Have Questions?
Professional-grade parts used trackside.
Expert help during business hours.
Encrypted checkout & trusted payments.
Orders ship quickly from regional warehouses.
The aFe MagnumFLOW replacement air filter with part number AFE21-90037 is designed to optimize your vehicle's airflow and filtration efficiency. Featuring three layers of progressively finer mesh synthetic media sandwiched between a durable polyurethane top and base, this high-performance filter ensures maximum dust holding capacity and excellent airflow. The tall, open pleats provide a larger surface area for filtration, resulting in longer service intervals and easier maintenance. The washable and reusable design allows for multiple cleanings, making it a cost-effective solution for everyday driving or off-road adventures. The pliable polyurethane flange with integrated bumps guarantees a tight, leak-proof seal throughout the filter's lifespan, maintaining optimal engine performance and protection. With a filter efficiency of 99.2%, this filter effectively captures airborne contaminants, ensuring cleaner air intake and improved engine longevity.
Features:
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
