The aFe air filter is simply more efficient than competitive products. Multiple discrete layers facilitate depth filtration, which contributes to efficiency and promotes longevity over paper filters, which depend on quick clogging surface filtration. In addition, oil in the media enables the cotton gauze to filter out particles at a higher degree of efficiency without restricting airflow (see also pic A). The aFe filter lasts a lifetime, depending on the conditions clean Filter every 30-40.000km and pre-oil again (filter cleaning kits you can find in the "UNIVERSAL/Car Care" category) ! ------------------------- Item : Performance Air Filter (Pro5R) aFe Item # : 10-10096 Material : 100% Polyurethane Application : 04-08 Chevy Colorado, GMC Canyon (2.8/3.5L), 05-07 Hummer H3 Contents : 1 Air Filter
