Just for future reference, Hordpower uses a K&N E-3325. It’s on Amazon. https://www.amazon.com/3325-High-Performance-Custom-Filter/dp/B000E7H47Q?source=ps-sl-shoppingads-lpcontext&ref_=fplfs&psc=1&smid=ATVPDKIKX0DER

Just in case you ever need to replace it!