The Oil Analysis Company | Solar & Wind Energy! | Weber Jet Suggestions | Home Page | Oil Sample Kits | Weber Carb Parts | Chemicals | Porsche Posters | Contact Us | Shopping Cart | FAQs | Links Page | Opportunities | Links Page 1 | Security & Company Info | Carb Tuning | OIL REFINERY RELATED K&N Filter Inserts Air Filter Inserts are replacements for the "red" Air filter elements that are installed in the Water-shield and the Flat Top K&N Filter Assemblies. These filters are stamped with "C120A6-8" or "KE3671E". $47.50 Related Items Here are some products that may also be of interest to you: