Upgrade your Nissan Altima's performance with the Replacement Downstream Oxygen Sensor (Model: 234-4381), meticulously designed for 2007-2013 2.5L and 3.5L models. This sensor features a durable silver metal body with a stainless steel nut and metallic gasket, ensuring a secure and stable fit. Its anti-oxidation threaded design and protective dust cap enhance longevity. The black wire harness and yellow OE-designed connector guarantee a direct plug-in and easy installation, eliminating the need for extra work. Engineered for reliability, this oxygen sensor boasts superior waterproof performance and double protection to prevent premature aging, ensuring precise matching to original factory specifications for consistent and dependable operation.