This Genuine Mazda O-ring seals the top of the fuel injector where it meets the fuel rail. Key Features Genuine Mazda OE part Factory-correct fit and finish Prevents fuel leaks About Genuine Mazda Parts Genuine Mazda Parts are the same factory-engineered components installed on your MX-5 Miata when it left the assembly line. Each part is built to Mazda's original specifications for exact fitment, correct materials, and long service life, making OE replacement the most reliable way to restore or maintain your roadster to factory standards. Fitment Fits the following vehicles: 1990-1997 Mazda MX-5 Miata (NA) Mazda OE #: 8574-13-253