aFe 21-90041 Magnum FLOW Pro DRY S Universal Air Filter (4.5" Flange)

Vehicle Fitment

• Universal Fit - Designed for compatible performance intake systems with ~4.5" 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 multiple cleanings and extended service life
• Pliable polyurethane flange with integrated bumps for a secure, leak-free seal
• Deep, open pleat design increases usable surface area for improved airflow
• Conical performance shape enhances engine breathing over stock filters
• Durable 100% polyurethane top and base construction
• Universal design fits many aftermarket cold air and short ram intake systems
• Oil-free media eliminates messy oiling during maintenance cycles

Specifications

• Part Number: 21-90041
• Filter Media: Pro DRY S synthetic, oil-free
• Flange Inside Diameter: 4.50 in
• Base Outside Diameter: ~8.50 in
• Top Outside Diameter: ~6.00 in
• Filter Height: ~8.00 in
• Shape: Conical performance air filter
• Reusable/Washable: Yes

Included Components

• 1x aFe Magnum FLOW Pro DRY S Universal Air Filter (21-90041)

Product Description

The aFe 21-90041 Magnum FLOW Pro DRY S Universal Air Filter is a high-flow performance filter element engineered to improve airflow and filtration efficiency in compatible aftermarket intake systems with a ~4.5" inlet flange. Utilizing advanced Pro DRY S oil-free synthetic media, this filter delivers excellent airflow while efficiently capturing dust and contaminants. Its washable and reusable design helps reduce long-term maintenance costs compared with disposable stock paper filters.

Constructed with a pliable polyurethane flange and durable top and base, the 21-90041 creates a secure, leak-free seal when clamped into performance intake openings. The deep pleat design increases usable surface area, supporting extended service intervals and improved engine breathing. Because this is a universal filter element rather than a vehicle-specific part, always verify that your intake system accepts a ~4.5" flange filter before installation for proper fit and performance.