Compatible with Nissan Frontier,Xterra ,Hardbody Pickup (D21,D21U) 4 Cyl 2.4L Engine. 1995-1997 Nissan Hardbody Pickup (D21U) Long Body XE, SE, Short Body XE, STD, XE|4 Cyl 2.4L KA24E. Air Cleaner Base Seal 16523-86G00 Leak Proof Gasket for Nissan Hardbody D21/D21U, Frontier, Xterra 2.4L 4-Cylinder Engines.