Kwiksen O2 Oxygen Sensor 234-3098 Upstream Left For 1999-2003 Nissan Frontier Xterra 3.3L COMPATIBLE WITH OEM: 234-3098 Length (Sensor to Lead): 900mm. Wires: 4 Meet the professtional specification as OEM parts, for stable performance & durability Warranty: 1 year unlimited miles. Please check the description or use the year/make/model drop down bar and interchangeable part numbers to confirm the compatibility before purchase.