K&N Round Air Filter (E-3978XD)
SKU: 29430145763

K&N Round Air Filter (E-3978XD)

$117.00 $130.00
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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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:
  1. 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
SKU: 29430145763

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4.8 ★★★★★
Based on 215 reviews
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Product Reviews
D
Verified Purchase
Dorothy
San Leandro, US
★★★★★ 5
Recommend!
Color: Silver
This product is amazing and highly recommended by me to all my friends!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 26, 2026
R
Verified Purchase
Rae
Fort Morgan, US
★★★★★ 3
Shining Shimmering Splendid
Color: Gold, Color: Gold
Alright, first of all I LOVE the packaging and the spray bottle. Absolutely adorable! Aesthetics are off the charts. As for the actual power and look of the glitter, it is pretty good. I tried to take photos of it on my hands/arms but the camera has a really hard time picking up the small glitter. In person it will give you a shiny or shimmery look rather than coated in gold. Not quite what I was hoping for, but definitely a cool look! The spray is quite powerful, so be aware of where you are putting it on. It is very easy to apply, just keep in mind that glitter will go EVERYWHERE. It also comes off easily enough either by rubbing a cloth or washing with water.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 9, 2025
K
Verified Purchase
Kristin
Bozeman, US
★★★★★ 5
Good value, sweet soft sparkle
Color: Silver
This is cute. Bought it for a special event for myself but my little girls are obsessed! Love that it comes with two refills. Good value. Love the cute little delivery system.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026
S
Verified Purchase
solioness
Los Angeles, US
★★★★★ 5
Sparkling
Color: Silver
Nice glitter. Washes off cleanly and easily but stays put during the night.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
A
Verified Purchase
Amanda Timberman
Lexington, US
★★★★★ 5
It will shine/glitter up your world.
Color: Silver
My daughter loves this. She has me buy her one every Christmas and uses it to shimmer up everything! Mists out fine particles of glitter as a big poof. It does tend to get everywhere. More even when applying, unlike the brush on applicating ones.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 20, 2026

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