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The K&N Engineering Universal Rubber Air Filter (Part #RU-5111) offers versatile performance for a wide range of applications including racing vehicles, generators, snowmobiles, tractors, and more. Designed to adapt to various angles and offset diameters, this filter ensures optimal airflow and filtration efficiency across different equipment setups. Its durable molded pliable rubber flange absorbs vibrations, providing a secure fit while allowing for stretchability of up to 1/16 inch to accommodate slight size variations, making installation straightforward and reliable. Constructed with high-quality materials, the filter*s design prioritizes durability and ease of maintenance, as it is washable and reusable, saving both time and money over disposable alternatives.
The filter features a 3 1/2 inch top opening and a 5 3/4 inch height, making it suitable for many custom and off-road applications. Its robust rubber flange ensures a tight seal to prevent unfiltered air from bypassing, while its flexible construction allows for secure attachment even in challenging angles. This universal filter is built to withstand demanding environments, offering long-lasting performance with minimal upkeep. Please note that this filter is not CARB approved and requires acknowledgment of this status during installation.
Ideal for users seeking a reliable, reusable air filtration solution, the K&N Universal Rubber Air Filter combines versatility with durability. Its compact design and high-quality construction make it an excellent choice for various automotive and equipment applications, ensuring clean airflow and enhanced engine performance. Whether replacing a worn filter or customizing your setup, this filter provides a dependable, cost-effective option to meet your needs.
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).
