K&N RU-2710 Universal Clamp-On Air Filter

The K&N RU-2710 is a round universal clamp-on replacement air filter with a washable, reusable design. Its published dimensions are useful for an initial fit check, but universal-fit wording does not confirm compatibility with a particular intake.

At a glance

Washable and reusable construction is intended as an alternative to frequently replaced disposable filters.
The manufacturer describes four layers of treated cotton gauze for trapping contaminants.
The manufacturer states cleaning is needed every 75,000 miles under normal highway driving conditions, using 15,000 miles per year to express that as five years.
Customer feedback mentions good fit, including with a Racing Beat NA Miata Intake Kit and CARB-approved cold air intake systems. Those reports do not establish fit for every vehicle or intake.

Price

$63.19Save 20%

Reference price: ~~$78.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

Reusable, washable construction avoids routine replacement of the filter itself.
The stated dimensions and round shape provide useful initial measurements for intake fit checks.
Pre-oiled construction is presented as ready for installation.

Cons

The universal-fit claim still requires matching the filter’s flange and overall dimensions to the specific intake.

Technical specifications

9 specifications

Identity
Brand	K&N
Model	RU-2710

Dimensions and installation
Form factor	Round
Dimensions listed	3.31"L x 3.31"W x 6.5"H
Weight listed	0.42 kg
Fit type	Universal Fit

Construction and care
Preparation	Pre-oiled
Cleaning interval claimed	75,000 miles under normal highway driving conditions (5 years based on the average miles driven per year of 15,000 miles)
Warranty claim	1-Year Limited Warranty

What to know before buying

Cleaning interval is a manufacturer claim for normal highway driving. Driving conditions can affect how often the filter needs attention.

What’s in the box

Included

3-5/16"FLG
4-3/4"B
3-1/2"T
6-1/2"H

Who is it for?

A good fit for

Drivers seeking a washable, reusable clamp-on air filter for an intake whose connection and clearance match the listed dimensions.
Buyers comparing a round replacement filter for an aftermarket intake, including setups like those mentioned in customer feedback.

Less suited to

Buyers who need a confirmed vehicle-specific fit without checking intake dimensions and connection requirements.
Buyers seeking a complete intake kit rather than a replacement filter.

K&N RU-2710 Universal Clamp-On Air Filter · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 38 ratings

5 stars80%80%
4 stars8%8%
3 stars0%0%
2 stars0%0%
1 star12%12%

Customer feedback highlights good fit, with specific mentions of a Racing Beat NA Miata Intake Kit and CARB-approved cold air intake systems. This is relevant when comparing intake setups, but does not guarantee compatibility with another application. Aggregate ratings lean positive overall, while a smaller low-star share indicates experiences are not uniformly favorable and does not identify a specific cause.

Positive themes

Customers report that the filter fits well, including in some named intake setups.

Frequently asked questions

Will the RU-2710 fit my vehicle?

The listing calls it universal fit, but does not confirm fitment for every vehicle. Compare your intake connection and available clearance with the listed dimensions before purchase.

How often does it need cleaning?

The manufacturer says every 75,000 miles under normal highway driving conditions, equivalent to five years at an assumed 15,000 miles per year. Actual conditions may change the interval.

Is the filter reusable?

Yes. The listing describes it as washable and reusable, and says it is pre-oiled.