aFe 21-90045 Magnum FLOW Pro DRY S Universal Air Filter (5.5" Flange)

Vehicle Fitment

• Universal Fit - Designed for compatible performance intake systems with ~5.5" inlet flange (Not vehicle-specific; verify fitment with intake manufacturer)

Features

• Magnum FLOW Pro DRY S oil-free synthetic media for high airflow and easy maintenance
• Washable and reusable design for repeated cleaning and extended service life
• Pliable polyurethane flange with integrated bumps for a secure, leak-free seal
• Deep, open pleat, conical design enhances airflow over restrictive stock filters
• Three layers of progressively finer mesh for improved dust holding capacity
• Durable 100 % polyurethane top and base construction
• Universal design fits many aftermarket cold air and short ram intake systems
• Oil-free media eliminates messy oil application during maintenance

Specifications

• Part Number: 21-90045
• Filter Media: Pro DRY S synthetic, oil-free
• Flange Inside Diameter: 5.5 in
• Base Outside Diameter: 7.0 in
• Top Outside Diameter: 5.5 in
• Filter Height: 7.0 in
• Shape: Conical performance air filter
• Reusable/Washable: Yes
• Filter Efficiency: ~99.2 % dust capture

Included Components

• 1x aFe Magnum FLOW Pro DRY S Universal Air Filter (21-90045)

Product Description

The aFe 21-90045 Magnum FLOW Pro DRY S Universal Air Filter is a high-flow performance air filter element engineered to improve airflow and filtration efficiency in compatible aftermarket intake systems with a ~5.5" inlet flange. Featuring advanced Pro DRY S synthetic media, this filter delivers excellent airflow while efficiently capturing dust and contaminants, helping support better engine breathing and potential performance gains over restrictive stock filters. Its washable and reusable design significantly reduces long-term maintenance costs.

Constructed with a pliable polyurethane flange with integrated bump seals and a durable top and base, the 21-90045 creates a secure, leak-free fit when clamped into performance intake openings. The deep pleat, conical design increases usable surface area for improved dust holding capacity and longer service intervals. Because this part is a universal filter element rather than tied to specific vehicles, always verify that the filter's flange size and shape match your intake system before installation to ensure proper fit and performance.