K&N Performance Cold Air Intake System: Easy Installation, Engineered to Maximize Airflow, Boost Horsepower & Torque, 57-2561

I think this product is great. If anyone out there owns a Ford Ranger with 4.0 liter buy this product. This motor must be drowning for air intake. I use to get 15 mpg now getting 17mpg. I know your'e thinking oh 2mpg . Did the math, pays for itself in 8 tanks, for me that's 2 months. Then I get the extra 8 dollars every tank. 400 bucks annually, its sick how much gas cost. Don't know how much hp I gained but had to be some and I dont ever have to buy another filter, thank you K  N . Some customer said his friend bought one for his Ranger after we got done Bitchn about gas and my mpg, thought why not, I've tried everything else. Pass it on Ranger fans.

Easy installation, noticeable improvement in throttle response. Increased mileage on first trip since install.

It fit, others that I have tryed did not. Thanks for a great product

5 Star Review

Looks good and installed pretty easily on my 2011 ranger. The main disapointment is that it is loud (you can hear a whirl). At a cold start it's louder than the motor and is audible from inside the cab. When the A/C kicks on it makes another noise (best way to discribe it is like an air gulp). After warming up most of the noise goes away. I have noticed a bit more horsepower but not enough to merit buying it.

Easy installation with high quality hardware. Throttle response and noise improved. However. Live readings show 110-140 intake temp. Factory box was 90-120. If you live in a hot state, be cautious.

The intake tube still had flashing from the original casting around the seam and none of the threaded inserts were actually straight. Make installing difficult. Kinda just expected more from K&N.