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SKU: 25-3750 | UPC: 024844012982
K&N Universal Airforce Pre-Cleaner Air Filter Foam Wrap - Round Straight - Red
The K&N 25-3750 Airforce Pre-Cleaner is a foam filter wrap that shields K&N air filters from heavy dust. This universal round straight design fits over compatible K&N filters with 3.5 inch flange ID 7.25 inch top and bottom diameter and 6 inch height. It captures dust particles first to extend cleaning intervals and maintain airflow in off-road and dusty environments.
Key Features
- Universal Foam Wrap Design: Stretches over round straight K&N air filters measuring 7.25 inches top and bottom 6 inches tall and 3.5 inches flange inside diameter for broad compatibility
- Dust Protection: Large open cell red foam traps dust and dirt before it reaches the main filter prolonging service life in extreme conditions
- Easy Cleaning Process: Wash with K&N Cleaner or soap and water then re-oil to restore performance and extend product life
- Red Oiled Foam Construction: Pre-oiled large cell foam ensures immediate use and optimal dust-holding capacity after every cleaning
- Lightweight Build: Weighs only 0.6 pounds for simple handling and no impact on vehicle performance
Product Notes
- Use only in very dusty conditions to protect K&N air filters from premature clogging
- Re-oil with K&N air filter oil after each cleaning for best results
- Box dimensions 8.25 x 8.25 x 2.81 inches for compact storage and shipping
Installation Notes
- Professional installation recommended.
- Slide over a clean dry K&N air filter matching exact dimensions no tools needed
- Ensure full coverage without bunching for even dust capture
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | Multiple | K&N Round Straight Filters | 3.5in Flange ID 7.25in Top/Bottom 6in Height |
Why Choose K&N?
- Over 60 years of air filtration innovation for motorsports and street use
- Engineered foam materials tested for durability and dust capacity
- Precision sizing guarantees secure fit on compatible K&N replacement filters
Frequently Asked Questions
-
Q: Which K&N filters does the 25-3750 fit?
A: Fits round straight K&N air filters with 3.5 inch (89 mm) flange inside diameter 7.25 inch (184 mm) top and bottom diameter and 6 inch (152 mm) height such as RC-5198 or RU-3110 -
Q: What material is the pre-cleaner made from?
A: Large open cell red foam that holds oil for enhanced dust capture and is fully washable for repeated use -
Q: What is the warranty and cleaning process?
A: Backed by K&N limited lifetime warranty clean with K&N Cleaner or mild soap and water then spray with K&N oil and allow to dry
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: 8.25 x 8.25 x 2.81 inch box
- Weight: 0.6 lb
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