AEM DryFlow Air Filter 4″ Inlet 9″ Universal

AEM Induction DryFlow Air Filter — 4-Inch Inlet / 9-Inch Length (Universal)

The AEM Induction DryFlow Air Filter provides high-flow, synthetic dry filtration for custom air intake builds, engineered with a 4-inch inlet diameter and a 9-inch length. As a universal filter, this AEM DryFlow unit is designed to be adaptable across a range of custom intake configurations, though some adaptation may be required depending on your specific setup.

AEM Induction — Trusted Performance Filtration Engineering

AEM has built a strong reputation in the performance intake and filtration industry for producing well-engineered, high-flow filtration products used across a broad range of performance and race applications. AEM’s DryFlow filter line represents the brand’s synthetic dry filtration technology, offering an oil-free alternative within their performance filter lineup.

DryFlow — Synthetic Dry Filtration Technology

Unlike oiled cotton-gauze filters, AEM’s DryFlow media is a synthetic, multi-layer dry filtration design. This offers several practical benefits: dry filters don’t require oiling during cleaning and maintenance, reducing the risk of over-oiling issues that can occasionally affect certain mass airflow sensors, while still providing effective filtration and strong airflow characteristics for performance applications.

4-Inch Inlet / 9-Inch Length Sizing — Extended Length for Increased Surface Area

This specific filter is sized with a 4-inch inlet diameter and a longer 9-inch overall length, providing significantly more filter media surface area than shorter filters of the same inlet diameter. This extended length design is well-suited for custom intake tube fabrication projects, aftermarket turbo system builds, or other applications where increased filtration surface area is desired within a compact inlet diameter — often used where mounting space favors length over width.

Universal Application for Custom Builds

As a universal filter, this AEM DryFlow unit is commonly used in custom intake fabrication, turbo/supercharger system builds, and other applications where a standard OEM-replacement filter isn’t appropriate. Because these applications vary significantly in their specific configuration, some adaptation may be required for proper integration into your particular build.

Reusable and Washable

Like AEM’s other DryFlow products, this filter is designed to be cleaned using AEM’s specific dry filter cleaning process, allowing it to be reused over time without the oiling process associated with traditional oiled cotton-gauze filters.

Best Suited for Custom Fabrication Projects

Given the universal nature of this filter and the technical considerations involved in custom intake design — including proper filter sizing, airflow direction, and mounting clearance — this product is best suited for experienced fabricators, custom intake builders, or those working with a knowledgeable performance shop.

Specifications:

• Component Type: Universal Air Filter
• Filter Line: AEM Induction DryFlow
• Media Type: Synthetic Dry
• Inlet Diameter: 4 Inches
• Filter Length: 9 Inches
• Application: Universal — some adaptation may be required

Who Is This Product For?

The AEM Induction DryFlow Air Filter (4″ Inlet / 9″ Length) is ideal for:

• Custom intake fabrication builders needing increased filter surface area in a compact diameter
• Turbo or supercharger system builders requiring high-flow filtration
• Those preferring synthetic dry filtration over oiled cotton-gauze media
• Experienced fabricators and performance shop professionals
• Builders with mounting space favoring a longer, narrower filter profile

Why Choose AEM DryFlow?

AEM is a well-respected name in the performance intake and filtration industry, and their DryFlow line offers a synthetic, oil-free alternative for builders who want to avoid the oiling process associated with traditional cotton-gauze filters while still getting strong airflow performance for custom applications.

Important Sizing Considerations

Because this is a universal filter defined by specific inlet and length dimensions, carefully confirm that the 4-inch inlet and 9-inch length specifications match your intended intake tube and available mounting clearance before ordering — the extended length in particular requires adequate space in your engine bay or intake routing.

Installation & Fitment Notes

As a universal product, exact compatibility depends on your specific custom intake configuration. Confirm inlet diameter, filter length, and available mounting clearance before purchase. Installation is typically straightforward for those experienced with custom intake fabrication, involving securing the filter to the appropriate intake tube diameter.

Upgrade your custom intake build with the AEM Induction DryFlow Air Filter in 4-Inch Inlet / 9-Inch Length — high-flow, easy-maintenance synthetic filtration with increased surface area for performance applications.

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Product Features

• Synthetic DryFlow media — no oiling required
• High-flow design suited for custom and performance intake builds
• Extended 9-inch length provides increased filter surface area
• Compact 4-inch inlet diameter for narrower mounting spaces
• Reusable and washable using AEM’s dry filter cleaning process
• Engineered by AEM, a trusted name in performance filtration

FAQs

1. Will this filter fit my intake?

It’s a universal filter sized with a 4-inch inlet and 9-inch length — confirm this matches your specific intake tube diameter and available mounting clearance before ordering.

2. What is DryFlow filtration?

It’s AEM’s synthetic dry filter media technology, offering an oil-free alternative to traditional cotton-gauze filters while still providing effective filtration and airflow.

3. Why choose a 9-inch length over a shorter filter?

The extended 9-inch length provides significantly more filter media surface area within a compact 4-inch inlet diameter, useful when mounting space favors length over width.

4. Do I need to oil this filter?

No, DryFlow filters use synthetic dry media and do not require oiling — a different, dry-specific cleaning process is used for maintenance.

5. Is this a complete intake system?

No, this is a standalone universal air filter designed for custom intake fabrication or replacement on an existing custom intake system.

6. Can this filter be reused?

Yes, DryFlow filters are designed to be cleaned and reused using AEM’s specific dry filter cleaning process.

7. Is AEM a reliable filtration brand?

Yes, AEM Induction is a well-established, respected brand in the performance intake and filtration industry.

8. Does this product come with an item/part number?

None was provided — if you have one, send it and I’ll add it to the listing for consistency.

9. Do I need any special tools to install this?

Installation typically involves securing the filter to the appropriate intake tube using its clamp mechanism; specific tools may vary depending on your custom build.

10. Will this filter fit intakes with a different inlet size?

No, this specific filter is sized for a 4-inch inlet — confirm your intake tube’s exact diameter before ordering, as AEM offers DryFlow filters in multiple sizes.

For performance tuning guides visit Summit Racing or explore technical specs at JEGS High Performance.

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