K&N Engineering K&N Universal Round Air Filter 16in OD / 4in Height E-3977XD
K&N Engineering K&N Universal Round Air Filter 16in OD / 4in Height E-3977XD
Out of stock
Not sure this is the right part? Ask us to check fitment. Include your year, make, model, engine and manufacturer part number.
Need this part?
This item is currently unavailable. Ask us about availability or help finding a suitable replacement.
Shipping & returns
This selection is unavailable. Ask us to confirm availability and timing.
Shipping details
In-stock orders are processed within 48 hours; transit time is additional.
International orders include export processing and customs clearance. Duties, taxes and brokerage are extra; final freight charges may change after remeasurement.
Read the shipping policyKN Universal Air Filter
Air Filter
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.
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.
