Acura RDX OEM 410cc Injectors. These injectors are manufactured by Denso for Honda/Acura so expect perfect fit and performance. They are 100cc bigger than the injectors found in standard EP3/DC5 and FN2 (310cc). These are therefore ideally suited to those seeking an injector for a high powered naturally aspirated engine, or those using low boost applications. Will fit all K-series inlet manifold, all you need to do is re-pin the plugs. This is for a set of 4 injectors and plugs.