aFe 20-91059 MagnumFLOW Round Racing Air Filter

The aFe MagnumFLOW Round Racing Filter is a high-performance replacement air filter engineered for maximum airflow and superior filtration. Constructed with 100% polyurethane on all sides, this washable and reusable filter outflows restrictive stock paper filters to deliver improved horsepower and torque.

Key Features:

• Multiple layers of progressively finer mesh media for optimal filtration efficiency
• Tall, open, evenly-spaced pleats provide excellent dust holding capacity for extended service intervals
• Integrated urethane bump seal ensures a tight, leak-free fit throughout the filter's life
• Washable and reusable for multiple cleaning cycles—cost-effective and environmentally friendly

Available Filter Media Options:

Pro DRY S (Oil-Free Synthetic):

• 99.2% filtration efficiency with no oil required
• Easiest maintenance—simply clean and reinstall
• Ideal for gas and diesel vehicles in street and dusty conditions

Pro 5R (Oiled Cotton Gauze):

• 98.6% filtration efficiency with maximum airflow for horsepower gains
• Perfect balance of performance and protection
• Best suited for gas and diesel street vehicles

Pro GUARD 7 (Premium Oiled Media):

• 99.7% filtration efficiency—the highest level of engine protection available
• Engineered specifically for demanding diesel and off-road applications
• Excels in extreme and very dusty driving conditions

Superstock IRF (Progressive Media):

• Progressive cotton gauze and/or synthetic media with depth-loading dust capacity
• Rounded open pleats for better airflow and lower face pressure resistance
• Expanded metal and epoxy-coated aluminum wire mesh for maximum strength and turbo protection

This filter does not require a CARB EO number. Choose the media type that best matches your performance needs and driving conditions.