Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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For Your Every Summer RSVP, with Code: SUMMER15
Description
K&N Round Air Filter (E-3978XD)K&N XD air filters use a Deep Pile Design, Extra Fine Weave Grade Cotton and alternate geometries for added efficiency and capacity for off road conditions. This extra thick filtering medium provides the increased protection demanded by high dust conditions while continuing to provide the performance necessary to stay in the front of the pack. The XD Cotton medium was developed for the extreme conditions encountered by race teams in the Baja 1000.
K&N XD air filters use a Deep Pile Design, Extra Fine Weave Grade Cotton and alternate geometries for added efficiency and capacity for off-road conditions. This extra thick filtering medium provides the increased protection demanded by high dust conditions while continuing to provide the performance necessary to stay in the front of the pack. The XD Cotton medium was developed for the extreme conditions encountered by race teams in the Baja 1000. This real world testing is combined with testing performed at K&N's own Dust Retention Laboratory in conformity with the ISO 5011 test protocol. XD Cotton Air filters can be cleaned in the same way as K&N's original cotton air filters.- Outstanding protection in harsh dusty conditions
- Washable and reusable
- Long service life
- Low restriction
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
4.6 ★★★★★
Based on 1472 reviews
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Product Reviews
★★★★★ 4
Cute lil shedding but it’ll do 🩷
Color: Hot Pink, Color: Hot Pink
Cute I love it looks good 🩷🩷🩷🩷 lil shedding but it’ll do
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
★★★★★ 5
Yes get this one!
Color: Pink
Oh yes this is a good one! So fluffy, and perfect, it came with a sample of real vs fake fur, and it was vacuum sealed, packaging is 10/10 and quality is amazing, thank you!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
★★★★★ 5
Love the color
Color: Red, Color: Red
Super vibrant color with minimal shedding .. it fits my steering wheel and easy to install and worth the money..
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
★★★★★ 3
It’s ok
Color: Lavender Purple
Its ok. Not as fluffy as i think it would be. I have had it over a month or so and its starting to get even more less fluffy. The color wAs more like a faded purple
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Very fluffy
Color: Wolf Tipped
Fast shipping and looks good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
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