K&N Engine Air Filter: Reusable, Clean Every 75,000 Miles, Washable Replacement Car Air Filter: Compatible 1981-2019 Nissan/Infiniti/Renault (Maxima, Murano, Pathfinder, Altima, Elgrand) 33-2031-2

I always fit a K&N to my vehicles as you never have to buy another air filter and they improve the airflow through the engine a tad.

Excellent product I've always change my car filters to K&N filter. Wouldn't buy it if your looking for an increase in fuel performance and fuel economy. However as a one time replacement product that only needs a cleaning kit, you can't go wrong.

Definitely throttle response is much better. Does it improve horse power? I think so, but since Infiniti FX35 is a lot powerful I cannot judge for sure. Anyway, very pleasant plug&play.

Great Quality!!!

Easy to fit. Looks and feels good quality and suitable for some heavy duty use. I like to think I noticed some improvement in performance but it's rather like 'super' petrol in that it may be psychological. Logically though, the design of this means that there will be improved airflow and so I'm prepared to give it the benefit of the doubt. It certainly can't do any harm.I'm not particularly looking forward to buying the cleaning kit.... and cleaning it, but that goes with the territory.Just be sure to let your mechanic know when they service your car that this is not to be thrown away - although a good mechanic should probably spot it anyway.

Does exactly what it says on the tin