Diamond Power Nissan Frontier 2.4L KA24DE DOHC Piston Rings 2 year warranty (this product must be installed by a certified professional mechanic) Same day shipping when purchased before 3pm est Our products are tested and meet or exceed oem performance requirements Fits 02-04 Nissan x-terra frontier 2. 4l 2389cc ka24de dohc 16v l4 Piston rings are made with the best quality materials, all rings are chrome