I am in the process of installing a set of F.I. longtube headers. After removing the factory manifolds I discovered that both oxygen sensors (located in the manifolds, not after cats) were cross threaded into the manifolds. The cheapest price I have found is $318.00 per sensor from Fontana Nissan. Does anyone know where I may be able to pick up a set for a little bit cheaper. Man Nissan is really proud of these things. Oxygen sensors are half as much as the d*%n headers.
