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 81-0813 Air Oil Separator is designed specifically for Toyota Tacoma models with a 3.5L engine from 2016 to 2023, providing an effective solution to prevent engine oil blowby from reaching the intake tract. This high-capacity reservoir captures excess oil, helping to maintain engine performance and protect against power loss and potential engine damage caused by oil vapors. The device is engineered for easy installation, requiring only about 30 minutes with basic hand tools, and features factory-style hose connections that snap on quickly for a secure fit. Its compact design allows for flexible mounting options within the engine bay, replacing the factory line from the crankcase and offering convenient access for checking and emptying the reservoir without the need for additional tools. Built with durability and efficiency in mind, the K&N Air Oil Separator is a reliable upgrade for maintaining engine health and ensuring optimal performance over time. Backed by K&N's No-Hassle Lifetime Limited Warranty, this component offers long-term value and peace of mind for vehicle owners who demand quality and reliability in their automotive accessories.
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).
