black. It shows drilled holes and machined slots and is specified as the front left unit for those 164 model years. Replace a worn or damaged rotor with this unit to restore the braking surface at the front left wheel position.
R1 91-20 Alfa Romeo 164 Front Left Drilled & Slotted Black Brake Rotor