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Upgrade your vehicle's airflow with the K&N Engineering Part Number knn57-2561 performance intake kit, designed specifically for select Ford Ranger and Mazda B4000 models equipped with a 4.0L V6 engine. This system features a high-density polyethylene (HDPE) rotationally-molded tube that enhances the volume of incoming air, resulting in a guaranteed increase in horsepower and torque. The durable, lightweight tube is engineered to withstand the rigors of daily driving while maintaining optimal airflow and performance.
The kit includes a washable, reusable High-Flow Air Filter with oiled cotton filter media, allowing for up to 100,000 miles of service under normal highway driving conditions. Its oversized, conical shape maximizes airflow and filtration efficiency, contributing to improved engine performance and fuel efficiency. A custom heat shield is incorporated to protect the intake air from high engine bay temperatures, ensuring cooler, denser air reaches the engine for better combustion and power output.
Designed for ease of installation, the entire system can typically be installed in less than 90 minutes without specialized tools. This intake kit complies with EPA standards and is CARB EO approved under number D-269-48, making it a reliable choice for those looking to boost performance while adhering to emissions regulations. Please note that some applications may not be legal for sale or use on pollution-controlled vehicles in California. Backed by the K&N No-Hassle Lifetime Limited Warranty, this performance intake kit offers durability and peace of mind for your vehicle enhancement needs.
Features:
Fitment:
2004 Ford Ranger Edge
2004 Ford Ranger Tremor
2004 Ford Ranger XLT
2004 Mazda B4000 Base
2004 Mazda B4000 DS
2004 Mazda B4000 SE
2005 Ford Ranger Edge
2005 Ford Ranger FX4
2005 Ford Ranger XL
2005 Ford Ranger XLT
2005 Mazda B4000 Base
2005 Mazda B4000 SE
2006 Ford Ranger FX4
2006 Ford Ranger Sport
2006 Ford Ranger STX
2006 Ford Ranger XL
2006 Ford Ranger XLT
2006 Mazda B4000 Base
2006 Mazda B4000 SE
2007 Ford Ranger FX4
2007 Ford Ranger Sport
2007 Ford Ranger STX
2007 Ford Ranger XL
2007 Ford Ranger XLT
2007 Mazda B4000 Base
2007 Mazda B4000 SE
2008 Ford Ranger FX4
2008 Ford Ranger Sport
2008 Ford Ranger XL
2008 Ford Ranger XLT
2008 Mazda B4000 Base
2008 Mazda B4000 SE
2009 Ford Ranger FX4
2009 Ford Ranger Sport
2009 Ford Ranger XL
2009 Ford Ranger XLT
2009 Mazda B4000 Base
2010 Ford Ranger Sport
2010 Ford Ranger XL
2010 Ford Ranger XLT
2011 Ford Ranger Sport
2011 Ford Ranger XL
2011 Ford Ranger 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).
