[Vehicle Fitment]: Compatible with Toyota Sienna 2004-2006 V6 3.3L 3MZFE, Sienna 2007-2010 V6 3.5L 2GRFE --- Downstream Front and Rear [Reference Number]: 250-24645, 250-24420, 89465-68050, 89465-0E020, 89465-08090 [Specification]: ① Wire Quantity: 4; ② Wiring Harness Length (mm): 266(Downstream Front); 471(Downstream Rear); ③ Connector Shape: Square; ④ Terminal Quantity: 4; ⑤ Terminal Gender: Male; ⑥ Sensor Type: Heated; ⑦ Mounting Type: Threaded; ⑧ Package Quantity: 2x Oxygen Sensor; ⑨ Packaging Type: Box [Quality Construction]: Manufactured from premium materials for a long lifespan; Quick and easy installation, requiring no special tools [Buy with Confidence]: A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted O2 Oxygen Sensor. We offer a wide variety of automotive accessory categories, ensuring that you can hit the road with peace of mind