


K&N Replacement Element for RK-3929 Custom Air Filter
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
K&N Replacement Element for RK-3929 Custom Air FilterSKU: E 3040 UPC: 024844199348 K&N E 3040 Replacement Element for RK 3929 Custom Air Filter Fits 2004 2021 Harley Davidson Sportster The K&N E 3040 is a washable reusable oval air filter that replaces the element in RK 3929 custom air cleaner assemblies on select 2004 2021 Harley Davidson Sportster models. It delivers higher airflow for gains in horsepower and acceleration while protecting your engine with four layer cotton gauze filtration. Covered by
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Reviewed in the United States on April 17, 2024
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Reviewed in the United States on August 30, 2025
★★★★★ 5
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Reviewed in the United States on December 10, 2025
★★★★★ 5
Nice and Elegant.
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