Have Questions?
Professional-grade parts used trackside.
Expert help during business hours.
Encrypted checkout & trusted payments.
Orders ship quickly from regional warehouses.
The K&N Engineering Universal Tapered Air Filter (Part Number: KNNU-3250) is designed to deliver reliable airflow and filtration for a wide range of applications, including racing vehicles, generators, snowmobiles, tractors, and radio-controlled cars. Constructed with durable, ultra-strong molded pliable rubber flanges, this filter absorbs vibrations and ensures a secure attachment, while also allowing for slight stretching to fit varying intake sizes. Its tapered design features a 3.125-inch flange ID, a 5-inch base outer diameter, a 3.5-inch top outer diameter, and stands approximately 6 inches tall, making it versatile for many setups. The filter's washable and reusable construction offers long-term value and consistent performance. It is important to note that this product is not CARB-approved, and acknowledgment of CARB-related compliance is required before installation. The filter's high-quality materials and flexible design make it an ideal choice for enthusiasts seeking adaptable and durable air filtration solutions across different machinery types. Easy to install and maintain, this universal filter enhances engine performance by providing a steady supply of clean air, contributing to optimal power output and efficiency while reducing the need for frequent replacements. Suitable for various angles and offset diameters, the K&N Universal Tapered Air Filter ensures a snug fit in diverse equipment, making it a dependable addition to your maintenance toolkit.
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).
