Not sure which 1997 Infiniti QX4 Air Filters - Custom Fit is right for you? We have over 14143 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"I've been a fan of K&N oiled filters for years to give that little extra boost to throttle response and mpg's. However, I disliked having to clean and re-oil the media as it almost always ended up too wet after I applied the oil. This aFe filter has been a revelation! It fit perfectly in my QX4's air box and gave the confidence-inspiring off the line improvement I was looking for, while the maintenance will be far easier as it performs it's duties. Haven't done a comparison on the gas savings yet, but with the familiar performance to my previous high quality filters I expect a 1-2 mpg improvement on the highway. That's saying a lot when my Infinity only gets 19 or so now!" —Mark H from Exeter, NH bought an aFe Pro-Dry S Air Filters for a 1997 Infiniti QX4.