GENUINE NISSAN INFINITI RADIATOR OVERFLOW TANK CAP. XTERRA (4.0L VQ40DE). PATHFINDER (4.0L VQ40DE, 5.6L VK56DE). FRONTIER (4.0L VQ40DE, 2.5L QR25DE). NISSAN PART #21430-1P111 / QTY:1. The product has not been used, installed, disassembled, or tested.