This catalytic converter is designed to fit 2011-2016 Hyundai Sonata 2.4L. It is made by AP Exhaust and includes bolts and a seal for installation. The oxygen sensor location is post catalyst and it features 100% accuracy of fit. This item is perfect for those looking to upgrade their car's exhaust and emission system. Its placement on the vehicle is in the exhaust, lower, and rear. With its high-quality construction and compatibility with various Hyundai Sonata models, this catalytic converter is a reliable choice for anyone looking to improve their car's performance.