The K&N Filter Minder is an air filter service indicator that monitors 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.

This nifty device is very useful for knowing if the filter your using is either dirty/restricting or just plain to small. Such a small thing as this could save a lot of time, energy and money knowing if the filter your using is restricting your power! Such as Dyno day!

There are two options available:
85-2444 with a 1/8th in thread
85-2445 with the push in bung.

Can be either fitted into a factory air box or into the inlet pipe just
before the turbo of a turbocharged car!

You can reset the position of the indicator to zero by simply pushing the yellow reset at the end of the service indicator.

Product Specifications
Length 3.344 in (85 mm)
Width 1.969 in (50 mm)
Material Used Polycarbonate

Product Box Height 1.5 in (38 mm)
Product Box Length 12 in (305 mm)
Product Box Width 9.06 in (230 mm)
Weight 0.2 lb (0.1 kg)