4x Up & Downstream Oxygen Sensor Fit Ford F-250 F-350 Super Duty 6.2L V8 2012-20 Fit for: Ford F-250 Super Duty 6.2L V8 2012-2020 Ford F-350 Super Duty 6.2L V8 2012-2020 Specifications: OE Numbers: 234-5097, 234-4576, 2345097, 2344576 Product Material: Stainless Steel Product Color: Silver Installation Position: Upstream, Downstream Functions: 1. The Upstream oxygen sensor is used to Monitor Raw Exhaust Gas to Adjust Air-fuel Ratio in Real-time, i.e., it is used to Detect Whether the Exhaust Gas Exceeds the Standard. .
