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MSRP $50.39 36.5% Off
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K&N 85-2445

Performance Products > Filter Minder, Push in
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   5.0 out of 5 stars   7 Customer Reviews
  • Monitors your K&N filter for air flow
  • Indicates when the filter should be cleaned
  • Easy to read, even after engine is off
  • Available with 1/8 In. thread or grommet mount
K&N filter minders work as air filter service indicators that monitor air filter restriction and indicate 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.


Product Specifications

Length3.344 in (85 mm)
Material UsedPolycarbonate
Product Box Height1.5 in (38 mm)
Product Box Length12 in (305 mm)
Product Box Width9.06 in (230 mm)
Product StyleAccessories
Weight0.2 lb (0.1 kg)
Width1.969 in (50 mm)

K&N 85-2445 Product Reviews

Monday, November 30, 2015 - Part 85-2445
Easy easy install.

Jim C.
Salinas, California
Wednesday, April 15, 2015 - Part 85-2445

Chuck Purdy
Tuesday, January 27, 2015 - Part 85-2445
Better than guessing if your filter needs cleaning or replacing.

Tuesday, January 13, 2015 - Part 85-2445
Added one of these to my factory air box on my 2014 Mazda 3. No guessing on when to replace or clean my air filter. I like that K&N's version of the filter minder shows red at 10 h2O vs 15 or, 25. I did find it hard to find a 11/16 dril bit though. Lukly I remembered I had a Uni-Bit in my tool box.

Sunday, November 30, 2014 - Part 85-2445
Easy to install and read the indicator.

Bakersfield, California
Wednesday, March 12, 2014 - Part 85-2445
I put this on my stock OEM housing with my K&N Air flter replacement for OEM Filter. Works great!!!I Improvised and just drilled a hole on my Stock OEM Filter Housing and adapted this. Used a similar set up years ago in trash trucks in Dad's Trash Buisness on Mack,Diamond Reo,GMC Generals,and Autocar Heavy Duty trucks!!!

Robert Goudin
Eustis , Florida
Tuesday, November 19, 2013 - Part 85-2445
Works as designed, fell off filter for unknown reason, just needed a replacement.

Grant Gossett