Have Questions?
Professional-grade parts used trackside.
Expert help during business hours.
Encrypted checkout & trusted payments.
Orders ship quickly from regional warehouses.
Upgrade your vehicle's airflow with the K&N Engineering Inlet Boost Tubes, part number KNN63-2621, designed specifically for 2021 Ford Expedition and F-150 models. These high-performance tubes run from the air intake to the turbocharger, effectively eliminating restrictive sections found in stock inlet tubes to promote increased airflow. This enhanced airflow supports faster turbo spool times and contributes to improved engine response and overall power output. When paired with a compatible K&N intake system, these boost tubes can unlock additional performance benefits, making them an excellent upgrade for enthusiasts seeking increased horsepower and throttle response.
Constructed with quality materials, the K&N Inlet Boost Tubes are engineered to withstand the rigors of daily driving and demanding conditions. Their design ensures a precise fit and optimal airflow, reducing turbulence and maximizing efficiency. These tubes are ideal for those looking to enhance their vehicle's performance without extensive modifications. Additionally, their compatibility with specific 2021 Ford F-150 and Expedition models makes installation straightforward, providing a reliable upgrade for both casual drivers and performance enthusiasts.
Note that these boost tubes are not CARB approved but are acknowledged for use with proper modifications. They are not restricted by air freight regulations, making shipping and installation convenient. The product complies with Prop 65 standards, ensuring safety and environmental responsibility. Trust the K&N brand for quality and performance, and enjoy the benefits of improved airflow and engine responsiveness with these durable, performance-oriented inlet boost tubes.
Features:
Fitment:
2021 Ford Expedition King Ranch
2021 Ford Expedition Limited
2021 Ford Expedition Max King Ranch
2021 Ford Expedition Max Limited
2021 Ford Expedition Max Platinum
2021 Ford Expedition Max SSV
2021 Ford Expedition Max XLT
2021 Ford Expedition Platinum
2021 Ford Expedition SSV
2021 Ford Expedition XLT
2021 Ford F-150 King Ranch
2021 Ford F-150 Lariat
2021 Ford F-150 Limited
2021 Ford F-150 Platinum
2021 Ford F-150 Police Responder
2021 Ford F-150 Raptor
2021 Ford F-150 SSV
2021 Ford F-150 Tremor
2021 Ford F-150 XL
2021 Ford F-150 XLT
2022 Ford Expedition King Ranch
2022 Ford Expedition Limited
2022 Ford Expedition Max King Ranch
2022 Ford Expedition Max Limited
2022 Ford Expedition Max Platinum
2022 Ford Expedition Max SSV
2022 Ford Expedition Max XL
2022 Ford Expedition Max XLT
2022 Ford Expedition Platinum
2022 Ford Expedition SSV
2022 Ford Expedition Timberline
2022 Ford Expedition XL
2022 Ford Expedition XLT
2022 Ford F-150 King Ranch
2022 Ford F-150 Lariat
2022 Ford F-150 Limited
2022 Ford F-150 Platinum
2022 Ford F-150 Police Responder
2022 Ford F-150 Raptor
2022 Ford F-150 SSV
2022 Ford F-150 Tremor
2022 Ford F-150 XL
2022 Ford F-150 XLT
2023 Ford Expedition King Ranch
2023 Ford Expedition Limited
2023 Ford Expedition Max King Ranch
2023 Ford Expedition Max Limited
2023 Ford Expedition Max Platinum
2023 Ford Expedition Max SSV
2023 Ford Expedition Max XLT
2023 Ford Expedition Platinum
2023 Ford Expedition SSV
2023 Ford Expedition Timberline
2023 Ford Expedition XL
2023 Ford Expedition XLT
2023 Ford F-150 King Ranch
2023 Ford F-150 Lariat
2023 Ford F-150 Limited
2023 Ford F-150 Platinum
2023 Ford F-150 Police Responder
2023 Ford F-150 Raptor
2023 Ford F-150 SSV
2023 Ford F-150 Tremor
2023 Ford F-150 XL
2023 Ford F-150 XLT
2024 Ford Expedition King Ranch
2024 Ford Expedition Limited
2024 Ford Expedition Max King Ranch
2024 Ford Expedition Max Limited
2024 Ford Expedition Max Platinum
2024 Ford Expedition Max SSV
2024 Ford Expedition Max XLT
2024 Ford Expedition Platinum
2024 Ford Expedition SSV
2024 Ford Expedition Timberline
2024 Ford Expedition XL STX
2024 Ford Expedition XLT
2024 Ford F-150 King Ranch
2024 Ford F-150 Lariat
2024 Ford F-150 Platinum
2024 Ford F-150 Police Responder
2024 Ford F-150 Raptor
2024 Ford F-150 SSV
2024 Ford F-150 Tremor
2024 Ford F-150 XL
2024 Ford F-150 XLT
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).
