Review on 4X 16600-86G00 Fuel Injectors For Nissan Pickup 2.4L 1995/D21 1990-1994 2.4L by Patrick Biletnikoff

Injectors are working great. However, I didn’t notice at first that these injectors come with only 2 of the 3 seals needed. They have the oring and "shoulder” seal where the injector plugs into the fuel rail but DO NOT have the rubber gasket on the opposite end where the injector fits into the intake manifold. One will need to reuse the old lower gasket(s) or purchase new gaskets. Replacement gaskets only include a full set that replaces all 3 gaskets (top 2 and bottom 1). If one attempts to run the vehicle without the lower gasket, the idle will be rough due to lean condition as ambient air will enter the intake manifold around the lower portion of the injector.