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Air Filter Shape

Filter Re-oiling Amount

Flange Angle

Flange Inside Diameter

Flange Length


Inside Length

Inside Width

Package Quantity

This Product Includes

Browse K&N Air Filters for your Vehicle

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K&N E-3910 Shape: Rectangular Air Filter H-1 7/8 ID-5 7/8/3 3/8 OD-6 5/8/4.25

Custom Air Filter

This is a universal fit product and may require customization to fit your vehicle.
retail price
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your price

in stock
Air Filter Shape Rectangular
Filter Material Cotton Gauze
Filter Re-Oiling Amount 0.42 oz (12 ml)
Flange Angle 0 degrees
Flange Inside Diameter 0 in (0 mm)
Flange Length 0 in (0 mm)
Flanges None
Height 1.875 in (48 mm)
Inside Length 5.875 in (149 mm)
Inside Width 3.375 in (86 mm)
Outside Length 6.625 in (168 mm)
Outside Width 4.25 in (108 mm)
Package Contents 1 Air Filter
Package Quantity 1
Product Style Rectangular Air Filter
K&N 33-2449 Shape: Panel (Flat) Air Filter H-2.75 in. L-12 7/8 in. W-4.25 in.

Replacement Air Filter

  • H-2.75 in.; L-12 7/8 in.; W-4.25 in.;
This is a direct fit, vehicle specific part.
retail price
you save
your price

in stock
Air Filter Shape Panel
Filter Material Cotton Gauze
Height 2.25 in (57 mm)
Outside Length 12.875 in (327 mm)
Outside Width 4.25 in (108 mm)
Package Contents 2 Air Filters
Package Quantity 2
Product Style Panel Air Filter
This Product Includes 2 Filters
Year Make Model Submodel Engine
2010-2013 BMW X5 M 4.4L-4.4L
2010-2014 BMW X6 M 4.4L-4.4L
2014-2014 BMW X6 xDrive50i 4.4L-4.4L
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  • Why don't we show the price?

    When a manufacturer implements a Minimum Advertised Price (MAP) policy, they create limits on the list price that retailers are allowed to advertise their products for. In line with our efforts to continually provide the lowest possible price, we've made it easier for you to inquire about our Exclusive Pricing on these MAP items.

  • Shipping Policy

    Free Ground Shipping
    Free FedEx ground shipping on all orders over $100. Free shipping to 48 Continental United States only. Orders under $100 will incur a FedEx ground shipping charge of $9.95.

    $9.95 Per Wheel/$25 Per Tire
    Each wheel will incur a $9.95 per wheel fee and each tire will incur a $25 per tire fee up to $129. You will be charged a maximum of $129 regardless of how many wheels and/or tires you purchase.

    $129 Truck Freight
    Oversized parts will incur a $129 truck freight charge that FedEx cannot provide standard ground shipping on.