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SKU: RU-4870 | UPC: 024844101914
K&N RU-4870 Universal Clamp-On Air Filter 2 3/4in Flange 6in Base 5in Top 6 1/2in Height
K&N RU-4870 is a high-flow universal clamp-on air filter engineered for racing vehicles generators snowmobiles tractors and more with its 2.75 inch flange 6 inch base 5 inch top and 6.5 inch height. It fits popular models like 1999-2000 Honda Civic 2000-2005 Mazda Miata 2002-2006 Acura RSX and dozens of others. This washable reusable filter delivers increased horsepower acceleration and engine protection through premium cotton gauze media.
Key Features
- Four Layers of Protection: Multiple layers of premium cotton gauze with a tacking agent form an intricate mesh that traps dirt and contaminants while allowing maximum airflow.
- Low Maintenance: Cleans every 75000 miles or 5 years under normal highway driving for long-term reliability without frequent replacements.
- Easy Installation: Pre-oiled and ready to clamp on with flexible rubber flanges that stretch up to 1/16 inch to secure on various intake sizes.
- Performance Gains: State-of-the-art media increases airflow for better horsepower acceleration and overall engine response.
- Lifetime Durability: Rugged construction with molded pliable rubber flanges absorbs vibration and withstands harsh conditions.
Product Notes
- Filter is washable and reusable clean with K&N cleaning kit for peak performance.
- Store in a dry area when not in use to maintain oiled media.
- Ships in protective cardboard box dimensions 7.5 x 7.5 x 8 inches.
Installation Notes
- Professional installation recommended.
- Clamp directly to 2.75 inch intake flange centered design ensures secure fit.
- Compatible with rubber-backed clamps no additional hardware needed.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1999-2000 | Honda | Civic | CX |
| 1999-2000 | Honda | Civic | DX |
| 1999-2000 | Honda | Civic | EX |
| 1999-2000 | Honda | Civic | GX |
| 1999-2000 | Honda | Civic | HX |
| 1999-2000 | Honda | Civic | LX |
| 1999-2000 | Honda | Civic | Si |
| 1999 | Honda | Civic | Value Package |
| 2002-2005 | Honda | Civic | Si |
| 2003-2005 | Honda | Accord | DX |
| 2003-2007 | Honda | Accord | EX |
| 2003-2007 | Honda | Accord | LX |
| 2005 | Honda | Accord | SE |
| 2006 | Honda | Accord | LX Special Edition |
| 2006-2007 | Honda | Accord | Value Package |
| 2007 | Honda | Accord | EX-L |
| 2007 | Honda | Accord | Special Edition |
| 2002-2004 | Honda | CR-V | EX |
| 2002-2004 | Honda | CR-V | LX |
| 1997-1999 | Honda | Prelude | Base |
| 1997-1999 | Honda | Prelude | Type SH |
| 2002-2006 | Acura | RSX | Base |
| 2002-2006 | Acura | RSX | Type-S |
| 2004-2008 | Acura | TL | Base |
| 2004-2008 | Acura | TSX | Base |
| 2007-2008 | Acura | TL | Type-S |
| 2000-2005 | Mazda | Miata | Base |
| 1999 | Mazda | Miata | 10th Anniversary |
| 2000-2003 | Mazda | Miata | SE |
| 2000-2005 | Mazda | Miata | LS |
| 2003 | Mazda | Miata | Shinsen |
| 2004-2005 | Mazda | Miata | Mazdaspeed |
| 2003-2008 | Mazda | 6 | i |
| 2003-2008 | Mazda | 6 | S |
| 2006-2007 | Mazda | 6 | Mazdaspeed |
| 2002-2004 | Nissan | Altima | Base |
| 2002-2006 | Nissan | Altima | S |
| 2002-2006 | Nissan | Altima | SL |
| 2006 | Nissan | Altima | Base |
| 2015-2017 | Subaru | WRX STI | Base |
| 2015 | Subaru | WRX STI | Launch Edition |
| 2015-2017 | Subaru | WRX STI | Limited |
| 2016 | Subaru | WRX STI | Series.HyperBlue |
| 2000-2004 | Toyota | Celica | GT |
| 2000-2004 | Toyota | Celica | GTS |
| 2003-2005 | Hyundai | Tiburon | GT |
| 2005 | Hyundai | Tiburon | SE |
| 1999-2004 | Jeep | Grand Cherokee | Laredo |
| 1999-2004 | Jeep | Grand Cherokee | Limited |
| 2002 | Jeep | Grand Cherokee | Sport |
| 2004 | Jeep | Grand Cherokee | Special Edition |
| 2005-2008 | Kia | Spectra | EX |
| 2005 | Kia | Spectra | LX |
| 2005-2008 | Kia | Spectra | SX |
| 2007-2008 | Kia | Spectra | LX |
| 2005-2006 | Kia | Spectra5 | Base |
| 2007-2008 | Kia | Spectra5 | SX |
Why Choose K&N?
- Proven leader in air filtration for motorsports and street applications worldwide.
- High-flow cotton gauze media provides engine protection and power gains.
- Precision manufacturing ensures exact fit and vibration-resistant flanges.
Frequently Asked Questions
-
Q: Does this filter fit my 2004 Honda Civic Si intake?
A: Yes the RU-4870 clamps onto 2.75 inch flanges and directly fits 2002-2005 Honda Civic Si along with many other models listed. -
Q: What material is used in the filter media?
A: Premium cotton gauze in four layers treated with a proprietary oiled tacking agent for superior trapping and airflow. -
Q: What is the warranty and cleaning process?
A: Backed by a 1-Year Limited Warranty wash with K&N kit every 75000 miles no oiling required after initial pre-oiling.
Shipping & Handling
- Method: Ground shipping via UPS or FedEx
- Availability: In stock - ships same or next business day
- Packaging: Secure box 7.5 x 7.5 x 8 inches
- Weight: 1.6 lb
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