

🛠️ Protect your power—filter smarter, flow faster!
The AEM 30-3003 Water/Methanol Injection Filter is a robust, easy-to-install inline filter designed to protect your engine and pump by filtering particles down to 40 microns. Its durable polypropylene housing withstands high methanol concentrations, while the large filtering area maintains optimal flow rates up to 43 GPM. Fully serviceable and reusable, this filter ensures long-term performance and reliability for high-demand water/methanol injection systems.

| ASIN | B0032W3KH8 |
| Best Sellers Rank | #969,549 in Automotive ( See Top 100 in Automotive ) #6 in Automotive Performance Fuel Injectors & Parts #7,943 in Automotive Replacement Fuel Injection Products #11,092 in Automotive Replacement Air Filters |
| Brand | AEM |
| Customer Reviews | 4.4 4.4 out of 5 stars (150) |
| Date First Available | January 5, 2010 |
| Exterior | Painted |
| Item Weight | 3.17 ounces |
| Item model number | 30-3003 |
| Manufacturer | AEM |
| Manufacturer Part Number | 303003 |
| Model | AEM 303003 |
| OEM Part Number | 30-3003 |
| Product Dimensions | 5.91 x 3.94 x 1.97 inches |
| Safety Rating | NSF |
D**V
Awesome filter, easily serviceable
Not sure what other reviewers were expecting, it's a great product! I don't have a filtered bulkhead, nor a filter anywhere in my methanol system. I run ~33 gpm of methanol as my extra fueling in a turbo application. I got a piece of debris stuck in my injector nozzle and it tried to take my motor out running it lean for a brief second. This is a coarse 40 micron filter that would have caught that debris, but it's not such a fine filter that it will impede flow for a high flow application. I've read it's good to flow up to 43 gpm of methanol. It fits snugly in the housing. My filter did not have the AEM logo anywhere on it, nor any logo. Just solid black, which is fine, nobody sponsored me, I don't care to sponsor anyone.
R**F
Great methanol filter
Installed on an existing system on a Diesel so fittings were worthless for me, a nice option would have been no fittings or different choices
H**R
Perfect For Water Methanol Injection
So glad I installed this just before my injectors! Before using this I had no idea so much sediment was traveling through the pump and into the engine. Everything about this is simple; installation, checking, and cleaning. The cap simply screws off so you can take it to a sink for rinsing. Most of the sediment gets captured in the part that stays inline but a squirt from a water hose, carb cleaner, WD-40, or even just running the water injection will quickly wash out the sediment. And it attaches with push-lock connectors so if you want to pull the entire assembly, it is quick and easy. This has been installed on a daily driver with a modified 12 valve Cummins for about a year through ambient temperatures ranging by about 100 degrees F. There have never been any leaks. For a while I noticed my water injection was still coming on under boost but hardly using any water. Sure enough, this filter was clogged with mud. After quickly cleaning the filter the water methanol was working again as it should. This is a must have. I ordered in 2018 and received this filter just as it is advertised.
J**E
Five Stars
showed up as expected and functions like it should...
B**O
Just right size
Just installed so looks like good quality
M**N
I wanted the ones just like in the pic
The picture is not the same as the filter I received. Mine was slightly cracked on the outlet port as though someone had tried to tighten the fitting too much. Mine also was not an AEM branded piece. Most likely made by the same manufacturer but again the pic is not what you will receive. I had to return mine because of the crack and I also did not want the fittings that it used. I wanted the ones just like in the pic.
P**L
Great product
Exceptional quality and value. Couldn't be happier.
S**B
Three Stars
Seems cheaply made. Works so far. No leaks. No AEM stamp as in the photos.
A**R
it works but it cost to much for what it is
O**Z
Me ha gustado el propio filtro y no me ha gustado que solo venga con los enganches de tuvo por presión y no traigan para tubería flexible roscada.
A**T
A must have for your methanol set up!!! Great quality and fit!!!
S**M
Works fine with my Devil's Own methanol kit.
C**L
A must have in connection with the AEM water/meth kit
Trustpilot
2 weeks ago
2 months ago