1.Fitment: Maf Compatible with Toyota Avalon 9901; Avalon XL/XLS 0204; FJ Cruiser 0709; Camry 2.4L 0206; Tacoma 3.4L 9909; 4Runner 3.4L 0009; Tundra 3.4L 0010; Celica 0005; Corolla 0308; Matrix 0308; RAV4 0105; Sienna 3.0L 0106; Highlander 3.0L/3.3L 0109; Echo 0005; Yaris 0609 Lexus ES300 3.0L 9903; RX300 3.0L 9903; GS300 3.0L 0105; ES330 3.3L 0405; LS430 4.3L 0105; RX330 3.3L 0405 Scion XA 2.4L; XB 2.4L 2004; Scion TC 2.4L More 2.Reference OE Number: 2220407010, 2220407010, 2220421010, 222040D030, 3848619061, 33660557, 2220422010, 2220422010, 7450009, 7450009, 33660525, 33605231, 222040D030, 222040C020, 2220421010, 2451095, 1976030, 1580777, 5S2732, SU5225, 1974002030C, 197402260 3.Function: A mass air flow sensor calculates the oxygen flowing to your engine for the ideal airtofuel ratio and helps to increase engine efficiency by doing so. The engine throttle opens when you press on the gas, allowing more air to flow around the hot wire. An electronic chip and PCM work with the airflow signal to calculate how much fuel needs to be injected. This measurement helps keep the air to fuel ratio at the optimal level and gas mileage at as bay. 4.Features: Precision manufactured and assembled sensing elements are used to accurately measure air flow and restore a vehicle's original drivability; Qualified equipment and stateoftheart testing, coupled with rigorous quality inspection, ensures an impeccable customer experience; Fast response time and durability; and portable, easy to install and clean, and directly replaceable.