K&N Engine Air Filter HD-4915
Product description
Key points
High airflow is the standout feature of the K&N HD-4915. It’s designed to support horsepower, acceleration, and engine response, without typically requiring fuel-management modifications.
The filter uses layers of treated cotton gauze to trap dirt and contaminants. It arrives pre-oiled and is washable and reusable, so it’s intended for continued use rather than routine disposal.
Its application-specific seals are designed for an OEM-style fit on select Harley-Davidson XG500 Street and XG750 Street models from 2015–2019. Keep in mind that fitment is limited to those listed applications, confirm your exact model before buying.
That combination makes the HD-4915 worth considering if you want a reusable replacement filter and value airflow as part of your intake setup. It doesn’t promise a specific power gain, though, and the product information doesn’t quantify any change in acceleration or engine response.
How to take care of it
K&N describes this as a washable, reusable, pre-oiled filter, with the potential to reduce how often you buy replacements. That can suit a rider who prefers maintaining one filter over discarding and replacing a conventional disposable type.
The details here don’t provide cleaning steps or a maintenance schedule. Follow K&N’s care instructions rather than guessing at how to wash or re-oil the cotton gauze. Its reusable design is a practical benefit, but it still requires maintenance when needed.
Practical tips
Before ordering, match your motorcycle to the stated application—not just the Harley-Davidson name. The listing calls out select 2015–2019 XG500 Street and XG750 Street models, so riders with a different year or model shouldn’t assume this filter will fit.
Picture a routine service where you’d otherwise install a fresh disposable filter: this option is designed to be cleaned and reused instead. That approach may appeal if you’re comfortable maintaining the filter, someone who prefers a simple replace-and-discard part may find a conventional filter more convenient.
It suits you if your bike is one of the listed models and you want a reusable filter designed for high airflow. Not the best choice if you need confirmed fitment for an unlisted motorcycle or want a guaranteed, quantified performance increase.
Practical doubts
Does the HD-4915 fit every Harley-Davidson? No. The stated fitment is limited to select 2015–2019 XG500 Street and XG750 Street models. Check the application details for your specific motorcycle.
Can you wash and reuse it? Yes. The product is described as washable and reusable. The information provided here doesn’t spell out the cleaning procedure, so use K&N’s care guidance.
Will it require fuel-management changes? The description says modifications are not typically required. That wording isn’t a guarantee for every motorcycle or setup.
Buying verdict
The HD-4915 makes sense for a rider who has a confirmed compatible XG500 Street or XG750 Street and wants a reusable cotton-gauze filter designed to support airflow. Its maintenance-friendly format sets it apart from a disposable replacement, but it won’t answer every fitment question for other bikes, and no specific performance improvement is promised. Buy it for the listed application and reusable design, look elsewhere if your model isn’t included or you need a stated power result.