The K&N E-3514 is a 4-inch-tall replacement element for the brand's Large Oval custom air cleaner assemblies, measuring 14.625 in outside length, 7.75 in outside width, and 4 in height. Its cotton-gauze media is oiled and built to be washed and reused, so it replaces a disposable paper element rather than acting as a one-time upgrade.
Over the long run, the cost case favors this filter. The manufacturer says it generally needs cleaning only about every 50,000 miles under normal highway driving, and it is backed by a No-Hassle Lifetime Limited Warranty. The manufacturer also states it is emissions legal in all 50 states and will not void the vehicle warranty, which matters when weighing a performance element against a cheaper disposable one. Search terms: K&N E-3514 oval air filter, 4 inch large oval air cleaner element, reusable cotton gauze air filter, 50,000 mile washable air filter.
Before ordering, confirm your housing. The manufacturer's custom-assembly literature says those assemblies are designed for engines with a round element air cleaner housing, so measure your base against the 14.625 x 7.75 inch footprint. For service, the manufacturer's Recharger kit (99-5050) includes the cleaner and oil needed to clean and re-oil the element. The manufacturer also advises against drying the filter with compressed air.
The manufacturer lists the E-3514 as the element for Large Oval assemblies with a 4-inch element height. The 2-inch version for the same assembly size is the E-3515.
The manufacturer says it generally needs cleaning about every 50,000 miles under normal highway driving. Its FAQ also states that K&N High-Flow filters can be cleaned and re-oiled as often as is reasonably necessary.
No. The manufacturer recommends air-drying the filter because compressed air can tear the cotton fibers.
This is a drop-in swap, not a modification. Remove the existing element from the housing, seat the K&N in the same position, and reinstall the cover. Use basic hand tools to loosen the clamps or fasteners. Before cleaning or oiling, let the filter dry fully. Follow the oiling directions closely, because the manufacturer warns against saturating the media. If oil drips, let the filter sit until it stops, then wipe the excess from the frame. Also verify the housing fits the 14.625 x 7.75 inch footprint before you install.
