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Filter Minder® Visual / Mechanical Indicators & Gauges

Filter Minder® Single Position Indicator

Air Filter Restriction Monitoring Indicator

Single Position Indication / Threaded Mount


How It Works

The Filter Minder® Single Position Indicator features a window that turns red when the maximum air filter restriction has been reached. The filter should be replaced when the window turns red.

The Filter Minder® should be reset whenever the service indicator is checked to determine air filter restriction or when a new air filter is installed. Push the reset button at the end of the service indicator, and the position indicator will return to zero.

Filter Minder® Single Position Indicator


175501 (1/8-27 NPT)
176501 (3/8-24 Straight Thread O-Ring)
177501 (M10x1 Straight Thread O-Ring)


Mounts directly to air cleaner or air induction piping.  Adapter fittings are available.  Brackets for remote mounting are also available.  See Accessories / Related Products.


  • Vacuum Indicator
  • Locking Type
  • Operating Temperature: -40 to +250°F (-40 to 121°C)
  • Calibration: 6" - 40" H20 (1.5-10kPa) vacuum. Other calibrations available upon request.
  • Accuracy: ±10% at 15" to 40"
  • Material: Polycarbonate housing


  • Length: 1.8" (47mm)
  • Diameter: 2.0" (50mm)

A Few of Many Industries Served

Air Filtration Markets Served


  • Durable heavy-duty design

  • Large, easy-to-read window/flag

  • Multiple mounting options

  • Resistant to under-hood chemicals

  • Private labeling available


  • Tells operator when to change the air filter

  • Allows full use of filter capacity

  • Reduces down time and aids in maintenance planning

  • Helps with troubleshooting low power

  • Economical value add