Green Filter 7159 Green High Performance Air Filter

I have Focus ST 2017 its fit it and turbo sound is very nice , I recommend anyone have Focus ST to buy it

Fits the ford focus ST Perfectly!

Product was delivered in perfect condition. Used for my FoST 2018, significant improvement in air flow and audible flutter!

Arrived in perfect condition well packed

I drive a 2013 Ford Focus ST and it's Everything I hoped for. Had a stock filter, switched to this high performance filter and it is great. Personally, I noticed a slight increase in throttle response, and high end power. If you're looking for a power adder, this isn't the ideal product, but it does help your car breathe ALOT better. The best part about this filter is the INDUCTION NOISE AND OH MAN is it sweet. Turbo sounds come through alot clearer and louder and you get more spool noise when boost kicks in. I run this without the factory intake lid, because this filter comes with a 'O' clamp to bite onto the intake piping. With the lid, there is still noise but to maximise noise I run it without. Expectations were met and I do reccomend this filter.

This is for the fit on a Ford Focus as it fits PERFECT to the airbox yet adding that cool air effect with a open end design. You have to see if it will do the same for your Ford design air box!!! I do know, If you have a 2015 Ford Focus & simular air box ( as that design went a long want on many fords) this is a must... if you like to hear the amazing sound of that engine ( mine is a 2.0 & it works on turbo) and not go broke on a cold air intake, this is a must! It does the same thing at a third of the price of a air charger! I love it! It is very well built, I was shocked at how it is better than any other top name I have used in the past! I will be ordering more of Green Fikters to replace the air chargers on my other rides! I didn't know they could be made this well. Skip the nightmare of a whole air charging instal!!! This saves loads of money and time! I love it! ( also delete the snorkel.. find how online)

Couldn’t be more happy with this filter, it performs well I think the value for what you pay if worth it, it looks simple to clean and the way the you hear the turbo almost every time you touch that throttle I love it

Honestly, I don't write a ton of reviews but I had too for this. Easy to install, does everything as advertised. Even IMPROVED MY GAS MILEAGE! If I had a dollar for every product that said it would improve my mileage but ended up being a waste of money I would never have to buy gas again! But this one works. Even set a new trip on my Focus ST to be sure. Trip 1 : 7500 Kms - 9.2 L /100 KM Trip 2: 1200 Kms - 8.1 L / 100 KM I know you dont believe it, but neither did I....Trust me, this is worth every penny.

First I purchased the K&N air filter. The unit didn't even fit in the filter housing, so I had to return it - not sure what was going on there but I spent 30 extremely frustrating minutes trying to get the stupid thing to fit. Opening the box of the Green air filter, I immediately noticed a level of quality that far surpassed the K&N filter. The design is perfect, the rubber flange mates perfectly with the intake duct and installation was a breeze at under 2 minutes to install. Love that they include a clamp with the filter too! Engine feels smoother at higher RPM's, and looks and sounds great! Happy I sent the K&N filter back, and probably won't purchase K&N product ever again tbh. There's a big difference in the quality for sure! Go GREEN!