Hey Nissan Altima owners! If your 2004-2006 Altima with the 3.5L V6 is throwing a check engine light for O2 sensors, or you're just doing preventative maintenance, this 4-piece kit is exactly what you need. It includes BOTH the upstream (before catalytic converter) AND downstream (after catalytic converter) sensors – two oxygen sensors and two air/fuel ratio sensors. That's all four sensors for the entire system! Part number is TA80099001P from Topcn-autoparts. These are direct-fit replacements, so they bolt right in with an M18 thread and have the correct 4 or 5-wire connectors. Saves you from buying them one at a time. They're heated for quick operation. Comes with a 1-year warranty. Perfect for a weekend DIY project if you have a socket wrench and an O2 sensor tool. Fixing these can improve your fuel economy and engine performance. Make sure your exact year and engine matches. UPC: 615311381252. Get your Altima running smoothly again!
