


K&N Round Air Filter Assembly 5.25in ID / 5in Height / 5.125in Neck Flange / 1 1/4in Drop Base
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
K&N Round Air Filter Assembly 5.25in ID / 5in Height / 5.125in Neck Flange / 1 1/4in Drop BaseK&N's custom air cleaner assemblies are designed with the racer in mind. They incorporate good looks as well as the superior air flow that you expect from K&N. These custom air cleaner assemblies are designed for use with any engine that uses a round element air cleaner housing. They incorporate our famous K&N Air Filters and provide more air flow than other assemblies of this type. Available in 4 different designs, the perfect assembly is sure to be
Quick Dispatch:
Your K&N Round Air Filter Assembly 5.25in ID / 5in Height / 5.125in Neck Flange / 1 1/4in Drop Base 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 Round Air Filter Assembly 5.25in ID / 5in Height / 5.125in Neck Flange / 1 1/4in Drop Base ships.
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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
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★★★★★ 5
Get it!
Size: 10-11, Color: Blue Plaid
Another must buy on my list! Color, size and length were all good. I was a bit surprised as to the thickness of the vest, not heavy, but well made. Definitely value for money!
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Reviewed in the United States on September 17, 2025
★★★★★ 5
Love it
Size: 14, Color: Black
Fits perfectly
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Reviewed in the United States on September 25, 2025
★★★★★ 5
Nice & classy
Size: 10-11, Color: Black
Good fit on my son
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Reviewed in the United States on April 1, 2025
★★★★★ 3
Size down.
Size: 16, Color: Black
Fit too large. Nice quality.
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Reviewed in the United States on May 14, 2026
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Size: 4, Color: Burgundy, Size: 4, Color: Burgundy
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