Mahle Rings Perf Napier Steel 2nd Ring 4.055in x 1.0MM .136in RW Pack Ring Set (48 Qty Bulk Pack)

57-series OEM air box intake systems include a washable, reusable High-Flow Air Filter paired with a CAD-designed high airflow intake tube, and is designed to be a simple, cost-effective performance upgrade. The included oiled cotton filter is a direct replacement for your factory filter, drops easily into the factory air box, can go up to 50,000 miles between filter services under normal highway driving conditions, and offers K&N’s industry-leading engine protection. Each 57-series OEM air box intake system is designed for specific vehicle applications to ensure a precise fit, and can typically be installed in less than 90 minutes with only standard hand tools. Buy with confidence under the K&N 10-Year/Million Mile Limited Warranty. Legal in all 50 States.