Enhance your Mitsubishi Express SJ's performance with our brand new pre-cat oxygen sensor. Specifically designed for the 2003 - 2006 models with the 2.0L 4G63 engine, this OEM quality sensor features four wires for optimal efficiency. Enjoy peace of mind with a 2-year Australian warranty, ensuring you're covered for the long haul. Upgrade your vehicle today and experience smoother driving and improved fuel efficiency.