K&N High-Flow Original Lifetime Engine Air Filter: Increase Power: Premium, Washable: Compatible with 2007-2020 Infiniti/Nissan: G35, G37, Q40, Q60, QX50, 350Z, 370Z, Fairlady, Skyline, 33-2399

I have had K&N in every car that I have owned. The best air cleaner out there. I have always liked how you can clean them let dry,re-oil and install back into the car. the cleaning kit is not too bad on price and you can find it at any auto store. Hold any air cleaner up to a light and look through it next to a K&N and you will see the difference! Its plan as day. Very easy to install on my new to me 2010 Infiniti g37 sedan. I had them both installed with warning stickers in less then 5 min. Worth the up front cost because i will never have to buy another air filter for this car again. My last daily driver has 250,000 miles on it. That car I,m passing down to my son. It still has the K&N air filter on it that I installed when it was new.That K&N air filter looks like new after I cleaned it,re-oiled and installed. I'm 42 now and will have this product in every car that I every own until I'm gone.

Great and awesome! Very tight fit so just be careful installing!The packaging and website tells you, you can wash these and rinse the filters for reusability! Worth the price for my Z to breathe!

I put these in a 2009 G37x which requires two filters so be sure you're buying two if needed.Anyways at certain lower RPMs the car felt a little sluggish so I decided to check out the filters & they were cheap restrictive looking filters so I bought K&N put them in & went for a drive and I could feel the difference in acceleration and "get up" in the lower RPM range the throttle response improved I was actually surprised. They look much better quality & I could see how the air flow will improve just by comparing this filter to the one I got with the car.I would recommend, it's worth the money in the long run. Eventually I'll get a cold air intake but meanwhile this will do lol

Not much to say about this product, it works as well as the stock filter and it's reusable so it saves you a bit of cash. The only issue with these seems to be that if you oil them too heavily after cleaning they can mess up your airflow sensors so it does take a bit of extra work over a simple replaceable filter but if that's not a problem for you this is a great product.

K&N is a quality product. But definitely a tight fit for the G37! Push on the latches to get it to hook onto the airbox.

I've had K&N filters on virtually all of my cars & motorcycles for many years & am more than satisfied. Gas mileage & power seem improved, but money saved is equally important.

I installed two of these K&N engine air filter in my 2018 Nissan 370Z. The car is so fast normally that I really can’t tell if it’s any faster with the K&N filters. However, I’ve been using K&N filters in my other vehicles (cars and motorcycles) for years without any problems and have experienced noticeably improved acceleration in some of those vehicles. The filters may be pricey but they are worth it. Once you buy one you never have to replace it - just clean and service the filter using the K&N filter service kit every 50,000 miles.

Used in my 2013 Infiniti G37x. Easy to install, and saw instant gain in MPG. Seems to add a little HP as well, but minor. Great product!