What is the XStream top feature?

The XStream top design incorporates an additional filter element within the filter's top. This increases the overall filter surface area, allowing for higher air flow and extending the time between necessary cleanings.

How does the rubber flange help with installation?

The pliable rubber flange is strong and flexible, designed to absorb engine vibrations. It also allows for secure attachment and can be stretched slightly to ensure a snug fit on intake tubes that are close to the specified size.

Is this filter street legal in all states?

This K&N air filter is not CARB approved and cannot be shipped to California due to emissions regulations.

K&N Universal X-Stream Clamp-On Filter 6in Base OD x 5in Top OD x 6.5in Height x 3in Flange ID

Specifications

Brand: K&N
Part #: RX-4730
UPC: 024844087881

K&N Universal X-Stream Clamp-On Filter 6in Base OD x 5in Top OD x 6.5in Height x 3in Flange ID

Name: K&N Universal X-Stream Clamp-On Filter 6in Base OD x 5in Top OD x 6.5in Height x 3in Flange ID
Brand: K&N
Price: 125.99 USD
Availability: InStock

$125.99

Only 2 left in stock

K&N Universal X-Stream Clamp-On Air Filter RX-4730. Features a filter within the top for increased airflow and longer service intervals.

Key Features

Fits a wide range of vehicles with a 3-inch intake tube diameter.
Features an XStream top design with an additional filter element for increased airflow and extended service intervals.
Constructed with a strong, pliable rubber flange that absorbs vibration and ensures a secure attachment.
The flange can be stretched up to 1/16 inch to accommodate minor size variations.
Washable and reusable air filter element for long-term use.
Clamp-on design for straightforward installation.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

This K&N Universal X-Stream Air Filter, part number RX-4730, is a clamp-on style filter designed to increase airflow and filtration. It features an innovative design with an additional filter element integrated into the top of the unit, which effectively expands the filter's surface area. This means more air can pass through, and the filter can go longer between cleanings. It's built with a pliable rubber flange that's strong and flexible, helping it absorb engine vibrations and attach securely to your intake tubing. This filter is washable and reusable, making it a solid option for performance builds across a range of vehicles, including models like the Ford Ranger, Dodge Intrepid, and Acura RDX.

The RX-4730 has a 3-inch inner diameter flange, a 6-inch base outer diameter, a 5-inch top outer diameter, and stands 6.5 inches tall. The rubber flange is designed to stretch up to 1/16th of an inch, allowing for a secure fit on slightly varied intake pipe sizes. Because it's a universal part, it's a popular choice when upgrading from a stock airbox or when building a custom intake system.