The Mazda OEM Part No. B61L-67XCX-V refers to a single Forward Sensing Camera (FSC) module, often described as the "Forward Camera Recognition Lane Change Assist," used in various Mazda models like the CX-5, CX-3, Mazda3, and CX-9 for safety features like Lane Departure Warning and Smart Brake Support. It's not typically a "pair" but a single unit that mounts behind the windshield near the rearview mirror, used in conjunction with other sensors and the vehicle's computer