★★★★★ 5
Fits and does the job.
Style: BE-177P 1-Pack
Fits and does the job. I feel the difference.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
K&N Universal Clamp-On Air Filter 4-1/2in FLG / 5-7/8in B / 4-1/2in T / 8-3/8in H
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
K&N Universal Clamp-On Air Filter 4-1/2in FLG / 5-7/8in B / 4-1/2in T / 8-3/8in HK&N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles, radio controlled cars, generators, snowmobiles, tractors, and other applications. Regardless of the angle or offset diameter of the air intake, there is probably a K&N Universal air filter for your equipment. All filters are constructed with ultra strong molded pliable rubber flanges which absorb vibration and allow for secure
Quick Dispatch:
Your K&N Universal Clamp-On Air Filter 4-1/2in FLG / 5-7/8in B / 4-1/2in T / 8-3/8in H orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your K&N Universal Clamp-On Air Filter 4-1/2in FLG / 5-7/8in B / 4-1/2in T / 8-3/8in H ships.
Need Help?
Questions about K&N Universal Clamp-On Air Filter 4-1/2in FLG / 5-7/8in B / 4-1/2in T / 8-3/8in H, sizing, or delivery? We're just an email away.
Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for K&N Universal Clamp-On Air Filter 4-1/2in FLG / 5-7/8in B / 4-1/2in T / 8-3/8in H in your area.
Get Shipping Estimates
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
You may also like
K&N Filter Universal Rubber Filter 2 1/4 inch Flange 3 1/2 inch OD 4 inch Height
42.39
K&N Custom Air Filter - Oval - 11.5in O/S L x 8.125in O/S W x 2in H
83.99
K&N Custom Air Filter 14in OD / 12in ID / 6in Height
157.99
K&N Universal Clamp-On Air Filter 3in Flange ID x 5in Base OD x 3.5in Top OD x 6in Height
50.39
K&N HVAC Filter - 12 X 20 X 1
59.99
K&N HVAC Filter - 14 x 20 x 1
59.99
K&N 88-12 Harley-Davidson Sportster Screamin Eagle Element Replacement Air Filter
83.99
4.6 ★★★★★
Based on 633 reviews
Sort
Product Reviews
★★★★★ 4
Tight
Style: BE-966P 1-Pack
It fits but its tight, the frame is stiffer than other brands and slightly larger so once its in im not sure how well its seated and is going to be a pain to remove next time
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
★★★★★ 5
great filters
Style: BE-157P 1-Pack
does a great job at providing maximum airflow.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 11, 2026
★★★★★ 1
Does NOT fit BMW F22 2 Series
Style: BE-472P 1-Pack
Does not fit BMW F22 2 Series. The housing for the cabin air filter is curved and the OEM cabin filter is flexible like an accordion. This filter has the correct dimensions but it does not flex so it will not fit the housing properly. You MIGHT be able to jam it in but not without damaging the filter and at that point it would be practically useless. Buy one that is OEM spec and confirm it can flex for proper fit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
★★★★★ 3
It’s ok
Style: BE-157P 1-Pack
Not a perfect fit, decent quality. Fair product since it was significantly cheaper than the manufacturer filter.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 2, 2026
