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Filter Wraps > Air Filter Foam Wrap

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25-1691
 
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The K&N Airforce Pre-Cleaner is a specially designed foam filter wrap made to extend the service interval of your K&N Filtercharger when used in very dusty conditions. The Airforce Pre-Cleaner is designed to be cleaned with K&N Cleaner or soap & water. Red colored Airforce pre-cleaners air oiled with K&N air filter oil after they are cleaned. They are made from large, open cell foam. Gray colored Airforce pre-cleaners do not use oil. They have smaller foam cells.

[More Information on AirForce Foam Wraps]
  • Extends service interval of your filter in very dusty conditions
  • Large open cell foam construction stops 90% of dirt with very low air restriction
  • Cleanable with K&N Filter Cleaner or soap and water
  • This product wraps your air filter with an additional pre-filter
Available Information
Installation Instruction Sheet
25-1691 Vehicle Applications


Part 25-1691 Product Specifications
Product Style: Filter Wrap - Oval Straight
Wrap Type: Airforce Pre-Cleaner
Color: Red
Material Used: Foam
Inside Width: 4.25 in (108 mm)
Inside Length: 5.5 in (140 mm)
Height: 2 in (51 mm)
Closed Top: Yes
Package Contents: 1 Airforce Pre-Cleaner Wrap
Package Quantity: 1
Air Filter Shape: Oval
Weight: 0.01 lb (0 kg)
Product Box Length: 8.5 in (216 mm)
Product Box Width: 2.75 in (70 mm)
Product Box Height: 10.5 in (267 mm)


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Customer Feedback      Be the first to review part 25-1691

I use K&N air and oil filters on all my personal vehicles, currently being: Suzuki GSXR 1000, Cagiva Raptor 1000, Jeep Cherokee and Nissan Stagea. To keep them running in top order I won't go past K&N!!
Joel, New Zealand
I wish I had replaced the air filters MUCH SOONER... I own two Suzuki SX4 hatchbacks 2013's. Both cars got the same MPG. At best I was hoping for 2 possibly 2.5 MPG increase. The first tank after replacing the filters according to the on board computer I went from 25.5 to 33.8 MPG I was more than pleased. However after filling up with 7.5 gallons of gas, I had gone 279 miles. That works out to around 37 MPG!!! Nothing else has been changed. In the past when getting close to 250 MAX miles on a tank I would be looking for gas. Both cars have the same type of improvement in MPG. The acceleration is much better in both vehicles as well> There is a response now when pressing on the gas pedal. Money well spent and ROI is a no brainier as I'm already showing a major savings on gas.
Nick Darchik, Milford New Hampshire
I replaced my factory Suzuki air filter with this K&N air filter and I noticed the difference immediately when the front end came up at the power band in third gear. This filter really does increase performance.
BDizzle, Maryland