K N 57-1576 Jeep 2018-20 Wrangler JL Instruction Manual
- June 3, 2024
- K N
Table of Contents
INSTALLATION INSTRUCTIONS
57-1576 JEEP
2018-20 Wrangler JL 2020 Gladiator V6-3.6L
NOTE: This kit was not designed to fit vehicles with a body lift.
INTAKE SYSTEMS FOR VEHICLES LISTED ARE 50 STATE LEGAL. SEE KNFILTERS.COM FOR CARB STATUS ON EACH PART FOR A SPECIFIC VEHICLE.
57-1576 Jeep 2018-20 Wrangler JL
TOOLS NEEDED: flat blade screwdriver ratchet extension 10mm socket 4mm fallen t20 & t30 torx
PARTS LIST:
| Description| Qty.| Part #
---|---|---|---
A| HOSE CLAMP #52| 2| 08610KA
B| HOSE; HUMP 3.25″ID X 2-5/8″L| 1| 8171
C| INTAKE TUBE; (MS)| 1| 87384
D| GROMMET; 1″OD,1/2″ID,1/2″| 1| 8064
E| VENT; 1/4 NPT| 1| 82628
F| BOLT; M6 X 1 X 16MM| 3| 7730
G| WASHER; 1/4″ID X 5/8″OD| 5| 8275
H| HOSE CLAMP; #88| 1| KITHS88
I| FILTER CHARGER| 1| RU-2815
J| AIRBOX; (MT)| 1| 087385-1
K| BOLT; M6-1 X 16MM| 2| 7812
L| WASHER, M6 SPLIT LOCK ZINC| 2| 1-3025
M| MOUNT, PLASTIC AIRBOX| 2| 8-186-1
If you need any assistance please call
1-800-858-3333 to speak with a
representative in our Customer Service Center before returning the product.
NOTE: FAILURE TO FOLLOW INSTALLATION INSTRUCTIONS AND NOT USING THE
PROVIDED HARDWARE MAY DAMAGE THE INTAKE TUBE, THROTTLE BODY AND ENGINE.
TO START:
-
Turn off the ignition and disconnect the negative battery cable.
NOTE: Disconnecting the negative battery cable erases pre-programmed electronic memories. Write down all memory settings before disconnecting the negative battery cable. Some radios will require an anti-theft code to be entered after the battery is reconnected. The anti-theft code is typically supplied with your owner’s manual. In the event your vehicles anti-theft code cannot be recovered, contact an authorized dealership to obtain your vehicles anti-theft code. -
Disconnect the inlet air temp electrical connector
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Disconnect the crank case vent line.
-
Remove the bolts that secure the factory tube to the fan shroud, then loosen hose clamp at throttle body.
-
Remove the bolt that secures the factory air box to the fender and remove assembly from the vehicle.
NOTE: K &N Engineering, Inc., recommends that customers do not discard factory air intake.
-
Remove the 6 clips at the top of the grill that secure grill to core support.
6a.Before removing grill note the location of the 8 clips that hold the lower part of the grill to the core support. Start at either side of the grill. Grasp the bottom part of the grill pulling firmly straight back dislodging the clips one at a time. Work your way across the grill until all clips have been dislodged and remove the grill. -
Remove the two bolts that secure the core support brace to the core support and remove brace.
NOTE: the brace will be reinstalled in a later step.
-
Remove the two bolts that secure the inlet scoop to the core support and remove inlet scoop.
-
Reinstall core support brace onto the core support.
-
Reinstall the grill reengaging the lower clips one at a time then reinstall the six clips that hold the grill to the top of the core support.
-
Install two airbox mounts onto the K&N ® airbox with provided hardware.
-
Install ¼ NPT quick connect fitting onto the tube.
NOTE: Plastic NPT fittings are easy to cross thread. Install the vent fitting “hand” tight, then turn it two complete turns with a wrench. -
Remove the inlet air temp sensor from the factory inlet tube. Then remove the “O” ring from the sensor. Install the provided grommet onto the K&N ® intake tube. Then install the inlet air temp sensor into the grommet.
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Install the K&N ® air filter onto the K&N ® intake tube.
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Install the K&N ® intake tube assembly onto the K&N ® airbox with provided hardware. Note the orientation of the K&N ® intake tube.
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Install provided hose onto the throttle body (08171) secure with provided clamp.
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Install the K&N® intake assembly into the hose at throttle body first, then engage the K&N ® airbox mounts into the factory airbox mounting location. Secure K&N ® intake assembly with provided clamp.
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Reconnect the crank case vent line onto the quick connect fitting and reconnect the inlet temp sensor electrical connector onto the temp sensor.
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Reconnect the vehicle’s negative battery cable. Double-check to make sure everything is tight and properly positioned before starting the vehicle.
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The C.A.R.B. exemption sticker, (attached), must be visible under the hood so that an emissions inspector can see it when the vehicle is required to be tested for emissions. California requires testing every two years, other states may vary.
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It will be necessary for all K&N ® high flow intake systems to be checked periodically for realignment, clearance, and tightening of all connections. Failure to follow the above instructions or proper maintenance may void warranty.
ROAD TESTING:
- Start the engine with the transmission in neutral or park, and the parking brake engaged. Listen for air leaks or odd noises. For air leaks secure hoses and connections. For odd noises, find cause and repair before proceeding. This kit will function identically to the factory system except for being louder and much more responsive.
- Test drive the vehicle. Listen for odd noises or rattles and fix as necessary.
- If road test is fine, you can now enjoy the added power and performance from your kit.
- K&N Engineering, Inc., requires 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 and re-oil, purchase our filter Recharger ® service kit, part number 99-5050 or 99-5000, and follow the easy instructions.
INTAKE SYSTEMS FOR VEHICLES LISTED ARE 50 STATE LEGAL. SEE KNFILTERS.COM FOR CARB STATUS ON EACH PART FOR A SPECIFIC VEHICLE.
• 1455 CITRUS ST., P.O. BOX 1329, RIVERSIDE, CA., U.S.A. 92502 • TECH SERVICE
800-858-3333 • FAX
951-826-4001
• e-mail: [email protected]® • WWW:
http://www.knfilters.com®