Home » Automotive » Saturn » Ion 2004 SATURN ION 20-1615WATER REPELLENT PRE-FILTER W/TOPFilter Manufacturer: K&NShape: ROUND TAPERFilter#: RU-4990Intake Number: 69-8431T Base Diameter: 6 Top Diameter: 5 Height: 5 9/16 Material: Water Repellent $22.95 2005 SATURN ION 20-1615WATER REPELLENT PRE-FILTER W/TOPFilter Manufacturer: K&NShape: ROUND TAPERFilter#: RU-4990Intake Number: 69-8431T Base Diameter: 6 Top Diameter: 5 Height: 5 9/16 Material: Water Repellent $22.95 2006 SATURN ION 20-1615WATER REPELLENT PRE-FILTER W/TOPFilter Manufacturer: K&NShape: ROUND TAPERFilter#: RU-4990Intake Number: 69-8431T Base Diameter: 6 Top Diameter: 5 Height: 5 9/16 Material: Water Repellent $22.95