This NOx outlet features a 4-pin square connector and is designed for tailpipe mounting in diesel exhaust systems.It is compatible with 11.9L and 15.0L inline-six (L6) engines used in various vehicle models including Cascadia, Coronado, International 9200 and 9900 Series, HX520, HX620, LoneStar, LT625, ProStar, T660, T680, T700, T800, T880, W900, VNL, and others, covering model years 2013–2019.The monitors nitrogen oxide (NOx) levels in the exhaust to support emissions control systems.It is engineered for use with selective catalytic reduction (SCR) and NOx storage catalyst systems that require periodic regeneration cycles.Reference part numbers include 2006244, 2872946, 4326874, 4326874RX, 904-6013, 28729846, and 5WK9 6741B.Package includes one NOx outlet.