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The K&N Engineering Universal Rubber Air Filter (Part Number: knnRU-1770) is designed to provide reliable airflow filtration for a wide range of applications including racing vehicles, generators, snowmobiles, tractors, and radio-controlled cars. Constructed with durable, molded pliable rubber flanges, this filter absorbs vibrations and ensures a secure attachment, even accommodating slight variations in size with stretchability up to 1/16 inch (1.5mm). Its versatile design makes it suitable for installations at various angles and offset diameters, making it a flexible choice for different equipment setups. The filter's high-quality construction ensures longevity and consistent performance over time. It is washable and reusable, allowing users to maintain optimal airflow without the need for frequent replacements, which contributes to cost savings and environmental sustainability. This universal filter is an excellent option for those seeking a durable, adaptable, and easy-to-maintain air filtration solution for their equipment. Please note that this product is not CARB approved and requires acknowledgment of CARB regulations if applicable. Its compact size and robust build make it a dependable component for improving engine performance across various automotive and recreational applications.
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).
