Diamond Power E542 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 88-92 Mazda 626 mx-6 turbo 2. 2l f2 sohc 12v 8v Piston rings are made with the best quality materials, all rings are chrome