Boost performance with the K&N RU-2690 Round Tapered Universal Air Filter. Its 1.75 in. flange fits various engines, making it ideal for generators and snowmobiles. This washable filter features a durable rubber flange that absorbs vibrations. Rated for 75,000 miles, it comes pre-oiled for easy installation.
Enjoy enhanced airflow and
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Part Brand: K&N
Part Number: RU-2690
Vehicle Fitment
- Universal — not vehicle-specific; designed for a wide range of applications including racing vehicles, small engines, generators, snowmobiles, and tractors
Fitment Notes
- Clamp-on design fits carburetor or intake necks matching the 1.75 in. flange diameter; rubber flange can stretch up to 1/16 in. to accommodate in-between sizes
- As a universal-fit part, some applications may require minor modification to achieve a proper fit
- Not a direct factory drop-in for any specific make or model — match your carburetor throat OD to the filter's ID before ordering
Features
- Four layers of premium cotton gauze treated with a specially designed tacking agent
- Intricate filter media mesh designed to block and trap harmful contaminants
- Compact round tapered (conical) design suited to small-displacement engines and tight-clearance applications
- Ultra-strong molded pliable rubber flange absorbs vibration for a secure attachment
- Flange can stretch up to 1/16 in. (1.5mm) to fit in-between sizes
- Washable and reusable, rated for approximately 75,000 miles between cleanings
- Pre-oiled and ready for easy installation
- Backed by a 1-year limited warranty
Specifications
- Shape: Round Tapered (Conical)
- Filter Material: Cotton gauze
- Flange (Inside) Diameter: 1.75 in.
- Base Outside Diameter: 3 in.
- Top Outside Diameter: 2 in.
- Height: 2.5 in.
- Top Style: Rubber
- Weight: Approximately 0.3 lb.
- Fitment Type: Universal clamp-on
Included Components
- 1x K&N RU-2690 Round Tapered Universal Air Filter
- 1x K&N 1/2 oz. Filter Oil
Product Description
The K&N RU-2690 is a compact, round tapered universal air filter designed to mount directly onto a carburetor throat or intake neck rather than a single vehicle's factory air box. With a 1.75 in. flange diameter and a small 2.5 in. overall height, it's well suited to small-displacement engines, tight-clearance applications, and equipment like generators, snowmobiles, and tractors.
Built from four layers of cotton gauze treated with K&N's tacking agent, the RU-2690 is engineered to trap contaminants while supporting strong airflow for a boost in horsepower and acceleration. The pliable rubber flange absorbs vibration for a secure hold and can stretch slightly to accommodate intake necks that fall between standard sizes, and the filter ships with a bottle of K&N's filter oil for maintenance.
This filter is a good fit for builders and enthusiasts working on small carbureted engines or custom intake setups where space is limited and a compact conical filter is needed rather than a factory-specific replacement. Since it's a clamp-on universal filter, match your carburetor throat's outside diameter to the filter's 1.75 in. inside diameter before ordering, and note that as a universal part, some installations may require minor fitting adjustments.
*Parts are for USA spec vehicles, please contact us to verify fitment on JDM & international models.
· · · SHIPPING · · ·
- Free shipping across the contiguous 48 United States (excludes Hawaii and Alaska). Item(s) ships on the same day or within 1 business day. Delivery time is within 2 to 4 business days excluding next day deliveries. Orders over $750 require signature for delivery.
- Canada customers - If does not collect import & duty fees during checkout, the shipping carrier will collect them prior to delivery.
· · · RETURNS · · ·
Your complete shopping satisfaction is our #1 priority. If an item you ordered from us does not meet your expectations, please contact us within 30 days of receiving the item(s). If your order arrives damaged from shipping please contact us and we will provide a prepaid return label to send back for a replacement or refund.
- Returned items must be in the original packaging (including plastic wrapped items) and in brand new condition.
- Any returns received installed, mounted, used or missing components will be subject to return fee's.
· · · PAYMENTS · · ·
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· · · response · · ·
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· · · CONTACT US · · ·
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