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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:
- 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
4.1 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 5
Great pans for parties.
Item Package Quantity: 25
I continually order these for all of our parties & holidays. My family calls & asks for some for their parties as well. Well worth the $$
We use cookie sheets underneath when we transport heavy salads so they don’t spill. Just an fyi!
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Reviewed in the United States on August 25, 2025
★★★★★ 5
Pans
Item Package Quantity: 25
These are the Quick cook
Quick clean up I love these pans
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Reviewed in the United States on December 26, 2025
★★★★★ 5
Food container
Item Package Quantity: 25
Good quality food container
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Reviewed in the United States on September 24, 2025
★★★★★ 5
WORKS GOOD
Item Package Quantity: 50
Why did you pick this product vs others?:
I like the lids
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Reviewed in the United States on June 27, 2025
★★★★★ 5
Great cake taker
Item Package Quantity: 50
They are great to carry food
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Reviewed in the United States on April 18, 2025