The front upper ball joint has failed in your 1990-1997 Mazda MX5. You find out that there is not an OE replacement offered. If you go with OE parts you are forced to replace the entire control arm. The OE front upper ball joint cannot be serviced-meaning there's not a grease fitting available to have access to flush out contaminants if necessary.
Moog's line of problem solver parts target factory defects or poor original design, replacing them with a better more durable part. K500210 front upper ball joint provides the option to only replace what needs to be replaced if the ball joint is the only issue.
Suits NA 1989-1997