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AMSOIL Ea Air Induction Filters (EaAU)
Ea Air Induction Filters (EaAU)
AMSOIL now offers universal air induction filters (EaAU)
designed to replace stock oil wetted gauze or foam conical
filters that were supplied with custom induction systems.
AMSOIL Ea Air Induction Filters offer better efficiency,
excellent airflow and are cleanable.
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.

Large and Growing Market
According to research done by the Specialty Equipment Market Association (SEMA), a new air intake
system is among the first modifications a consumer makes to his or her vehicle. Since changing the air
filter alone cannot eliminate air restriction built into the vehicle at the factory, replacing the factory air
flow assembly includes replacing the filter, air box and air path. SEMA reports sales of air intakes are
over 300,000 every year.

While intake kits were initially sold only for performance-type applications, they are now also being
marketed and used as a way to boost fuel economy in SUVs, minivans, trucks and more.

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.
AMSOIL #
K&N#
Product Style
Flange
Type
Base OD
(in)
Flange
ID (in)
Media
Height (in)
Top OD
(in)
EaAU3050
RU-3570
Round Tapered
Center
6.000
3.000
5.000
5.0
EaAU3051
RU-3580
Round Tapered
Center
6.000
3.000
5.000
4.0
EaAU3090
RE-0810
Round Tapered
Center
6.000
3.000
9.000
5.0
EaAu3555
RU-3550
Round Tapered
Center
4.625
3.500
5.500
4.0
EaAu3560
RE-0950
Round Tapered
Center
6.000
3.500
6.000
5.0
EaAu3570
Ru-3130
Round Tapered
Center
4.625
3.500
7.000
3.5
EaAu3590
RE-0920
Round Tapered
Center
6.000
3.500
9.000
5.0
EaAu4070
RC-4680
Round Tapered
Center
6.000
4.000
7.000
4.0
EaAU4075
RF-1040
Oval Tapered
Center
9.000x5.750
4.000
7.500
7.0x4.5
EaAU4090
RE-0870
Round Tapered
Center
6.000
4.000
9.000
5.00
EaAU4091
RC-5102
Oval Tapered
Off-Set
9.500x6.750
4.000
8.938
9.0x5.5
EaAU4095
RC-4780
Round Tapered
Center
6.625
4.000
9.500
5.25
EaAU4178
RC-4900
Round Tapered
Center
7.375
4.125
7.875
6.625
EaAU4510
RF-1024
Oval Tapered
Center
9.250x6.250
4.500
10.000
7.0x4.5
EaAU4560
RU-3480
Round Tapered
Center
5.875
4.500
6.000
5.0
EaAU6065
RF-1042
Round Tapered
Center
7.500
6.000
6.500
5.0
EaAU6075
RF-1041
Round Tapered
Center
7.500
6.000
7.500
5.0
EaAU6080
RF-1020
Round Tapered
Center
7.500
6.000
8.000
5.0
EaAU6081
RF-1044
Round Tapered
Center
7.500
6.000
8.000
5.0
AMSOIL EaAU filters are designed to replace air induction filters on a dimensional basis only. EaAU
filters do not provide connections for engine sensors found on some aftermarket induction system
AMSOIL EaAU filters are designed to replace air induction filters on a dimensional basis only. EaAU
filters.
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