Shipping Estimate
USA
- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 7 - Jul 12
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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
4.7 ★★★★★
Based on 1225 reviews
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Product Reviews
★★★★★ 5
Best SPF chapstick
Scent: Island Coconut, Size: 0.35 Fl Oz (Pack of 1)
This is my new favorite chapstick. It’s a little thicker than I’ve used before but super smooth and not sticky!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
★★★★★ 5
Love this!
Scent: Pineapple, Size: 0.35 Fl Oz (Pack of 1)
I am obsessed with this lip product! It smells amazing and keeps my lips very moisturized. I have already repurchased it twice! Worth the price!
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Really impressed!
Scent: Island Coconut, Size: 0.35 Fl Oz (Pack of 1)
I use this brand as my daily body sunscreen and love the smell, so I was tempted to buy this lip balm. I'm so glad I did!
It smells great, and my absolute favorite thing about it is that it seems to last all day. I wear it with a light lip liner and my lips stay soft and moisturized after a long work day, 2 meals, etc.
It does have a bad taste, but not nearly as bad as other brands I've tried. If you do the lip stick trick with your finger its unlikely to get in your mouth, unless you bite your lips. So its been a great protection against lip biting as well.
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Reviewed in the United States on July 9, 2025
★★★★★ 5
Great product
Scent: Island Coconut, Size: 0.35 Ounce (Pack of 2)
This goes on very smooth! Not like Aquaphor or chapstick but somewhere in between!
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Reviewed in the United States on June 6, 2026
★★★★★ 3
Funny after taste
Scent: Island Coconut, Size: 0.35 Fl Oz (Pack of 1)
Usually love Hawaiian Tropic products but this lip balm has a weird taste. The spf is good, if you don't mind the taste.
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Reviewed in the United States on May 15, 2026
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