The K&N KA-1709 is a reusable, pre-oiled replacement air filter for the Kawasaki VN1700 Vulcan, sold as a drop-in element rather than an intake modification. Its pleated media provides a large filtration area, and multiple layers of woven cotton gauze are used for filtration. The main reason to pay more than for a disposable element is that this filter is washed and re-oiled instead of being thrown away, and it carries a no-hassle lifetime limited warranty.
Fitment is the strongest argument for this part. The KA-1709 air filter's unique design allows it to fit directly into the factory airbox without any cutting or fitting. The manufacturer says it is designed to replace the Kawasaki 110130031 OE filter on the Voyager, Nomad, Classic and Classic LT models. Year ranges vary between the manufacturer's listings, so confirm your exact model year before ordering. Owners on user forums note that the kit leaves out the small spacers that sit where the airbox bolts pass through, so move them over from the old filter. Riders searching for a VN1700 Classic K&N upgrade without a tune should know that a filter change alone isn't significant enough to require a tuner, according to one owner, though other owners disagree.
No. The manufacturer states the filter fits directly into the factory airbox without cutting or fitting.
Owners on user forums report that the K&N does not include the small spacers used at the airbox bolt points, and that the K&N guidance is to remove them from the original filter and reuse them.
Opinions vary. Some owners on user forums report running a K&N with a stock setup and seeing no problems, while others have been told a fuel controller is needed. Confirm with the manufacturer before assuming either way.
The manufacturer rates this as an easy DIY job, with a screwdriver typically needed and an installation time of 5-10 minutes. The filter is pre-oiled, so it can go in as-is, but the manufacturer's re-oiling quantity applies at cleaning intervals. Before you start, check the airbox cover and filter hold-down fasteners against the manufacturer's installation sheet for your exact model. Transfer the spacers from the old element, since the new one does not include them, and make sure the seal sits evenly in the airbox before reinstalling the cover.
