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K&N Buell Firebolt/Lightning/Ulysses Replacement Air Filter
K&N Buell Firebolt/Lightning/Ulysses Replacement Air Filter
K&N Buell Firebolt/Lightning/Ulysses Replacement Air Filter
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K&N Buell Firebolt/Lightning/Ulysses Replacement Air Filter

Marsoni M251S
Sale price$67.19
Pay 4 payments of $16.80 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
K&N Buell Firebolt/Lightning/Ulysses Replacement Air FilterK&N's high flow air filters are available as a replacement for your stock motorcycle air filter element. They are custom engineered to fit your specific application and are designed to provide low restriction and increased performance, while providing excellent engine protection for your motorcycle. Installation Instructions This Part Fits: Year Make Model Submodel 2005 2007,2009 2010 Buell Lightning CityX XB9SX Base 2004 2010 Buell XB12R Firebolt
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  • Express: 1-2 business days

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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
4.3 ★★★★★
Based on 1759 reviews
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Product Reviews
J
Verified Purchase
Jeff Pesos
New York, US
★★★★★ 4
Works like a supplement
If you use it and see a difference, you will blame it on this cleaner, if not, you will say the product does not work. Exactly like your weight loss supplements! Who knows what this stuff does, but it may do something. Or maybe it does not.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 7, 2026
M
Verified Purchase
Michael Sliwinski
Cuba, US
★★★★★ 5
Used to clean an O2 sensor
Seems to have resolved an issue with a wavering idle for my 89 Mercedes 300e with 468,000 miles.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026
M
Verified Purchase
Marvin Burton
Dallas, US
★★★★★ 3
Nothing
Didn’t work for me
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
M
Verified Purchase
mechanic
Whiting, US
★★★★★ 1
It doesn’t work
This don’t work at all. I do not recommend. I use all four containers, and the light is still on.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
A
Verified Purchase
Amazon Customer
Carnegie, US
★★★★★ 5
2014 Ford Edge SEL
Worked like a charm! Used as directed, it cleared the P0420 & P0430 codes that were coming up on my OBD II scanner after a complete engine swap. Definitely recommend this product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026

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