AEM 21-814C User manual

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Equipped with AEM® Dryflow™ Filter
No Oil Required!
INSTALLATION INSTRUCTIONS
PART NUMBER
21-814C (GUN METAL GRAY FINISH)
2017-18 TOYOTA COROLLA 1.8L

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ITEM NO. PART NUMBER DESCRIPTION QTY.
1 21-2127DK AIR FILTER; 2-3/4" X 5" OVAL DRYFLOW 1
2 2-1597C Tube; 2.50” X 32” L, 2017 Toyota Corolla 1
3 084018 Hose; 2.50”ID x 2.50” L Hump Reinforced 1
4 8-197-1 Extension Harness; 5 Pin 18” Denso 1
5 9440 Hose Clamp; 2.15”-3.00” 2
6 9448 Hose Clamp; 2.56”-3.50” 1
7 07733 Bolt; M4x.07 8mm, A/H Cap , SS 2
8 1228599 Mount, Rubber 1” x 6mm 1
9 444.460.04 Nut; M6 Hex Serrated 1
10 08160 Washer; 1”D x .25” Hole Fender 1
11 1-127 Zip Tie; 8” Tree Push Mount 1

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Read and understand these instructions BEFORE attempting to install this product. Failure to follow installation
instructions and not using the provided hardware may damage the intake tube, throttle body and engine. If you
need any assistance please call1-800-858-3333 to speak with a representative in our Customer Service Center
before returning the product.
1. Preparing Vehicle
a. Make sure vehicle is parked on level surface.
b. Set the parking brake.
c. If engine has run in the past two hours, let it cool down.
d. Disconnect negative battery terminal.
e. Do not discard stock components after removal of the factory system.
f. Open the air intake kit package and make sure all parts are included.
2. Removal of stock system
a. Pull up on engine cover to remove from rubber
grommets.
b. Disconnect both baery terminals, remove bolt that
holds baery strap, then remove baery from vehicle.
c. Unplug the Mass Air Flow sensor electrical
connector.
d. Remove the 4 bolts that hold the battery tray, the
bolt for the ground cable to chassis, and the one bolt
for the air box scoop. BOLTS WILL BE REUSED IN
STEP 3d.
Tools Needed:
Screwdriver
8, 10mm Socket
Socket Driver
Pliers
4mm Hex Key
Floor Jack
Jack Stands

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e. Loosen the clamp to the throttle body, unlatch
the clips that hold the air box lid, and disconnect the
PCV hose. Then remove the upper intake assembly.
f. Unlatch the wiring harness from the air box, then
remove the 3 bolts that hold the lower air box
housing.
g. Maneuver the battery tray until there is clearance
to remove the air scoop.
h. Remove the MAF sensor from the air box using a
screwdriver. The MAF sensor will be reinstalled in
step 3b. Note: handle the MAF sensor with care.

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3. Installation of AEM® intake system.
a. When installing the intake system, do not completely tighten the hose clamps or mounting hardware until
instructed to do so.
a. Install the coupler on the throttle body with the
included hose clamps. Tighten the hose clamp on
the throttle body side at this time.
d. Secure the battery tray and ground cable with
the bolts removed from step 2d . Then move the
battery onto the tray.
b. Install the MAF sensor onto the AEM intake tube
with the supplied M4 fasteners.
c. Tighten the rubber mount to the air box mounting
hole, then install the AEM intake tube. DO NOT
TIGHTEN THE NUT UNTIL INSTRUCTED TO DO
SO IN THE LATER STEP.

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e. Secure the battery by tightening the bolt on the
core support, then tighten the nut on the battery
strap.
f. Lift the vehicle up with a floor jack and secure it
with jack stands. Remove the 2 bolts and the push
clip on the fender liner as shown. Then pull back
fender liner for access.
h. Install the air filter onto the tube. Be sure to have
clearance around the filter before tightening the
clamp.
i. Connect the MAF harness extension to the MAF
sensor. Then, reinstall the 2 bolts and push clip to
secure the fender liner pulled back in step 3f.
g. Connect the MAF sensor wire harness extension
and route it down to the lower bumper area. Then
secure the wiring harness with the supplied push-in
zip tie.
j. When proper tube alignment and clearance is
achieved, tighten the m6 nut on the rubber mount
and the hose clamp on the throttle body and reinstall
engine cover.

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4. Reassemble Vehicle
a. Position all kit components for best fitment. Ensure that no components contact any unintended part of the vehicle.
b. Check for proper hood clearance. Re-adjust components if necessary and re-tighten them.
c. Inspect the engine bay for any loose tools and ensured that all fasteners that were moved or removed are properly
tightened.
d. Reconnect negative battery terminal and start engine. Let the vehicle idle for 3 minutes. Perform a final inspection
before driving the vehicle.
5. Service and Maintenance
a. AEM Induction Systems require cleaning the intake system’s air filter element every 100,000 miles. When
used in dusty or off-road environments, our filters will require cleaning more often. We recommend that you
visually inspect your filter once every 25,000 miles to determine if the screen is still visible. When the screen
is no longer visible some place on the filter element, it is time to clean it. To clean, purchase our Synthetic air
filter cleaner, part number 1-1000 and follow the easy instructions.
b. Use window cleaner to clean your powder coated AEM® intake tube.
NOTE: DO NOT USE aluminum polish on powder coated AEM® intake tubes.
For technical inquiries
e-mail us at
[email protected]
or
call us at
800.992.3000
STOCK INTAKE INSTALLED AEM INTAKE INSTALLED

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AEM Air Intake System Warranty Policy
AEM® warrants that its intake systems will last for the life of your vehicle. AEM® will not honor this warranty due to me-
chanical damage (i.e. improper installation or fitment), damage from misuse, accidents or flying debris. AEM® will not
warrant its powder coating if the finish has been cleaned with a hydrocarbon-based solvent. The powder coating should
only be cleaned with a mild soap and water solution. Proof of purchase of both the vehicle and AEM® intake system is
required for redemption of a warranty claim.
This warranty is limited to the repair or replacement of the AEM® part. In no event shall this warranty exceed the original
purchase price of the AEM® part nor shall AEM® be responsible for special, incidental or consequential damages or cost
incurred due to the failure of this product. Warranty claims to AEM® must be transportation prepaid and accompanied
with dated proof of purchase. This warranty applies only to the original purchaser of product and is nontransferable. Im-
proper use or installation, use for racing, accident, abuse, unauthorized repairs or alterations voids this warranty. AEM®
disclaims any liability for consequential damages due to breach of any written or implied warranty on all products manu-
factured by AEM®. Warranty returns will only be accepted by AEM® when accompanied by a valid Return Merchandise
Authorization (RMA) number. Credit for defective products will be issued pending inspection. Product must be received
by AEM® within 30 days of the date RMA is issued.
If you have a warranty issue, please call [phone] and our customer service department will assist you. A
proof of purchase is required for all AEM® warranty claims.
10-107A 3/8/18