K&N Universal Custom Air Filter - E-3988

The K&N replacement air filter for RK Series air cleaner assemblies is designed to increase horsepower and acceleration while providing excellent filtration. The air filter is washable and reusable and designed to be used as a replacement air filter for specific K&N RK Series air cleaner assemblies for Harley-Davidson motorcycles. The air filter is covered by the famous K&N Million-Mile Limited Warranty.

Product Features:

• Replacement air filter for specific RK Series air cleaner assemblies
• Designed to boost horsepower and rate of acceleration
• Washable and reusable
• High air flow filter media provides exceptional filtration
• Million Mile Limited Warranty®

Product Attributes:

• Air Filter Material: Cotton Gauze
• Air Filter Shape: Oval Tapered
• Base Outside Length: 10 in (254 mm)
• Base Outside Width: 6 in (152 mm)
• Flanges: None
• Frame Design: Flexible
• Height: 2.375 in (60 mm)
• Inner Wire: No
• Item Type: High Performance
• Oil Included: Yes
• Outside Diameter: 9.313 in (237 mm)
• Overall Filter Efficiency: Up To 99% Efficiency
• Package Contents: 1 Air Filter
• Package Material: Paperboard
• Package Quantity: 1
• Package Type: Box
• Pre-Screened: No
• Product Style: Unique Air Filters
• Top Outside Length: 8 in (203 mm)
• Top Outside Width: 5 in (127 mm)
• Washable: Yes
• Weight: 1.1 lb (0.5 kg)