AEM 21-203DK Universal DryFlow Clamp-On Air Filter: Round Tapered; 3 in (76 mm) Flange ID; 5.125 in (130 mm) Height; 6 in (152 mm) Base; 5.125 in (130 mm) Top, Red

I ordered this to replace the oiled filter on my Nismo CAI (actually we all know the truth now: it's a re-branded AEM!) for my 2004 G35 Coupe. The AEM site does indeed have a list of all their filters, but it's a HUGE list with some subtle differences and their support wasn't very responsive when I asked to confirm the right part number for this specific application. If you want to be sure like I did: It's a perfect fit! I was excited to move to the dry-flow since it's easier to clean, comes standard on the newer G37 intakes, was co-developed with K&N (should still flow well), and the oiled filters can cause problems with our MAFs if excess oil gets pulled up through the intake. It's a little tricky to install yourself (the main reason I wanted to be extra sure it would fit before ordering), but there are a lot of G35 forum posts showing how to do it by removing your driver side fender liner...allocate an hour to remove one wheel (the extra space is worth it), pull a few clips and metric #10 bolts and you'll be glad you did -- the car sounds better and accelerates noticeably smoother. Also, in case it helps anyone... I had the CAI installed around 2009 and replaced the filter in 2012. A number of years, but I don't drive much at all... some reported replacing it after 50k+ miles. In three years I only put ~20-30k on the car (work, grocery store, occasional road trip -- I really try to save the engine). Still, the oiled filter I replaced was (in my opinion) FILTHY! I'm hoping the dry-flow filter will "shake itself off" from bumps and other road vibration more than the oiled (like I read), but still think minimally cleaning the filter every 15-30k is a good goal for those obsessed with performance. Then again, I'm pretty OCD. :-) Go for it... You won't be sorry!

I had installed an AEM cold air intake on my 2008 Nissan Altima 3.5 SL several years ago. That was also a Dryflow filter (though it was gray). Because you need to wait for it to dry completely before using again after a cleaning (for good reason, of course), it made the cleaning process a little inconvenient. So I wanted to pick up another filter to use while cleaning the other. I was a little skeptical because the AEM Dryflow filter that came with the intake was gray and this appeared to be red (wasn't sure if it'd be a form-fit replacement). The pipe was 3", however, so I decided to give it a shot. I'm happy to say this was indeed a perfect replacement for my current intake. Installation was of course a breeze, and throttle response is noticeable. I'll definitely be using this as the primary filter and my old one as a "backup" when cleaning this one. Highly recommended--can't go wrong here.

Fits my wrx. I was using the Big sf intake, so if u want an alternative without having to retune again, this does the trick since it fits the perfect 1inch mark you need for these cars. Just make sure no debris is inside it, i had some small plastic pieces i had to get out.

I had to find a replacement filter for the ITM foam filter in my old Conforti Cold-Air-Intake on my BMW M-Roadster. This was the closest matching size but because it is stiff, I had to disassemble the whole air intake system to get it in there and over the previous fiberglass intake tube. A considerable PITA! Seems to be just a little more restrictive air flow than before, but safer for engine longevity.

My mechanic recommended I replace my K&N filter for this one. Should be much better for offroad dust. Initial assessment is this is a quality product and appears to allow the necessary quantity of air to my Jeep.

I'll be more rest assured that particles are getting filtered and not making it into my engine, unlike the big oiled gauze competitor. I'm sure the the value must be there somewhere, as I also paid nearly double over the competition. This filter is the perfect replacement to work with popular intakes and will deliver longer life, longer interval between cleanings, and the best filtration with reduced restriction of all other brands I've seen.

recently i was informed that Fujita was out of business by many hi-performance parts stores. and i needed a dryflow air filter for my CA-2707M. after relentless searching at other on-line and retail auto parts chains, the best comparative filters were that of the oiled variety. unfortunately upon reading many forums, oiled filters oftentimes fouled up MAF sensors for '06-'12 mitusbishi eclipse gt's. after carefully measuring my stock Fujita FS-300S, i discovered that the AEM 21-203DK was a perfect fit. the AEM 7" length made it easier to reinsert my cold air intake into the fender-well as the Fujita 7.5" always rested against my inner fog lamp, which eventually always wore a hole in the filter through normal driving vibration. also after a month of normal use of the AEM i noticed better mileage and fewer TCL and/or check engine light displays (anyone who's an eclipse 4G owner with intake/exhaust mods knows how annoying that light can be). i'll definitely order 2 more as spares...

Cheaper than the other stores the quality is better than the original filter better airflow

esta muy bien de diseño pero es muy grande para mí cafetera , y esa tela texturizada no permite que el café fluya bien, fuera de eso vale lo que cuesta 🤤👌

سيء

I drive a Speed3 with a Corksport 3 inch short ram intake. Threw it right on, fit perfectly and didn’t bother any of my wiring. Car was sucking air just fine. Been on for a month or so, still no problems at all

Working like a charm. Very easy to setup and install.

It fits in my 08 GTI despite the tight space! Only issue is when I washed it with low-pressure water from a hose, some of the red fabric on the outside seems to have come off to reveal the yellowish-orange material underneath.