The K&N HD-1499 is a unique-shape replacement air filter for Harley-Davidson motorcycles, built on K&N's washable cotton gauze media. The manufacturer describes it as a reusable element that you clean and re-oil rather than throw away, which is where it earns its price over a disposable filter. It also carries the manufacturer's No-Hassle Lifetime Limited warranty, so the cost is spread across many cleaning cycles. Buyers looking for a 1.625 inch cotton gauze Harley air filter, or a K&N HD-1499 upgrade for a Twin Cam or Softail, will find the stock-style round profile and 1.625 inch height in the spec list below.
The manufacturer lists fitment for Twin Cam models from 1999 through 2007 and Softail models from 2008 through 2015. Owners on user forums report year and model overlap that differs from that list, so confirm your exact model and year with the manufacturer before ordering. Installation is a quick job: the manufacturer lists a screwdriver as the only tool and a 5 to 10 minute time frame. Re-oil the element at the manufacturer's stated amount of 0.27 oz (8 ml) before installing it.
The manufacturer backs this filter with a No-Hassle Lifetime Limited warranty.
The manufacturer specifies a re-oiling amount of 0.27 oz (8 ml). Use the amount stated on the manufacturer's documentation for your cleaning and re-oiling routine.
The manufacturer lists Twin Cam models from 1999 to 2007 and Softail models from 2008 to 2015. Owners on user forums report model-year differences, so confirm your exact year and model with the manufacturer before buying.
Per the manufacturer's install information, this is a screwdriver-only job that takes roughly 5 to 10 minutes, which makes it a practical weekend swap. Before installation, confirm the filter is oiled to the manufacturer's 0.27 oz (8 ml) re-oiling amount, and check that the element sits fully seated in the airbox so the sealing edge is not pinched. Confirm your model year first, because fitment details vary between sources.
