AutoZone K&N/Custom air filter

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    K&N/Custom air filter

    Part Number: E-3977XD

    Features & Benefits

    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
    Product Details
    Part Number: E-3977XD
    Weight: 5.85 lbs
    Shape: Round Straight
    Size: 4 to 4.99 in. Overall Height
    Air Filter Flange: Not a Flanged Filter
    Air Filter Frame Design: Flexible
    Air Filter Inside Diameter (in): 13
    Air Filter Material: Cotton Gauze
    Air Filter Oil Included: Air Filter Pre-Oiled
    Air Filter Outside Diameter (in): 16
    Air Filter Overall Height (in): 4
    Air Filter Pre-Screened: Yes
    Air Filter Shape: Round Air Filter
    Item Grade: High Performance
    Package Contents: 1 Air Filter
    Package Quantity: 1
    Washable Filter: Yes
    Shipping Information: Overnight and Two Day shipping are not available for PO Box, APO/FPO/DPO or US Territory addresses.
    This product may be shipped directly by the vendor to any eligible US addresses, excluding APO/FPO/DPO or US Territory addresses.
    • Overall

      K&N/Custom air filter


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