1. Air Intakes
  2. Airaid
  3. Sealed Box
  4. 10 Additional Horsepower
  5. Dry Filter
  6. Tube Included
Airaid MXP Cold Air Intake System with SynthaMax Dry Filter - Stage 2 - Closed

Airaid MXP Cold Air Intake System with SynthaMax Dry Filter - Stage 2 - Closed

Item # AR401-278
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Rotomolded air box completely isolates dry performance air filter from engine heat, lowering air temps to improve horsepower and torque for your vehicle. Quieter than open systems. Polyethylene intake tube. Call 800-298-8924 to order Airaid air intakes part number AR401-278 or order online at etrailer.com. Free expert support on all Airaid products. Guaranteed Lowest Price and Fastest Shipping for Airaid MXP Cold Air Intake System with SynthaMax Dry Filter - Stage 2 - Closed. Air Intakes reviews from real customers.
  • All Info
  • Reviews (6)
  • Q & A (1)
  • Videos (1)
  • Photos
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Airaid Air Intakes - AR401-278

  • Airaid
  • Sealed Box
  • 10 Additional Horsepower
  • Dry Filter
  • Tube Included
  • Intake System
  • SynthaMax Filter

Rotomolded air box completely isolates dry performance air filter from engine heat, lowering air temps to improve horsepower and torque for your vehicle. Quieter than open systems. Polyethylene intake tube.


Features:

  • Stage 2, closed cold air intake (CAI) improves airflow into your engine, boosting horsepower and torque
    • Closed system creates less noise than an open system
  • Air box blocks out heat from the engine to maximize cold air draw
    • Seals to hood with built-in rubber gasket to create a closed air box
  • Intake tube increases air volume and velocity
    • No pleats or breaks in the tube means decreased turbulence
  • Rotomolded, cross-linked, high-density polyethylene box and tube resist heat better than steel or aluminum components
  • Easy-to-clean, dry air filter provides excellent engine protection while still allowing for improved airflow
    • 2 Layers of 100-percent synthetic material sandwiched between stainless steel mesh
    • 99.6-Percent filtration efficiency rate
    • Washable and reusable for easy maintenance - no need to oil
    • Durable urethane frame
  • Sensor pad(s) on intake tube provide relocation points for factory sensors (where applicable)
  • Easy installation
    • Uses factory mounting points
    • Includes stainless steel clamps with silicone and urethane couplers
  • Custom fit for your vehicle
  • Made in the USA


Specs:

  • Horsepower gain: up to 10 hp
  • Torque gain: up to 66 ft-lb
  • Lifetime warranty


Cold air is denser than hot air, and denser air provides more oxygen for more complete fuel combustion. More oxygen = more combustion = more power and better efficiency for your engine. The Airaid MXP intake system applies this simple formula to ramp up your engine's horsepower and torque for awesome performance gains.


MXP Cold Air Intake System

Airaid Intake Installed

The MXP intake is Airaid's top-of-the-line system. The air box and the intake tube serve as aggressive, serious upgrades over your stock intake. The rotomolded, cross-linked, high-density polyethylene construction of each component is durable and helps keep air cooler because it is more heat resistant than aluminum or steel. The box is also designed to better route incoming air than your factory air box to more efficiently direct air through the filter.


The upper edge of the air box is lined with a rubber gasket. The air box surrounds the air filter, and the gasket creates a seal with the hood of your vehicle. This isolates the air filter from engine heat on all sides, thus helping to ensure that the air that is pulled into the engine is cold and dense.


The intake tube also generates more airflow to the engine. The tube's smooth, wide-open design delivers high-volume, high-velocity air into the throttle body. Not only does the tube allow air to flow along an unrestricted path, but it is also free of noise baffles that would hinder airflow.


SynthaMax Dry Air Filter

Airaid SynthaMax Air Filter Layers

This Airaid intake kit includes a SynthaMax air filter that offers improved airflow and has a 99.6-percent filtration rate for superior protection. The large, 360-degree conical filter is composed of 2 layers of synthetic material that filter out contaminants while allowing clean air through. The synthetic material is sandwiched between 2 layers of stainless steel mesh that provide rigid durability.


This Airaid SynthaMax filter is washable and reusable. The dry filter does not need to be oiled, which makes for easy maintenance. It is recommended that you clean your SynthaMax filter every 30,000 to 50,000 miles with the Airaid cleaning kit (sold separately).



401-278 Air Aid MXP Cold Air Intake Kit with Syntha Max Dry High Flow Air Filter



AR401-278 Installation InstructionsInstallation Details AR401-278 Installation instructions

This Product Fits The Following Vehicles

2011 - 2014 Ford F-250 and F-350 Super Duty 6.7L V8 Diesel Engine - Turbocharged

2015 - 2016 Ford F-250 Super Duty 6.7L V8 Diesel Engine - Turbocharged

2015 - 2016 Ford F-350 Cab and Chassis 6.7L V8 Diesel Engine - Turbocharged

2015 - 2016 Ford F-350 Super Duty 6.7L V8 Diesel Engine - Turbocharged

2011 - 2014 Ford F-350, 450, and 550 Cab and Chassis 6.7L V8 Diesel Engine - Turbocharged

2015 - 2016 Ford F-450 Cab and Chassis 6.7L V8 Diesel Engine - Turbocharged

2011 - 2016 Ford F-450 Super Duty 6.7L V8 Diesel Engine - Turbocharged

2015 - 2016 Ford F-550 Cab and Chassis 6.7L V8 Diesel Engine - Turbocharged



California residents: click here


Video of Airaid MXP Cold Air Intake System with SynthaMax Dry Filter - Stage 2 - Closed

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Airaid Air Intakes - Intake System - AR401-278 Review

Today, we're going to review part number AR 401-278, the Airaid MXP Intake System with the SynthaMaxfilter. This part number is designed to fit the 2011 and newer Ford F-250, F-350, F-450 and the F-550 that use the 6.7 liter power-stroke diesel engine. Iwould recommend to go to the product pagefor this part number, and at the bottom of the page it will list the years and models of the vehicles this will fit on.This is a cold air intake system, which will increase your engine horsepower and torqueby collecting cold air and improving the air flow. This has the stage two sealedbox cold air intake with the air dam that will block the hot air and thenthe large inlets will maximize the cold air draw.This does increase the airflow and draw in more air than a fully closed system. Now this air box and this intake tube right here are both made of a roto-molded cross-link high-density polyethylenematerial and both of these pieces will replace the factory air box and intake tube that's on your vehicle right now. The cold air dam will isolate the engine heat while maximizing air intake.

At the very top here, it comes with this rubber seal that you would install on there and then this part would seal up against the hood on your vehicle and that will block out a lot of the hot air. Now this system does causeless noise than an open system andbecause both of these parts are made of a polyethylene material, it will help resist engine heat better than your steeland aluminum parts. It has the built in velocity stack right here and the huge inlets, which willfurtherpromote the air flow and if you will notice right down here there is a location where you can actually bolt on a factory sensor to still give you the factory readings that you are used to seeing in your vehicle. This is a very easy installation. It does come with all the hardware shown here, the mounting hardware, the instruction manual. It comes withthe split wire looms to put around the wiring harness. It comes with the seal that I mentioned earlier.

It comes with these two stainless steel clamps that will help connect this intake tube to the airbox and it comes with thissilicone or urethanecoupler.It also has these two pieces, which are aluminum. This is a hose bracket and this is a heat shield that would bolt around your intake tube and basically right now they look white. They're actually aluminum, but the white is just a seal that you would peel off and that keeps protecting the finish on it so it looks nice. It's an easy installation. It will use the factory mounting points on your vehicle. It is custom fit for your vehicle.

The parts are made in the USA. Now one other part it does come with is this Synthamax air filter. Let me just show this to you. I'll get it out of the box. I'll show you the size of it.

It'sverylarge. It's a drytwo layer air filter, which will deliver more than 99% filtration. It gives you superior air flow, excellent filtration and easy maintenance. As you can see it is avery large 360 degree conical-shaped filter and it is composed of two layers of100% synthetic materialbetween two layers of a stainless steel mesh and this will help filter out any contaminates while allowing the clean air to flow through. Now the two layers of the stainless steel mesh, theydo provide the rigid durability of the filter. This does provide excellent protection, superior air flow. It is washable and reusablefor easy maintenance and it isall held together with this durable urethane frame of the filter. Now this part number does include all of these parts showing here and just to show you briefly after you have this all put together, your air filter would basically just bolt up right in here, inside this air box just like that, very simple installation.This will include all of these parts and that should do it for the review on part number AR 401-278, the Airaid MXP Intake System with the SynthaMaxfilter. .


Customer Reviews

Airaid MXP Cold Air Intake System with SynthaMax Dry Filter - Stage 2 - Closed - AR401-278

Average Customer Rating:  4.8 out of 5 stars   (6 Customer Reviews)

Rotomolded air box completely isolates dry performance air filter from engine heat, lowering air temps to improve horsepower and torque for your vehicle. Quieter than open systems. Polyethylene intake tube.

- AR201-285
by:

Review from a similar Airaid MXP in Air Intakes


Pick this air raid intake package for my GMC. So far so good. Like the sound of the engine the step up horsepower and torque. 634600



- AR511-302
by:

Review from a similar Airaid MXP in Air Intakes


My 4Runner is a big vehicle and it takes a bit to get going, so anything that adds a bit of power and torque is welcomed. When I installed this intake it did seem to add just a bit more get up and go to my acceleration. The thing I liked best about the intake is that when accelerating it sounds better, a bit deeper sound than before. When idling or normal driving there was not a noticeable difference in sound. My gas mileage after 1,000 miles of use was just a bit improved. There was not enough improvement that I would conclusively say it improves mileage but it probably will not hurt your MPG. 102573



- AR200-280
by:

Review from a similar Airaid MXP in Air Intakes


Glad I went to etrailer! Intake works great and got it at a great price. 705028



- AR202-267
by:

Review from a similar Airaid MXP in Air Intakes


Looking good after a year, Escalade sounds better, really couldn’t tell a difference in power or mileage , but hey........sounds great 671660



- AR303-254
by:

Review from a similar Airaid MXP in Air Intakes


Noticeable power increase and 1-3 MPG i ncrease. 584961



- AR883-282
by:

Review from a similar Airaid MXP in Air Intakes


works good ,can feel power differance. 529495


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Ask the Experts about this Airaid Air Intakes

  • Would the Airaid MXP Cold Air Intake # AR401-278 Cause a Check Engine Light for 2012 Ford F350
    If the Airaid MXP Cold Air Intake System # AR401-278 were to cause a check engine light to turn on it would have to be installed improperly and it would happen immediately, not 1,200 miles down the road. Without knowing what code your truck popped it would be hard for me to speculate what the real problem is, but as long as you installed the # AR401-278 properly and plugged in all of the sensors it should not cause a vehicle to throw any codes. I would suspect the problem is elsewhere...
    view full answer...



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Info for this part was:

Written by:
David L
Updated by:
Brian B
Updated by:
Alex H

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