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The K&N Engineering RU-3112HBK Universal Air Filter is designed for versatile performance and durability in a wide range of automotive applications. Crafted from Dryflow oil-free synthetic media, this filter ensures high airflow with low restriction, helping your engine breathe easier and perform optimally. Its clamp-on design allows for easy installation and removal, making it suitable for various custom and replacement setups. When the filter becomes dirty, it can be conveniently washed using K&N synthetic air filter cleaner, providing a reusable and cost-effective solution for maintaining peak engine performance. This air filter features a 4-inch flange diameter, a 6-inch base, and a 5.25-inch top outer diameter, with an overall height of approximately 9.25 inches, ensuring compatibility with numerous intake systems.
Constructed with high-quality synthetic media, the K&N RU-3112HBK offers excellent filtration efficiency while maintaining minimal airflow restriction. Its black finish adds a sleek look to your engine bay and helps resist dirt and grime buildup. The filter's durable construction makes it suitable for repeated washing and reuse, supporting environmentally friendly practices and reducing long-term expenses. Please note that this filter is not CARB-approved but does require acknowledgment of CARB regulations for certain applications. It is a reliable choice for automotive enthusiasts seeking a reusable, high-performance air filter that combines ease of maintenance with effective filtration capabilities. Whether upgrading your existing intake system or customizing a new setup, the K&N RU-3112HBK provides the performance, durability, and ease of use you need for optimal engine operation.
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).
