Brand | K&N |
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Product Dimensions | 22.44"L x 14.17"W x 12.6"H |
OEM Part Number | 57-2581 |
Shape | Oblong |
Manufacturer | K&N Engineering |
Model | 57-2581 |
Item Weight | 9.98 pounds |
Country of Origin | USA |
Item model number | 57-2581 |
Exterior | Machined |
Manufacturer Part Number | 57-2581 |
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K&N Cold Air Intake Kit: Increase Acceleration & Towing Power, Guaranteed to Increase Horsepower up to 12HP: Compatible with 5.0L, V8, 2011-2014 Ford F150, 57-2581
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Purchase options and add-ons
Brand | K&N |
Product Dimensions | 22.44"L x 14.17"W x 12.6"H |
OEM Part Number | 57-2581 |
Shape | Oblong |
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About this item
- GUARANTEED INCREASE IN HORSEPOWER & TORQUE: K&N cold air intake systems provide a less restrictive path for airflow, increasing the volume of cool, oxygen-rich air into your engine and giving an estimated increase up to 12HP and up to 13 ft.lbs. of Torque
- HEAR THE GROWL: K&N’s intake systems allow your engine to breathe and sound as it should- your engine will growl on acceleration and return to quiet once at speed
- DYNO TESTING YOU CAN TRUST: K&N air intake horsepower/torque testing is performed on wheel-based dynamometers and the reports are include with each intake system
- BETTER TOWING: Air intake kit improves acceleration and uphill performance when towing by improving throttle response and overall horsepower and torque
- FEATURING K&N’s SIGNATURE, REUSABLE AIR FILTER: Combines 4 layers of pleated, breathable cotton with K&N’s red filter oil to absorb dirt and dust particles, allowing clean air to continue flowing into your engine, only needs cleaning every 100,000 miles under normal highway driving conditions
- DURABLE ROTO-MOLDED INTAKE TUBE & CUSTOM HEAT SHIELD: A high-density polyethylene (HDPE) rotationally-molded intake tube helps increase the volume of airflow to your engine, while the heat shield helps protect intake air from the high temperature of your engine bay
- PREMIUM ENGINE PROTECTION FROM A TRUSTED BRAND: K&N air intake will not void manufacturer vehicle warranty & No-Hassle Lifetime Limited Warranty protects for the life of your vehicle
- EASY TO INSTALL: Includes detailed, step-by-step instructions & all necessary parts- the entire air intake system can typically be installed in less than 60 minutes with basic hand tools
- MADE IN THE USA: Proudly made in the USA for trusted quality & reliability and backed by US based customer support
Frequently bought together
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From the manufacturer
How Does a Cold Air Intake Work and Why Should I Replace the One That Came With My Vehicle?
In a standard air intake system, air passes through a disposable paper filter and then flows into the engine through a complex system of tubing. K&N cold air intake systems provide a less restrictive path for airflow, increasing the volume of cool, oxygen-rich air into your engine. A performance air filter is paired with specially designed tubing and a custom air box or heat shield (engineered to protect the intake air from the heat of the engine), which in combination deliver a guaranteed increase in horsepower and torque.
Legendary K&N Quality & Reliability
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Increased Horsepower & Torque- GuaranteedYes, K&N intakes really do increase horsepower and torque; in fact, it's guaranteed. Each intake kit undergoes significant testing to help ensure that the air filter and intake tube are positioned to deliver large increases in airflow and horsepower. |
Less Restriction = More Engine GrowlBy removing excess stock baffles, you get to enjoy a satisfying engine growl on acceleration that returns to quiet once at speed. The amount of growl is all in your hands… or should we say feet. Growl while accelerating on the open road and return to quiet as you drive through your neighborhood. |
Proudly Made in the USAK&N products are designed and manufactured on-site, and all of our Cold Air Intakes are made in the USA. K&N is headquartered in Riverside, California, and also operates facilities in Grand Prairie, Texas. Our US based, knowledgeable customer support staff is available to assist you with any questions or concerns. |
No Substitution for the Original- The Difference a K&N Filter Makes in Your Vehicle
Increased performance starts with K&N’s reusable, air filter, which combines layers of pleated, breathable cotton with K&N’s signature red filter oil. Paper air filters, while efficient, can become quickly clogged as their pores fill with dirt and debris. K&N’s oiled cotton filter absorbs dirt and dust particles rather than physically blocking them. The tacky, oiled particles that collect in the filter become an asset to the filtration rather than an obstacle, capturing new particles entering the system while still allowing a high volume of airflow to pass through. This allows clean air to continue flowing into your engine.
Unlike disposable paper filters, which typically last for 12-15,000 miles before they must be replaced, the high-performance K&N filter included with your intake can go up to 75,000 miles before needing to be cleaned (under normal driving conditions).
K&N Cold Air Intakes- Frequently Asked Questions
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Why is Dyno Testing Important & How Can I Tell if It’s Accurate?K&N's air intake horsepower/torque testing is performed at our in-house facilities in Riverside, CA on wheel-based dynamometers and help provide a power estimate that is likely to more closely reflect real-world conditions than an engine-based dynamometer. K&N’s standard testing is designed to measure relative power differences on a vehicle with and without K&N products installed, and SAE (Society of Automotive Engineers) correction factors are utilized to help ensure accuracy. If you notice horsepower claims from other manufacturers that seem too good to be true, we encourage you to do your own research. Check the dynamometer reports for vehicles, dates tested, and if correction factors are used. |
How Does a K&N Intake Protect Your Engine?Most disposable paper filters create a large amount of airflow restriction, as the openings in the filter media have to be extremely small to filter efficiently—which slows airflow. Because dust accumulates on the surface of the disposable filter and blocks the openings in the media, the filter will typically become increasingly more restrictive to airflow over time. Conversely, K&N oiled filters are engineered to become more efficient over their recommended service life as dirt and contaminants are integrated into the filter media, while still allowing a high volume of air through to the system. This allows you to continue to get the performance you expect from your K&N intake, while also being able to rely on the cutting-edge efficiency and protection that a K&N oiled air filter provides. |
What's the Difference Between a Roto-Molded and an Aluminum Intake Tube?Both a Roto-Molded and an Aluminum Intake Tube from K&N provide the same increase of air flow to your engine. It all comes down to how you want it to look in your vehicle. If you enjoy a more custom look under the hood, the Aluminum Tube is a great choice. |
What Does the Heat Shield Do and Is That Better Than a Closed Air Box?Both the custom heat shield and HDPE air box help protect the incoming air from the heat of your engine. They both have unique features and which one you choose is a personal preference based on those features. High-performance drivers may want an open filter element and heat shield for even greater airflow. Off-roaders may prefer an intake system with a custom air box, which helps protect against dust, dirt, and moisture and offers additional filter protection from extremely dirty environments or water crossings. Options with an enclosed air box give you the freedom to adventure while offering easy access to the air filter for quick cleaning and maintenance — no special tools required. |
Easy to Install
Installing an intake kit might seem intimidating, especially if it's your first DIY car modification, but thankfully you don't have to be a seasoned mechanic to successfully install a cold air intake yourself. While every kit is slightly different (since they are designed to be a perfect fit in the engine bay of specific year/make/models), installation can typically be completed in 60 minutes or less and requires only simple hand tools. Detailed, step-by-step instructions are included with each kit.
Tools Typically Needed for Installation
- Ratchet
- Extension
- 10mm socket & 14mm socket
- Allen key
- Flat blade screwdriver
- Phillips screwdriver
- 10mm wrench
- Pliers
Product Description
K&N air intake systems are engineered for increased performance, outstanding durability, and sleek aesthetics—and are available in an assortment of finishes and powder coatings. K&N’s state-of-the-art High-Flow Air Filter helps to shield your engine from contaminants, while a meticulously engineered aerodynamic tube design contributes to a guaranteed increase in horsepower and torque. K&N air intake systems are designed to improve acceleration, towing, and throttle response while providing world class protection for your engine. Our intakes are dyno-tested and provide more airflow compared to OEM intake systems. K&N intakes are easy to install and maintain with air filter cleaning required only every 100,000 miles. Replacement Air Filter: RU-5173
Vehicle Fitment: 2011-2014 FORD F150
Product information
Technical Details
Additional Information
ASIN | B015ORDALO |
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Customer Reviews |
4.5 out of 5 stars |
Best Sellers Rank | #169,079 in Automotive (See Top 100 in Automotive) #119 in Automotive Replacement Air Intake Filters |
Date First Available | September 22, 2015 |
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This Item K&N Cold Air Intake Kit: Increase Acceleration & Towing Power, Guaranteed to Increase Horsepower up to 12HP: Compatible with 5.0L, V8, 2011-2014 Ford F150, 57-2581 | Recommendations | dummy | dummy | dummy | dummy | |
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Price | $299.99$299.99 | $299.99$299.99 | -13% $347.30$347.30 List: $399.99 | $299.99$299.99 | $94.99$94.99 | -14% $299.99$299.99 List: $349.99 |
Delivery | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tuesday, Apr 2 | Get it Apr 3 - 5 | Get it as soon as Tuesday, Apr 2 |
Customer Ratings | ||||||
Easy to install | 4.6 | — | 4.2 | — | — | 4.8 |
Value for money | 4.0 | — | 4.5 | — | — | 4.1 |
Mileage | 3.9 | — | 4.1 | — | — | 4.1 |
Sold By | Amazon.com | Amazon.com | Amazon.com | Amazon.com | Velocity Concepts | Amazon.com |
material | Polyethylene, Aluminum, Cotton, Carbon Fiber | Cotton | Aluminum, Cotton | Alloy Steel | Aluminum | Polyethylene |
model number | 57-2581 | 400-299 | 77-2617KC | 57-2514-4 | — | 63-2590 |
fit type | Vehicle Specific Fit | Vehicle Specific Fit | Vehicle Specific Fit | Vehicle Specific Fit | Vehicle Specific Fit | Vehicle Specific Fit |
product grade | Replacement Part | Performance Part | Performance Part | Replacement Part | Performance Part | Performance Part |
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the sound quality, ease of installation, performance, and quality of the engine air filter. For example, they mention that it totally changes the sound and handling of the truck, it's super easy to install, and can be accomplished by a novice with minimal hand tools. That said, opinions are mixed on fuel efficiency.
AI-generated from the text of customer reviews
Customers like the sound quality of the engine air filter. They say it has a big, throaty sound when they step on it. Some say that it totally changes the sound and handling of the truck. Some customers also mention that it's not noisy during normal driving conditions. However, some customers have concerns about the integrity of the intake.
"...I was very pleasantly surprised at how awesome my truck sounds now. SO aggressive!..." Read more
"...Sound ~ WOW!!!!!! My 2013 F150 with the Coyote 5.0 really sounds awesome, get on the highway at 40-50mph and stomp it down and everyone in a 30..." Read more
"..."noisy" when slamming on the gas, other than that it adds an awesome sound under the hood...." Read more
"...Throttle responds so quick. It sounds great and added a nice deep tone to the truck...." Read more
Customers find the installation of the engine air filter to be super easy, with easy instructions. They also say it's fairly simple and can be accomplished by a novice with minimal hand tools. Customers also mention that the sound change for such a simple upgrade is very addictive.
"...That sound change for such a simple upgrade is very addictive. I will definitely buy again for my next truck." Read more
"Super easy to install and even with me getting on it to hear the v8 roar now I've gained 2.3 mpg even with bigger tires and leveling kit...." Read more
"Ok, here's the scoop pull up a chair.........Install ~ Easy just take your time don't over tighten or strip screws easy peasy 25..." Read more
"...a piece from an auto parts store, but even drunk this was incredibly easy to install...." Read more
Customers are satisfied with the performance of the engine air filter. For example, they mention it improves throttle response, and the sound is awesome. Some say that the air intake looks great and performs better. Overall, most are happy with their purchase and recommend it to others.
"...SO aggressive! I can definitely feel a quicker throttle response and more horse power...." Read more
"...Throttle responds so quick. It sounds great and added a nice deep tone to the truck...." Read more
"...Got another mpg from it and throttle is peppy at take off. Great buy!" Read more
"...After installing the air filter I notice no gain in performance and a drop in mileage of about 2mpg and I drive my truck easy as I want it to last." Read more
Customers like the quality of the engine air filter. They say it's a great product, with excellent fit and finish. Some mention that it gives their truck a throaty sound and is much happier with the increased air flow. Overall, customers are satisfied with the quality and performance of the air filter, which is easy to install.
"...It took me maybe 20 minutes tops. All the parts are high quality and came for a great price...." Read more
"Was delivered super fast. Great product and was as advertised. Super easy, quick installation on my 2014 f150 5.0...." Read more
"...'ll say that I think K&N makes great products and the quality and fit a finish were excellent...." Read more
"...I have installed several other K&N kits before on other vehicles, same great quality and everything needed included...." Read more
Customers like the value of the engine air filter. They mention it's well worth the price and provides inexpensive horsepower.
"...All the parts are high quality and came for a great price. I was very pleasantly surprised at how awesome my truck sounds now. SO aggressive!..." Read more
"...Got another mpg from it and throttle is peppy at take off. Great buy!" Read more
"...Definitely worth the money if your trying to add a couple HP and add a deep sound to your engine...." Read more
"...faster and hotter rods in town....but for the money...this is inexpensive horsepower. Installation was easy...I'm pretty methodical... one hour or so." Read more
Customers like the appearance of the engine air filter. They say it looks and sounds great, is easy to install, and has a chrome look under the hood. Some say it adds a nice deep tone to the truck and sounds like pure sexiness.
"...Throttle responds so quick. It sounds great and added a nice deep tone to the truck...." Read more
"...conditions, but when you get into the 3000 RPM range, it sounds like pure sexiness. 2013 F150 5.0L with tune." Read more
"...Very happy with the purchase and love the chrome look under the hood." Read more
"Looks good on my 2011 Ford F-150...." Read more
Customers are mixed about the fuel efficiency of the engine air filter. Some mention that it increases their fuel mileage by about 1 mpg, while others say that it reduces their fuel efficiency and power.
"...The truck seems to pull harder at higher RPM, so definite horsepower gain!! The engine roars when you tramp on it!!! I love that sound!..." Read more
"...opening on the air flow sensor is facing the air filer or the truck will not run...." Read more
"...1/4” gap all the way around.Definite increase in hp. 2mpg increase in town 8 mpg increase on Hwy...." Read more
"Does the job well. Better mileage and power." Read more
Customers are mixed about the fit of the engine air filter. Some mention that it fits perfectly, while others say that it doesn't fit perfectly, the hard plastic line doesn''t work well, and the bolt holes didn''' not line up correctly.
"...I have a 2014 f150 XLT with a 5.0 V8. Everything fit perfectly...." Read more
"Great product!! Nice fit and finish. Air box upper and lower could be a better fit...." Read more
"...The metal portion that attaches to the top of the air box does not fit as tight as other brands I have owned in the past...." Read more
"LoudReal loudGood fit..." Read more
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Install ~ Easy just take your time don't over tighten or strip screws easy peasy 25 mins
MPG ~ I am sure it may have a positive effect as my MPG went from 17.8 to 18.2, HOWEVER... with the amazing throaty sound you get stomping on the pedal gas mileage will fall fast! Go easy it will save.
Sound ~ WOW!!!!!! My 2013 F150 with the Coyote 5.0 really sounds awesome, get on the highway at 40-50mph and stomp it down and everyone in a 30 foot radius will look over and go WTF was that? LOVE IT!!!!
HP ~ Haven't noticed anything but a little faster acceleration, nothing you will notice without a dyno tune!
Price ~ Pricey, at almost $300 bucks I got the chrome pipe for looks, and for a pipe some gaskets and an air filter not sure I can say its worth the $$$.. Its your call, if you want your vehicle to sound and feel BAD ASS? Get it! if you want to save 1 mpg put $300 in your savings account instead :)
In closing, I will say I Love it, and I feel it was worth it, heres a couple pics....
Reviewed in the United States on September 2, 2015
Install ~ Easy just take your time don't over tighten or strip screws easy peasy 25 mins
MPG ~ I am sure it may have a positive effect as my MPG went from 17.8 to 18.2, HOWEVER... with the amazing throaty sound you get stomping on the pedal gas mileage will fall fast! Go easy it will save.
Sound ~ WOW!!!!!! My 2013 F150 with the Coyote 5.0 really sounds awesome, get on the highway at 40-50mph and stomp it down and everyone in a 30 foot radius will look over and go WTF was that? LOVE IT!!!!
HP ~ Haven't noticed anything but a little faster acceleration, nothing you will notice without a dyno tune!
Price ~ Pricey, at almost $300 bucks I got the chrome pipe for looks, and for a pipe some gaskets and an air filter not sure I can say its worth the $$$.. Its your call, if you want your vehicle to sound and feel BAD ASS? Get it! if you want to save 1 mpg put $300 in your savings account instead :)
In closing, I will say I Love it, and I feel it was worth it, heres a couple pics....
If you have someone who rides with you frequently who complains about you “accelerating to hard” and you don’t want to hear that, might not want to give them rides any more. You’ll want to do it more but also even at mild rpms 3-35K range it does sound like there is the option for take off, but is that a bad thing?
When you are able to keep your foot off the floor you will see an increase in your mpg mine was about a mile to 1.5 or so.
Reviewed in the United States on January 23, 2023
I had to see for myself, so after installing it and driving around I can say the same thing. It sounds great in all the right ways. It's got a great tone when you get on it and shuts right up when you let off. At slight throttle it's like stock. Give it a little more though and you get nice sounds without having to tach it up too high. I love the characteristics.
That being said, YMMV but really it's made for a specific range of trucks with one engine, so perhaps not really. Either way, I'm extremely happy and I'm pretty sure you'd be too if you're looking for the same thing. It's a lot less than exhaust work and I'm glad I went this route first.
Top reviews from other countries
Reviewed in France on August 22, 2020