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.
Specifications:
| Description_DEF |
Air Filter |
| Description_DES |
Round Air Filter |
| Description_EXT |
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. |
| Description_MKT |
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. |
| Description_INV |
Round Air Filter |
| Description_SHO |
Round Air Filter |
| Prop 65 Yes/No |
Yes |
| Weight |
4.5 lb (2 kg) |
| Package Material |
Paperboard |
| Package Type |
Box |
| Outside Diameter |
14 in (356 mm) |
| Prop 65 (C, R or CR) |
CR |
| Air Filter Material |
Cotton Gauze |
| Pre-Screened |
No |
| Prop 65 - Short Label |
WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov |
| Item Type |
High Performance |
| Oil Included |
Yes |
| Height |
4 in (102 mm) |
| Inner Wire |
No |
| Frame Design |
Flexible |
| Flanges |
None |
| Package Quantity |
1 |
| Package Contents |
1 Air Filter |
| Prop 65 Warning Label |
https://www.knfilters.com/images/l/prop65.jpg |
| Title |
K&N E-3979XD Round Air Filter |
| Washable |
Yes |
| Inside Diameter |
11.5 in (292 mm) |
| Top Style |
Open |
| Filter Re-Oiling Amount |
6.55 oz (194 ml) |
| Warranty |
1 Year Limited |
| Air Filter Shape |
Round |
| Top Material |
None |
| Product Style |
Round Air Filter |
| Length |
7.0000 |
| Width |
18.0000 |
| Height |
18.0000 |
| Weight |
4.0000 |
