Part 77-1540KP Product Specifications
Product Style: 77 Series Kits
Estimated Horsepower Gain: 5.92 HP @ 4054 RPM
Replacement Filter: RF-1048
Air Filter Color: Red
Air Filter Outlet Shape: Round
Street Legal In All US States: Yes
Air Filter Height: 6 in (152 mm)
TUV Approved (Europe): No
Air Filter Material: Cotton Gauze
Clamps Included: 6
Clamp Material: Stainless Steel
Clamp Style: Regular
Couplers Included: 3
Mass Air Flow Sensor Adapter Included: Mass Air Flow Sensor Adapter Included When Required
Intake Pipe Color / Finish: Polished
Intake Pipe Ports: All intake tube ports needed for the specified applications are included
Vacuum Tubing Included: Yes
Air Filter Large End Diameter: 7.5 in (191 mm)
Weight: 11.6 lb (5.2 kg)
Product Box Length: 22.25 in (565 mm)
Product Box Width: 14.25 in (362 mm)
Product Box Height: 12.5 in (318 mm)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.
Be the first to review part 77-1540KP
Great results with the AirCharger on my 05 Jeep Liberty 3.7L 4x4
I recently purchased the K&N air charger (air intake) kit for my 2005 Jeep
Liberty 3.7L 4x4. I’m not an auto mechanic by any means, so the very
detailed installation instructions were perfect as I had the kit installed
within the 90 minute estimated install time. After the install, I took it
for a drive and instantly noticed the additional power and the transmission
seemed to be shifting much more smoothly now. A few days after that, I
pulled my ATV from NC to WV through the mountains. When pulling up the big
hills, I could really feel the difference in that the engine didn’t seem to work
as hard. If the engine downshifted, there was more power than before.
I had been tracking my gas mileage prior to the install and after the install.
Consumer Reports rated my Jeep in their “real” test as having 10 city and 22
highway. Before the install, I was getting about 15-16 on my normal drive
(no highway). Now, I am getting 17-18 mpg. That doesn’t sound like
much, but just that much difference can add up to almost 40 more miles per tank
(20 gallon tank). That’s a savings of over 2 gallons of gas per tank at
$3.00/gallon which is about $6.00 per fill up! So, not only did I gain the extra
power, I save money at the pump!
Jeff, Cary, North Carolina
I love your products! I purchase mine for my Scion FR-S, and I can say this is the best simple performance upgrade I ever made! I feel the difference in power right away. I even purchased another one for my Jeep Liberty! Great product, thank you!
Anibal Babilonia, Frankfort, illinois
2011 Jeep Liberty Renegade 3.7L, 4x4, trail rated has a real world city driving increase of about 1.6 mpg on the uphill / downhill area driven. Haven't taken it out on the freeway for a long trip yet but if the city driving is any indication, I would expect highway mpg to possibly increase by about 3+ mpg. Jeep KKs & JKs do not get good mileage because of the non-aerodynamic (flat) front end, low gearing and extra weight from under chassis skid plates so this is a pleasant surprise.
Low end acceleration has a felt increase, especially from a standing start on a 5% or more uphill grade, without sacrificing the increased mileage. Because of the increased engine performance, the transmission shifts faster into the next higher gear and holds the gear longer under load.
I would buy another K&N air filter for any vehicle I own.