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Ships within 48 hours · Estimated delivery Jul 30 - Aug 4
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Description
Universal Filter Universal Rubber Filter 3.75in Flange ID/5.375in Base OD/4.375in Top OD/5in Height (KNNRU-4250)K&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
K&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 attachment and can also be stretched for up to 1/16 of an inch (1.5mm) to fit in-between sizes. K&N universal air filters are washable and reusable.Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.5 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 5
Daughter approved
Size: 1 Little Kid, Color: Turquoise/Multi
My daughter picked out these shoes and she absolutely loves them.
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Reviewed in the United States on May 9, 2026
★★★★★ 5
Not stiff or tight…
Size: 13.5 Little Kid, Color: Turquoise/Multi
My niece loved them. So many of the slips in shoes are too stiff and tight, this one was easy on, not stiff or tight, just perfect!
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Reviewed in the United States on March 18, 2026
★★★★★ 5
De acuerdo a lo esperado
Size: 1 Little Kid, Color: Lavender
Muy buena calidad y medida correcta
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Reviewed in the United States on September 8, 2025
★★★★★ 5
Excelente en todo sentido
100% Recommended; expected product and excellent service from the seller. Package received in Colombia, without problems.
100% Recomendado; producto esperado y excelente servicio del vendedor. Paquete recibido en Colombia, sin problemas.
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Reviewed in the United States on August 14, 2024
★★★★★ 3
Narrow
Size: 11.5 Little Kid, Color: Lavender
These were so cute, but run narrow. My daughter tried wearing them but she kept complaining they were too tight. Wish we could love them because I love how easy this brand is for my daughter to get on her feet
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Reviewed in the United States on August 19, 2025