USA made AEM Filters Oil usage prohibited

AEM Dryflow™ Air Filters

Oil-Free Filtration
AEM Dryflow™ air filters do not use oil so there is no chance of over-oiling your filter which takes the guesswork out of servicing.

Easy to Clean
The Dryflow™ filter uses environmentally friendly, mild, all-purpose cleaner. Simple cleaning instructions. Under extremely dusty/dirty conditions, Dryflow™ filters can be knocked a few times to remove excess dirt off of the filter pleats. Dryflow™ filter media is so durable that it can withstand almost unlimited cleanings and also resists water absorption.

Warranty-Safe Filtration
Dryflow™ air filters will not void your warranty.

Sheds Dirt Under Vibration
AEM’s unique non-woven filter media does not require oil to filter and trap dirt and contaminants, and as a result an open air filter actually sheds dirt under engine vibration, unlike cotton-gauze which holds on to contaminants until you clean the filter.

Durable AEM Universal Clamp-on Air Filters
AEM Universal Clamp-on air filters come in two basic types. AEM's standard Dryflow™ air filter has a screen wire for rigid structural strength. These filters have a red colored oil-free filtering media. AEM's other clamp-on filter is the Brute Force Dryflow™ air filter. It is a durable filter that is a favorite in rough, dusty racing conditions. These filters have a gray colored filtering media. They are very durable and not as rigid.

AEM Dry-Flow filter technology

AEM standard Dry-Flow air filter

AEM Brute Force filter technology

Brute Force Dryflow™ filter media
bounces back to original shape

AEM Filter technology

Strength from the Inside Out

The Brute Force Dryflow™ media is tough. There is no risk of filter damage during shipping, installation or cleaning. These Dryflow™ filters will retain their shape and performance even after the most severe abuse. That is why winning race teams continue to choose the AEM Brute Force Dryflow™ air filter.


Strength from the Inside Out*
AEM reinforces round Brute Force Dryflow™ filter elements with a lightweight mineral-reinforced plastic cage that maintains the element’s structural integrity and eliminates the chance of the filter collapsing from flow demands, while also reducing the filter’s overall weight.

* Note: Dryflow™ Panel Filters and some universal filters are supported by co-pleated aluminum wire mesh.


Air Flow Capabilities
Every Dryflow™ air filter is engineered to exceed the normal flow capacities of the engine it is required for when clean. For example, a typical naturally aspirated 2.0L engine requires 253 CFM of flow. The filter that is manufactured by AEM for a 2.0L Acura RSX Type-S (21-204DK) delivers up to 565 CFM of flow when clean. You get great flow with Dryflow™, in addition to outstanding filtration and excellent dust holding capacity.


AEM Dryflow Filter Flow Data


Diesel engines require massive air flow. AEM has responded with a filter that dramatically exceeds that requirement without compromising filtering efficiency. For example, the AEM BFS-HD (PN 21-9221D) for the 2007 Dodge 6.7L Cummins Turbo Diesel exceeds the stock induction air flow by 84% when clean.


AEM Brute Force Flow Data


Plenty of Flow for Gas and Diesel!
AEM’s Dryflow™ Synthetic filter flows almost as well when it is dirty as it does when it is clean, and typically flows over twice as much air than is required for large displacement engines in vehicle applications covered by BRUTE FORCE intakes.


Many of AEM's competitors emphasize flow as a primary means of power production in air intakes. While flow is certainly an important part of the equation, AEM finds that tuning the inlet to work with the harmonics of the engine produces the best power gains. AEM addresses flow in the sense that the engine requires a given amount of flow, so AEM calculates its filter size to exceed this flow requirement by a wide margin to accommodate potential future engine modifications. This allows to retain a high level of filtration efficiency and still exceed the flow requirements of an engine. AEMs filters will trap more dirt, and consequently extend the life of the rings and seals in your engine.


By designing AEM's Dryflow™ filters to exceed the flow requirements for the size of the engine that AEM has designed the intake for, it allows to do two things. The first is that it allows you to add modifications that increase flow demand without exceeding the flow capabilities of the filter. Second, it extends the filter’s service cycle (you don’t have to clean it as often) because it can trap more dirt without sacrificing flow. Rest assured that AEM has taken flow into account for all of its intake designs and Dryflow™ filters will deliver more than adequate flow for your vehicle.


** All flow testing was conducted by AEM on a Superflow 1060 Super Bench flow bench. Results are single filter comparisons and will vary for other part numbers.