MILWAUKEE SYNTHETICS LLC
Amsoil has an air filter for your existing air induction system.
If you have a diesel, or one of several gasoline engines, INJEN/AMSOIL has a complete kit for you. Increase your HP by up to 15% and increase MPG.
More Cold Air = More Horsepower
The basic purpose of the air intake system is to bring cool air from outside the engine compartment into the engine. The cooler air is denser than the air found within the hot engine compartment. The denser charge contains more oxygen than warmer air, providing better combustion through a more effective air/fuel mixture.
Another advantage of most specialty-equipment cold air intakes is their consistent diameters and the absence of sharp bends, both of which help to eliminate turbulence in the air stream.
If you are looking on a complete air intake kit for your diesel, please click on the INJEN/AMSOIL logo below for more information. If you are looking for just a filter for your current after market air induction system, click on the Amsoil filter photo.

Injen, a leader in air induction systems, has teamed up with Amsoil to make air induction systems. Amsoil filters used with the Injen air induction systems are the same synthetic material that have made the Amsoil air filters famous. More cold air induction systems for gasoline engines will be out soon!
Click on the INJEN logo above for more information or the pictures below for installation photos.
INJEN AIR INDUCTION FILTER KITS FOR YOUR DIESELS
2003 - 2007 FORD POWERSTROKE F250, F350, F450
2005 - 2007 CHEVY / GMC 6.6L DURAMAX
2003- 2007 DODGE RAM 2500, 3500 5.9L CUMMINGS
INJEN AIR INTAKE - SEVERAL MODELS AVAILABLE FOR YOUR GASOLINE ENGINES
![]() |
PF7021P |
![]() |
PF7022P |
![]() |
PF5060P |
![]() |
PF8050P |
![]() |
PF9020P |
![]() |
PF9025P |
![]() |
PF9021P |
![]() |
PF9024P |
![]() |
PF9026P |
![]() |
PF1950-1P |
![]() |
PF2019P |
![]() |
PF5001P |
![]() |
PF5002P |
Intake System Design
Cold air intake systems serve several important functions. Primarily, they are used to increase the amount of oxygen available to the engine, increasing power. Because cool air has greater density than hot air, aftermarket intakes improve combustion of fuel by capturing cooler air from outside the engine compartment. In addition, an aftermarket air intake system increases the diameter of the intake as compared to the original equipment, increasing air flow into the engine and making more oxygen available during the combustion process.
By designing a more direct route for the air entering the engine, as well as a smoother interior surface for the intake, air resistance is reduced and air flow is increased. To protect the engine from damaging dirt, cold air intakes are also equipped with filters. Air intake systems can improve gas mileage and increase performance, and they also add a sleek, custom look to a vehicle.
Construction of Injen/AMSOIL Diesel Air Intake Systems
AMSOIL now offers the Injen/AMSOIL Power-Flow Diesel Air Intake series with revolutionary Variable Induction Technology. The new VI Technology process is a multipower air induction system that fills the plenum with air, giving added power on demand. The Power Box on the Diesel series is manufactured using a composite mix of glass-filled nylon and polypropylene designed for noticeably quiet operation. The Power Box was designed for advanced cooling efficiency and the ability to resist high temperatures. It will not distort, unlike other plastic components that lose their structural integrity over time. This ground-breaking material makes it possible for the integration of a built-in velocity stack that streamlines the air turbulence into the plenum air chamber by way of the multi-power induction system. Injen/AMSOIL Diesel Air Intake Systems are manufactured with aerospace alloy T6 aluminum, stainless steel clamps and tig-welded ports and brackets. They are dyno-tuned for peak performance and have a direct bolt in application, making installation quick and easy.
*Up to 44.32 ft. lbs. Difference in Torque at 2,710 RPM’s with Injen/AMSOIL Diesel Air Intake
*Up to 22.95 Difference in Horsepower at 2,710 RPM’s with Injen/AMSOIL Diesel Air Intake

*Up to 39.62 ft. lbs. Difference in Torque at 3,301 RPM’s with Injen/AMSOIL Diesel Air Intake
*Up to 24.91 Difference in Horsepower at 3,301 RPM’s with Inejn/AMSOIL Diesel Air Intake
*Up to 42.89 ft. lbs. Difference in Torque at 2,482 RPM’s with Injen/AMSOIL Diesel Air Intake
*Up to 20.26 Difference in Horsepower at 2,482 RPM’s with Injen/AMSOIL Diesel Air Intake
*These results are representative of the vehicles tested in support of the development of the Injen/AMSOIL Cold Air Intakes. Performance may vary from vehicle to vehicle due to equipment and driving conditions.
EAAU FILTERS FOR YOUR CURRENT AFTER MARKET AIR INDUCTION
AMSOIL EaAU
AMSOIL Ea Air Induction Filters fit most of the popular intake systems available. They provide improved cold air intake and a level of engine protection only an Ea Filter can provide. AMSOIL is currently offering nine Ea Air Induction Filters with varying lengths and widths. These filters have flange IDs of 3", 3.5", 4", 4.125”, 4.5” and 6". Since these filters offer a universal fit, AMSOIL provides the dimension sheet below that customers can use to determine the proper filter for their applications.
Cleanable
AMSOIL Ea Air Induction Filters are cleanable and long lasting. AMSOIL recommends cleaning the Ea Air Induction Filter when designated by the restriction gauge if the vehicle is so equipped, or according to operating conditions. If it is used in extremely dusty environments or in a performance vehicle, more frequent cleanings may be required.
Unique Design
To increase filter surface area and the volume of air entering the engine, the top of many popular Ea Air Induction Filters (EaAU) is cut away. The media is inserted in a conical form pointing toward the direction of airflow.
Quality Construction
AMSOIL Ea Air Induction Filters are made from the same high-quality nanofiber media found in other AMSOIL Ea Air Filters. The nanofiber media is pleated with epoxy-coated wire on the face and back of the media for additional strength and stiffness. High quality, pliable urethane connectors with plastisol potting complete the product. Each Ea Air Induction Filter comes with a clamp for convenient installation.
|