K&N RG-1001BL Universal Clamp-On Air Filter

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Product guide

K&N RG-1001BL Universal Clamp-On Air Filter

The K&N RG-1001BL is a washable, reusable clamp-on engine air filter with a universal-fit claim and a form factor listed as conical, oval. Its dimensions make it important to compare the listed measurements with your intake before ordering, since “universal” does not confirm fit for a particular vehicle or piece of equipment.

At a glance

Washable and reusable design is intended to reduce the need for disposable replacement filters.
K&N says its multi-layer cotton gauze media is designed to trap contaminants while supporting airflow.
The maker's cleaning interval is conditional on normal highway driving, not a universal maintenance schedule.
The listing describes the filter as pre-oiled and ready to install, while also discussing drop-in installation in a factory air box. Verify the intended setup for this clamp-on model.

Price

$33.59Save 20%

Reference price: ~~$41.99~~

Price checked: Nov 14, 2026

View offer

Often bought together

K&N Air Filter Cleaning Kit: Aerosol Filter Cleaner and Oil Kit; Restores Engine Air Filter Performance; Service Kit-99-5000, Multi

$23.99

K&N High-Flow Original Lifetime Universal Clamp-On Air Filter: High Performance, Premium: Flange Diameter: 4 In, Filter Height: 5.5 In, Flange Length: 1.125 In, Shape: Round Tapered, RG-1001RD

$33.59

Pros and cons

Pros

Reusable construction can suit buyers looking to avoid replacing a disposable filter each time.
Manufacturer describes a flexible rubber flange intended to absorb vibration and provide a secure attachment.
Customer feedback reports easy installation and perceived performance or airflow gains, though experiences may vary by application.

Cons

A reusable filter requires periodic cleaning and appropriate care rather than simple replacement.
Universal-fit wording still requires matching the intake connection and available space to the filter dimensions.

Technical specifications

10 specifications

Identity
Brand	K&N
Model	RG-1001BL
Fit type	Universal Fit
Product grade	Replacement Part

Dimensions and installation
Form factor	Conical, Oval
Dimensions listed	6"L x 6"W x 5.5"H
Weight listed	0.3 kg

Construction and care
Filter media	Multiple layers of premium cotton gauze treated with a specially-designed tacking agent
Cleaning interval claim	Every 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

Listing details to confirm

The listing gives a shape of “Conical, Oval,” while its title calls it round tapered. The listed dimensions are 6"L x 6"W x 5.5"H, while the title gives a 4-inch flange diameter, 5.5-inch filter height and 1.125-inch flange length. These details are inconsistent, so confirm the exact shape and connection dimensions for model RG-1001BL before purchase. The cleaning interval applies to normal highway driving, and the listing's factory-air-box installation claim should be checked against this clamp-on filter's intended application. Customer feedback reports mixed durability experiences.

What’s in the box

Included

Filter assembly, described as 6-inch OD x 5.5-inch high with 4-inch connection
3-1/2-inch component
3-inch diameter flange with inverted filter top

Who is it for?

A good fit for

Drivers or equipment owners who have verified a compatible clamp-on intake size and want a washable, reusable filter.
Buyers comfortable with periodic cleaning in exchange for reusing the filter.

Less suited to

Anyone who needs a confirmed vehicle-specific fit without checking intake dimensions.
Buyers seeking a maintenance-free filter or a disposable replacement.

K&N RG-1001BL Universal Clamp-On Air Filter · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 1,567 ratings

5 stars79%79%
4 stars10%10%
3 stars6%6%
2 stars2%2%
1 star3%3%

Customer feedback highlights perceived performance and airflow, ease of installation, sound, appearance and value. Some customers report noticeable power gains, but those experiences are not a performance guarantee. Durability feedback is mixed, which matters for buyers choosing a reusable filter expected to remain in service over time. The aggregate ratings lean favorable overall, but ratings alone do not explain individual experiences or establish fit for a particular application.

Positive themes

Customers report good performance, easier installation and a pleasing sound while driving.
Some customers describe improved airflow and noticeable power gains in their applications.
Feedback includes positive comments about appearance and perceived value.

Mixed feedback

Durability opinions differ, with some customers finding the filter durable and others reporting issues.
Reported results are application-specific and do not establish a guaranteed power increase or vehicle fit.

Frequently asked questions

Is the K&N RG-1001BL guaranteed to fit any vehicle?

No. The listing claims universal fit, but that does not verify compatibility with a particular vehicle. Match your intake connection and available space to the filter before ordering.

How often does K&N say this filter needs cleaning?

The listing states every 75,000 miles under normal highway driving conditions and frames five years around an average of 15,000 miles driven per year. Actual needs depend on operating conditions.

Is this filter washable and reusable?

Yes. The listing describes it as washable and reusable. Reuse requires cleaning when needed.

What dimensions should I use to check fit?

The listing includes conflicting shape and size descriptions. Its details list 6"L x 6"W x 5.5"H, while the title gives a 4-inch flange diameter, 5.5-inch filter height and 1.125-inch flange length. Confirm the model's exact dimensions before purchase.