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The K&N Filter Minder screw‑in indicator monitors air filter restriction and signals when service is needed. A yellow position indicator moves in the clear window as restriction increases and locks at the highest point, remaining readable after the engine is off so cleaning is not performed until the yellow reaches the red zone. Available with a 1/8" thread option or a grommet‑mount version for versatile installations.
K&N Filter Minder - Screw In
