aFe 21-91050 Magnum FLOW Pro DRY S Universal Air Filter (5.5" Flange)

Vehicle Fitment

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

Features

• Magnum FLOW Pro DRY S oil-free synthetic media for high airflow and easy maintenance
• Washable and reusable design for multiple cleaning cycles and extended service life
• Pliable polyurethane flange with integrated bump seals for secure, leak-free installation
• Deep, open pleat conical design increases usable surface area for improved dust holding
• Conical performance shape enhances engine breathing compared with stock filters
• High filtration efficiency with excellent dust capture performance
• Durable 100 % polyurethane top and base construction for long-lasting performance
• Universal design fits many aftermarket cold air, short ram, and performance intake systems

Specifications

• Part Number: 21-91050
• Filter Media: Magnum FLOW Pro DRY S synthetic, oil-free
• Flange Inside Diameter: 5.5 in
• Base Outside Diameter: ~8.50 in
• Top Outside Diameter: ~6.75 in
• Filter Height: ~8.00 in
• Shape: Conical, performance-oriented air filter
• Reusable/Washable: Yes
• Filtration Efficiency: High airflow with strong dust capture

Included Components

• 1x aFe Magnum FLOW Pro DRY S Universal Air Filter (21-91050)

Product Description

The aFe 21-91050 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 oil-free synthetic media, this filter delivers excellent airflow while effectively capturing dust and contaminants, helping support enhanced engine breathing and throttle response compared with restrictive stock paper filters. Its washable and reusable design extends service life and reduces long-term maintenance costs.

Constructed with a pliable polyurethane flange with integrated bump seals and a rugged polyurethane top and base, the 21-91050 creates a secure, leak-free fit when clamped into performance intake openings. The conical shape and deep, open pleat design increase usable surface area, improving dust holding capacity and extending service intervals. Because this is a universal fit filter element rather than vehicle-specific, always verify that the filter's flange size and overall dimensions match your intake system before installation to ensure proper fit and performance.