Click to zoom in
SKU: RU-3120 | UPC: 024844010964
K&N RU-3120 Universal Clamp-On Air Filter
K&N RU-3120 delivers high-flow filtration for racing vehicles radio-controlled cars generators snowmobiles tractors and custom intakes with 2.75 inch (70mm) flange diameter 1.5 inch (38mm) flange length and 5 inch (127mm) filter length and height. Molded rubber flanges absorb vibration stretch up to 1/16 inch (1.5mm) and clamp securely for reliable seal. Increases airflow for more horsepower acceleration and engine response while trapping contaminants.
Key Features
- 4 Layers of Protection: Multiple layers of premium cotton gauze with tacking agent form intricate mesh to block trap dirt dust and harmful particles
- Clean Once Every 5 Years: Lasts 75000 miles under normal highway driving (5 years at 15000 miles per year) washable reusable design saves money
- Easy Installation: Pre-oiled ready-to-use clamp-on style installs quickly delivers performance gains without tools or modifications
- Engineered Power: High-flow media boosts horsepower acceleration and throttle response across RPM range
- Rugged Construction: Durable premium materials withstand vibration heat and abuse built to last a lifetime
Product Notes
- Flanges stretch slightly to fit in-between intake sizes vibration absorption prevents loosening
- Wash with K&N cleaner re-oil for repeated use maintains filtration efficiency
- Weight 1.1 pounds package dimensions 7.6 x 6.1 x 5.9 inches
Installation Notes
- Professional installation recommended.
- Clamp directly onto 2.75 inch (70mm) intake pipe no adapters needed
- Rubber flange ensures airtight seal compatible with straight round intakes
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | Various | Racing Vehicles | N/A |
| Universal | Various | Generators | N/A |
| Universal | Various | Snowmobiles | N/A |
| Universal | Various | Tractors | N/A |
| Universal | Various | Radio-Controlled Cars | N/A |
Why Choose K&N?
- Decades of engineering high-performance air filters trusted by racers worldwide
- Reusable design cuts replacement costs protects engine longer than paper filters
- State-of-the-art media proven to flow more air without sacrificing filtration
Frequently Asked Questions
-
Q: Will K&N RU-3120 fit my custom intake setup?
A: Fits any 2.75 inch (70mm) diameter straight round air intake on racing equipment generators snowmobiles tractors or performance builds flanges stretch for perfect seal -
Q: What filter media does it use?
A: Four layers of oiled cotton gauze treated with proprietary tackifier traps fine particles allows maximum airflow washable for lifetime use -
Q: What warranty covers this filter?
A: Backed by 1-Year Limited Warranty covers defects in materials workmanship under normal use
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Protective box 7.6 x 6.1 x 5.9 inches
- Weight: 1.1 pounds
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