SKU: E-3730 | UPC: 024844019899
K&N E-3730 Custom Round Air Filter 14in OD 12in ID 4in Height
The K&N E-3730 is a high-flow custom round air filter with 14 inch outer diameter 12 inch inner flange diameter and 4 inch height perfect for custom air intake setups and compatible factory air boxes. Layered oiled cotton gauze media allows more air into the engine for power gains while trapping dirt and debris. Washable and reusable it lasts the life of your vehicle with easy cleaning.
Key Features
- Horsepower Increase: More airflow design delivers noticeable power gains in custom and compatible applications
- High Airflow Filtration: Oiled cotton media balances maximum air intake with dirt-trapping efficiency
- Emissions Legal: Meets regulations in all 50 states for compliant performance upgrades
- Easy Factory Fit: Drops into many OEM air boxes or custom housings without modifications
- Lifetime Warranty: No-Hassle Lifetime Limited Warranty covers the filter for your vehicle’s life
Product Notes
- Clean every 50,000 miles under normal highway driving for peak performance
- Washable design uses K&N cleaning kit for simple maintenance
- Arrives ready to install in protective individual packaging
Installation Notes
- Professional installation recommended.
- Centered rubber flange measures 12in ID with 1.75in length for secure seal
- Compatible with factory hardware no additional parts needed
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | – | Custom Air Intake Systems | – |
| Universal | – | Factory Air Box Replacements | – |
Why Choose K&N?
- Trusted since 1969 for air filtration innovation
- Proven high-flow technology used by millions of drivers
- Engineered precision for reliable fit and long-term durability
Frequently Asked Questions
- Q: What vehicles does the E-3730 fit?
A: Built for universal custom air intakes and drops into compatible factory air boxes check your housing dimensions for 14in OD 12in ID 4in height - Q: What material is used?
A: Multi-layer oiled cotton gauze with rubber top and centered flange for airtight seal and reusability - Q: What is the warranty and cleaning schedule?
A: Backed by No-Hassle Lifetime Limited Warranty cleans every 50,000 miles with K&N kit will not void vehicle warranty
Shipping & Handling
- Method: UPS Ground or equivalent
- Availability: In stock – ships same or next business day
- Packaging: Protective box 14 x 14 x 4 inches
- Weight: 2.3 lbs
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