This black K&N Drycharger (RF-1015DK) is a pre-filter wrap made from silicone treated polyester that covers the outside of a K&N air filter. Its openings are sized so that airflow stays high, while the treated fabric reduces how much water reaches the element itself. For a driver running a K&N RF-1015 filter in rain, road spray, or dusty track conditions, that means a sacrificial outer layer takes the first hit from moisture and grit, which can extend the time between filter cleaning sessions. Search terms like K&N RF-1015DK pre-filter, K&N drycharger wrap, and round tapered air filter sleeve describe exactly what this part does.
Fitment is the key point: the wrap is built around the RF-1015 filter, so confirm your filter's part number before ordering. Its dimensions are a 6-inch base, a 4.5-inch top, and a 7-inch height, with an open top rather than a closed cap. The manufacturer backs the wrap with a one-year limited warranty. Installation is a slip-on job that takes only a few minutes with the filter already out of its housing, and it does not require any tools. Compared with an unwrapped filter, this add-on is a low-cost way to protect a K&N element in wet or dusty use without changing the filter itself.
The manufacturer lists this Drycharger as a wrap for the K&N RF-1015 filter. Confirm the filter part number on your element before ordering.
The manufacturer's specifications list it as open on top (not a closed cap), with a round tapered shape.
The manufacturer specifies a one-year limited warranty on this wrap.
