came with my jdm d15b in the manifold. but im using the z6 manifold and that o2 sensor. i have no idea if it works or not. my friend could have been filling me with ---- but he also said the cover that came on the motor that goes where the flywheel does is worth money. if so its also for sale. if u r a mod and u know none of these things are worth anything lock this thread.