K&N® - 77 Series High-Flow Performance Air Intake System

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K&N® - 77 Series High-Flow Performance Air Intake System
K&N® - 77 Series High-Flow Performance Air Intake SystemK&N® - 77 Series High-Flow Performance Air Intake SystemK&N® - Cleaning GuideK&N® - Warranty InformationK&N® - 77 Series High-Flow Performance Air Intake System Installation InstructionsMade In USAK&N Authorized Dealer
$309.99
In Stock - Ships within 24 hrs
2009 Ford Flex
Fits Following Model(s):
  • Legal For Sale Or Use In California.
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Product Details

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K&N Air Intake Systems

Ford Flex 2009, 77 Series High-Flow Performance Aluminum Silver Air Intake System by K&N®. Replacement Filter # RF-1048. Use with Pre-Filter # RF-1048DK. Air Filter Height: 6" (152 mm). Air Filter Large End Diameter: 7.5" (191 mm). Air Filter Material: Cotton Gauze. Air Filter Material: Cotton Gauze. Air Filter Color: Red. Clamp Style: Regular. Estimated HorsePower Gain: 9.19 HP @ 4914 RPM. Intake Pipe Finish: Silver. Intake Pipe Material: Aluminum. CARB EO: D-269-48. Includes: 5 Clamps, 2 Couplers. This intake kit is designed for the larger engines typically found in trucks and SUVs. It replaces the factory air intake system with a free flowing K&N air filter and custom designed air intake tube. Extensive dyno testing improved intake airflow and allows these big engines to develop even more torque and horsepower. The end result is better acceleration you can feel.

Fitment notes: Legal For Sale Or Use In California.

Features:

  • Guaranteed to increase horsepower and improve acceleration
  • Custom designed and engineered for each application
  • Works with OEM computer system
  • Available in various finishes
  • Includes the world's best air filter, the K&N filter
  • Easy to install
  • Up to 100,000 miles between servicing
  • Million Mile limited warranty

The big "deep breathing" engine in your truck or SUV needs a 77 Series High-Flow Performance Air Intake Kit to unleash all of its power. The kit starts with an oversized conical high-flow K&N air filter, installed in place of the restrictive factory airbox. The large increase in filter area over the stock airbox filter results in a huge increase in airflow and a greater capacity to capture and hold dirt.

The increased airflow continues with a free-flowing mandrel-bent aluminum intake tube in place of the factory air path. The intake tube is available in several finishes. Most kits also include a heat shield that seals against the hood and isolates the filter from engine heat. The reduction in air intake temperature results in a cooler, denser air intake charge and even more horsepower. All components are mounted and connected with high quality materials such as steel, aluminum, silicon or reinforced nylon, to ensure long life.

K&N uses a dynamometer to design its air intake kits to make the most horsepower possible. But their power figures aren't based on just one vehicle, but rather an average of runs by a number of vehicles. This means repeatable numbers and horsepower claims you can count on.

Every 77 Series High-Flow Performance Air Intake Kit comes complete with everything necessary for installation, including comprehensive installation instructions. The K&N filter can go up to 100,000 miles before cleaning is required. And the K&N air filter is guaranteed for one million miles.

K&N® is the inventor and leading innovator of reusable cotton gauze filter technology for automotive applications. The first K&N filter was conceived for racing over 40 years ago and a performance enthusiast mindset continues today throughout all levels of the company. K&N is the sales and brand leader for performance filters, including an extensive line of factory replacement filters and performance air intake kits. The company actively promotes the environmental, economical and performance advantages of long-life reusable cotton gauze filters.

Warranty Information

Find out everything you need to know about the product warranty

MILLION MILE LIMITED WARRANTY
K & N O/E Replacement Air Filters and Air Intake Systems purchased from Authorized Dealers are backed by a Million Mile Limited Warranty when used primarily on paved roads and on vehicles for which they were designed. If one of these products ever fails to provide complete satisfaction, K&N will replace it.

INCORRECT CLEANING OR USE VOIDS WARRANTY
K&N Aftermarket Air Filters should be cleaned every 50,000 miles for normal highway use, more often in dusty conditions. Cleaning should be done with K&N cleaner and air filter oil (or comparable air filter cleaner and oil). Use of compressed air, or chemicals not specifically designed to clean and re-oil cotton air filters (i.e. gasoline, transmission fluid, motor oil, lightweight oil, or diesel fuel) will void the warranty. Any damaged, abused or modified K&N Air Filters will not be warranted.

REPLACEMENT
Any K&N product returned to K&N will need a Return Goods Authorization number and must be sent at customers' expense along with proof of purchase.

EXTENT OF WARRANTY
Any defective K&N Air Filter properly returned to K&N will be replaced. K&N reserves the right to determine whether the terms of the warranty, set out above, have been properly complied with. In the event that the terms are not complied with, K&N shall be under no obligation to honor this warranty. K&N will not be responsible for any indirect, consequential, special, contingent, or other damages.

CONSUMER PROTECTION PLEDGE
We want to make sure that when you buy a K&N Lifetime Air Filter or Air Intake System, you can be confident your vehicle's warranty will not be impacted. We also want you to feel confident that even if you experience difficulties with a dealership repair department, we will step-in and resolve the issue, so you won't have to. Therefore, K & N makes the following Pledge: K&N pledges to their customers that they will not be taken advantage of and charged for a repair due to a manufacturer warranty denial blamed on the presence of a K&N product.

Magnuson-Moss Warranty Act:
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More
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