K&N 57-2531 FIPK AIR INTAKE SYSTEM
K&N 57-2531 FIPK AIR INTAKE SYSTEM is backordered and will ship as soon as it is back in stock.
Shipping & delivery
Usually ships in 2–3 business days unless a different lead time is shown on this page. Shipping cost is calculated at checkout (UPS or USPS to the contiguous U.S.).
Shipping policy · Returns · Fitment questions? (561) 207-7988
Delivery and Shipping
Delivery and Shipping
Standard order processing is 2–3 business days unless this product or your order confirmation states a different lead time. Custom-built, made-to-order, backorder, and pre-order items follow their stated lead times.
Enclosures and subwoofer boxes ship for $50 per unit. Other shipping charges are calculated at checkout. Orders outside the contiguous 48 United States may require additional shipping; we will contact you for approval before shipment.
Subwoofer boxes ship UPS Ground where available. Read our Shipping Policy and Return and Refund Policy for delivery, product-specific return windows, and warranty details.
K&N 57-2531 FIPK AIR INTAKE SYSTEM is backordered and will ship as soon as it is back in stock.
Description
Description
K&N FIPK Air Intake System – 57-2531
Ford F-250 / F-350
Upgrade your factory intake system with the K&N 57-2531 FIPK Air Intake, engineered to increase horsepower, improve throttle response, and enhance engine sound while maintaining full street legality.
This system replaces the entire restrictive factory air intake assembly, allowing your engine to breathe more efficiently across the entire RPM range.
🔥 Key Benefits
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Guaranteed Horsepower Increase
Reduced intake restriction delivers measurable power gains -
Improved Throttle Response & Engine Sound
Smoother, straighter airflow improves drivability and acceleration -
Free-Flow Intake Tube
High-density polyethylene tube is aerodynamically engineered for maximum airflow -
Washable & Reusable Air Filter
Oversized cone-style K&N filter lasts up to 100,000 miles between services (driving conditions dependent) -
Heat Shield Design
Installs into the factory lower air cleaner assembly to help isolate intake air from engine heat -
Retains Factory Sensors
Accommodates the OEM air temperature sensor and air filter restriction gauge
🛠️ Installation & Fitment
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Easy Bolt-On Installation
Uses factory mounting points
Typical install time: 90 minutes or less -
Basic Tools Required
Screwdriver, ratchet set, and common wrenches -
Street Legal in All 50 States
📦 What’s Included
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K&N high-flow reusable air filter
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Intake tube
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Heat shield
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All necessary hardware and installation instructions
🛡️ Warranty
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K&N Million Mile Limited Warranty
🚗 Fitment
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Fits select Ford F-250 and F-350 models
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Refer to vehicle application guide for exact compatibility
If you’re looking to unlock more airflow, stronger throttle response, and long-term reliability without sacrificing legality or drivability, the K&N 57-2531 FIPK Intake System is a proven upgrade for your Ford Super Duty.
Fitment & installation
Fitment & installation
Check the selected part against your vehicle. Need help? Call (561) 207-7988.
Selected part: 57-2531
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Read FOX’s application notes for part 987-24-001 (rear shock)
Payment & Security
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