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k&n universal clamp-on air filter: high performance replacement engine filter - flange diameter: 🔍 2.4375 in, filter height: 6 in, flange length: 0.625 in - oval straight shape (rc-3680) logo

K&N Universal Clamp-On Air Filter: High Performance Replacement Engine Filter - Flange Diameter: 🔍 2.4375 In, Filter Height: 6 In, Flange Length: 0.625 In - Oval Straight Shape (RC-3680) Review

6

·

Very good

Revainrating 4.5 out of 5  
Rating 
4.5
🔍 Car Filters, 🛠️ Replacement Parts

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img 1 attached to K&N Universal Clamp-On Air Filter: High Performance Replacement Engine Filter - Flange Diameter: 🔍 2.4375 In, Filter Height: 6 In, Flange Length: 0.625 In - Oval Straight Shape (RC-3680)
img 2 attached to K&N Universal Clamp-On Air Filter: High Performance Replacement Engine Filter - Flange Diameter: 🔍 2.4375 In, Filter Height: 6 In, Flange Length: 0.625 In - Oval Straight Shape (RC-3680)
img 3 attached to K&N Universal Clamp-On Air Filter: High Performance Replacement Engine Filter - Flange Diameter: 🔍 2.4375 In, Filter Height: 6 In, Flange Length: 0.625 In - Oval Straight Shape (RC-3680)
img 4 attached to K&N Universal Clamp-On Air Filter: High Performance Replacement Engine Filter - Flange Diameter: 🔍 2.4375 In, Filter Height: 6 In, Flange Length: 0.625 In - Oval Straight Shape (RC-3680)

Details

Product GradeReplacement Part
BrandK&N
Fit TypeUniversal Fit
ShapeCylindrical
MaterialAlloy Steel

Description of K&N Universal Clamp-On Air Filter: High Performance Replacement Engine Filter - Flange Diameter: 🔍 2.4375 In, Filter Height: 6 In, Flange Length: 0.625 In - Oval Straight Shape (RC-3680)

ENGINEERED POWER: State-of-the-art filtration media provides up to 50% more airflow than disposable paper filters to increase power and acceleration. Clogged or dirty air filters can reduce your vehicle’s acceleration by up to 10%. EASY INSTALLATION: Pre-oiled and built with simple clamp-on design. One of the easiest and most cost-effective upgrades for your vehicle for quick performance gains. SAVES MONEY: K&N high-flow replacement air filters will save you $250 over 10 years by avoiding disposable filters. ECO-FRIENDLY: Using a washable, reusable product helps reduce replacement waste. A K&N filter will last longer than 10 disposable filters. WORLD CLASS PROTECTION: Pushing the limits of engine protection by protecting your engine from harmful contaminants. LOW-MAINTENANCE DESIGN: 50,000 miles before your first cleaning under normal highway driving conditions. HIGH QUALITY: Made in America. RACE TESTED: The Official Air Filter of NASCAR. Trusted on the racetrack—made for your vehicle. NO-HASSLE WARRANTY: 1-Year Limited Warranty.

Reviews

Global ratings 6
  • 5
    4
  • 4
    1
  • 3
    1
  • 2
    0
  • 1
    0

Type of review

Revainrating 5 out of 5

Great product at a great price.

I highly recommend this product. You can't expect better performance. You won't be left out in the rain without a rain cover for this filter.

Pros
  • GOLS certified
Cons
  • Not as thick as other picks

Revainrating 5 out of 5

Excellent replacement for the Screaming Eagle Filter

Used as a replacement for the Harley Screaming Eagle Filter. I like it more, it's smaller but it flows just as well. Also at half the price of a Screaming Eagle filter.

Pros
  • Dope 🔥
Cons
  • I vaguely remember

Revainrating 5 out of 5

Now has a place in the Air Filters & Accessories section

This is the filter Harley should have released when they first released the Monster suction cup, everything this filter lets through looks great and the thin rectangle in the front gives you more room for your right leg, a big plus for me

Pros
  • Top marks for support and durability from testers
Cons
  • Unbelievable price

Revainrating 3 out of 5

This color works; Shades of grey.

Most of you will buy it for the quality, durability and K&N COLOR. But be warned: the first hot water bath turns it into 50 Shades of Grey. The beautiful red dress has just been washed. At least mine. Palmolive dish soap is all you need.

Pros
  • Very good value for money
Cons
  • Could have chosen a newer model

Revainrating 5 out of 5

Works with other air cleaner kits.

Needed a better quality air filter for the Chinese barbed air cleaner kit. Couldn't find a replacement for the K&N Chinese filter so I replaced the entire filter housing assembly. K&N is stuck. Put it in the sun to warm up the rubber, great. The only filters that retain fine dust are oiled, such as B.K&N.

Pros
  • Consistent test results
Cons
  • Faulty

Revainrating 4 out of 5

Great product, great price, fast delivery

What can be said about K&N that hasn't already been said? Amazing product quality and it works as it should. Note that if your bike is carbureted and you install this filter you will need to adjust the fuel mixture (more air = leaner so you need to enrich the mixture) by either adjusting the air/fuel mixture screw or (most likely ) Restart carburetor. If your bike is equipped with FI, you will need to remap the ECM or install an additional fuel regulator (Vance & Hines, Dynojet, Cobra, etc.)…

Pros
  • delivery was very fast
Cons
  • crumpled