K&N XStream Top Universal Air Filter RX-4990

Upgrade your vehicle's air intake system with the K&N XStream Top Universal Air Filter RX-4990, designed for those who demand peak performance. This filter features a unique design that adds a secondary filter layer at the top, increasing the filter area for superior airflow and extended service intervals. Whether you're hitting the track or cruising on the highway, this air filter ensures your engine receives the optimal airflow it needs.

Key Features

• Color: Red
• Large End Diameter: 6 in (152 mm)
• Material: Cotton Gauze
• Shape: Round Tapered
• Base Outside Diameter: 6 in (152 mm)
• Filter Re-Oiling Amount: 0.96 oz (28 ml)
• Flange Angle: 0 degrees
• Flange Inside Diameter: 3 in (76 mm)
• Flange Length: 1.75 in (44 mm)
• Flange Offset: 0 in (0 mm)
• Flange Type: Centered
• Flanges: 1
• Frame Design: Flexible
• Height: 5.563 in (141 mm)
• Item Type: High Performance
• Oil Included: Yes
• Package Contents: 1 Air Filter
• Package Material: Paperboard
• Package Quantity: 1
• Package Type: Box
• Pre-Screened: No
• Product Style: Round Tapered Universal Air Filter
• Top Outside Diameter: 5 in (127 mm)
• Top Style: X-Stream
• Warranty: 1 Year Limited
• Washable: Yes
• Weight: 1.4 lb (0.7 kg)

Why Choose the RX-4990?

Racers and car enthusiasts alike appreciate the K&N RX-4990 for its exceptional airflow and filtration capabilities. The ultra-strong molded rubber flanges not only absorb vibrations but also ensure a secure fit. This filter can stretch up to 1/16 inch (1.5mm) to accommodate various sizes, making it a versatile choice for different vehicles. Plus, it's washable and reusable, saving you money in the long run.

Customer Insights

Users have reported noticeable improvements in engine responsiveness and throttle response after installing the RX-4990. Many have praised its easy installation process and the peace of mind that comes from knowing their engine is well-protected.

Installation Instructions

For detailed installation instructions, CLICK HERE.