Click to zoom in
SKU: RX-4870 | UPC: 024844094674
K&N RX-4870 Universal X-Stream Clamp-On Air Filter 2 3/4 inch Flange 6 inch Base 5 inch Top 6 1/2 inch Height
The K&N RX-4870 delivers high airflow for racing and custom intake systems with its clamp-on design fitting 2-3/4 inch flanges. The X-Stream top includes a built-in pleated filter for increased surface area and extended service life. Racers gain protection and unrestricted air intake in any condition.
Key Features
- X-Stream Top: Built-in pleated filter adds media area for more airflow and longer intervals between cleaning
- Clamp-On Design: Molded rubber flanges stretch up to 1/16 inch for secure vibration-absorbing fit on 2.75 inch pipes
- Low Restriction: Cone shape with 6 inch base tapering to 5 inch top pulls in massive air volume
- 6-1/2 inch Height: Tall profile packs deep pleats for high capacity filtration at 6.5 inches overall
- Washable Reusable: Clean with K&N kit and re-oil multi-layer cotton gauze media for repeated use
Product Notes
- Oil filter media after washing for peak performance
- Inspect regularly in dusty racing environments
- Packages in 8.25 x 8.19 x 7.72 inch box weighing 1.6 pounds
Installation Notes
- Professional installation recommended.
- Clamp to 2-3/4 inch inside diameter intake tube
- Compatible with custom aluminum or rubber pipes vibration flanges grip securely
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | All | Custom Intakes | Racing Off-Road |
Why Choose K&N?
- Proven filtration since 1969 in motorsports worldwide
- High-flow media traps dirt while feeding engines clean air
- Precision molded components endure heat vibration and abuse
Frequently Asked Questions
-
Q: What intake pipes does the RX-4870 fit?
A: Clamps to 2.75 inch inside diameter tubes stretches slightly for exact match in custom setups -
Q: What media does it use?
A: Four layers of oiled cotton gauze pleated deeply for airflow and dust holding -
Q: How do I maintain it?
A: Wash with K&N cleaner re-oil and air dry service every 50 hours racing or 100000 miles
Shipping & Handling
- Method: Ground shipping
- Availability: In stock - ships same or next business day
- Packaging: 8.25 in x 8.19 in x 7.72 in product box
- Weight: 1.6 lb (0.7 kg)
Air Filters
Air filters and intake filtration parts for cars, trucks, SUVs, Jeeps, and diesel platforms are stocked at Black Ops Auto Works. Shop direct-fit filters, drop-in replacement filters, universal clamp-on filters, cabin air filters, HVAC filters, engine breather filters, pre-filters, and velocity stacks for Hellcat, Trackhawk, TRX, Grand Cherokee, Challenger, Charger, Camaro, Corvette, Mustang, F-150, Tacoma, Tundra, BMW, and Honda platforms. Every product is filterable by year, make, model, trim, engine, and filter dimension so the correct part ships the first time. Black Ops Auto Works carries 3,397 air filter SKUs across direct-fit, universal, cabin, and pre-filter categories. What This Collection Covers Air filters remove dirt, dust, and debris from air entering the engine or cabin. This collection spans OE-style direct-fit and drop-in filters, universal cone and clamp-on filters for custom intakes, cabin and HVAC filters for interior air, engine breather filters for crankcase ...
View Air Filters Products
Air Filters - Universal Fit
Universal fit air filters for cars, trucks, and SUVs across every make and platform are stocked at Black Ops Auto Works. Shop clamp on cone filters, open element filters, carbureted filters, oval filters, velocity stack filters, reusable cotton gauze filters, and dry synthetic media filters sized by flange diameter, base, top, and height for custom intakes, fabricated setups, carburetors, and universal cold air intake kits. Every product is filterable by flange size, base and top dimensions, height, media type, and brand so the correct filter ships the first time. Black Ops Auto Works carries 908 universal fit air filter SKUs across clamp on, oval, velocity stack, and carbureted categories. What This Collection Covers Universal fit air filters are not built for a specific year, make, and model. Instead they are sized by physical dimensions, flange inside diameter, base diameter, top diameter, and overall height, so they can be matched to custom intake piping, fabricated intake t...
View Air Filters - Universal Fit Products
K&N Engineering
K&N Engineering filters and intakes for Jeep, RAM, Dodge, Chevy, Ford, Toyota, BMW, and Cadillac platforms are stocked at Black Ops Auto Works. Shop cold air intakes, Aircharger and NextGen intake systems, reusable panel filters, drop-in filters, universal clamp-on filters, oil filters, cabin filters, fuel filters, and filter cleaning kits for HEMI, Cummins diesel, EcoBoost, and LS/LT engine builds. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 1,927 K&N Engineering SKUs across intake, filtration, and maintenance categories. What This Brand Covers K&N Engineering built its reputation on reusable, high flow air filtration. This collection spans complete cold air intake systems, direct fit replacement filters, universal clamp-on filters for custom builds, and maintenance items like oil filters, fuel filters, and cabin filters. Cold Air Intakes and Intake Systems K&am...
View K&N Engineering Products