K&N Filter Minder - Push In 2003-subaru-impreza-esi2000432 1990-1991 Lexus ES250 2

1990-1991 Lexus ES250 2

With over a year of research and development time

Turbosmart 2013+ Ford F-150 2

CSF 13-14 Volkswagen Jetta 2

MB1-SPG4 kit features a Sport pressure plate for a nice upgrade

K&N Filter Minder - Push In 2003-subaru-impreza-esi2000432 1990-1991 Lexus ES250 2A Filter Minder works as air filter service indicator that monitor air filter restriction and indicates when the air filter should be serviced. As the air filter gets dirty, the yellow position indicator moves in the clear window of the service indicator and locks at the highest point. It can be read even after the engine is turned off. The air filter should not be cleaned until the yellow position indicator reaches the red zone.