AEM 21-2073DK DryFlow 5 in Conical Air Filter 6.44 in Base x 5 in H Universal

Vehicle Fitment

• Universal - fits any cold air intake, short ram intake, or intake tube with a 5.000 in (127mm) outside diameter pipe end
• Suitable as a replacement filter on existing AEM cold air intake systems using 5-inch intake tubing, or as a primary filter element on custom intake builds with large-diameter intake tubing
• Well suited to large-displacement V8 truck and SUV engines, diesel applications, and high-flow performance builds where 5-inch intake tubing is used
• Some adaptation may be required depending on installation - confirm pipe OD matches the 5.000 in flange ID before ordering

Fitment Notes

• NOT CARB Compliant - Not for street use in California or other CARB-adopting states (including New York and Maine). The 21-2073DK is not legal for installation on vehicles required to meet CARB emissions standards. Intended for off-road, race, or performance builds in non-CARB jurisdictions.
• The 21-2073DK is a clamp-on universal conical filter, not a vehicle-specific drop-in panel filter. It requires a 5.000 in (127mm) OD intake tube. Secure with a standard hose clamp (not included) over the flange.
• The 5-inch flange ID makes this one of the largest-inlet DryFlow clamp-on filters in AEM's standard lineup - it is intended for large-diameter intake systems on high-displacement or high-performance engines where 5-inch tubing is used.
• For replacement filters on AEM cold air intake systems, verify this part number matches the original filter supplied with your specific AEM intake kit before ordering.

Features

• AEM DryFlow Oil-Free Synthetic Media - Up to 99% Filtration Efficiency: The 21-2073DK uses AEM's DryFlow non-woven synthetic filter media, delivering high airflow and up to 99% contaminant capture efficiency without requiring filter oil. Eliminates the risk of MAF sensor contamination from oil overspray, and the synthetic media does not degrade from repeated cleaning cycles the way cotton gauze can.
• 5-Inch Flange - Large-Diameter Intake Applications: The 5-inch inlet flange is sized for the large-diameter intake tubing used on high-displacement V8 truck engines, diesel performance builds, and modified applications where maximizing intake flow area is a priority. The wide flange supports the filter on the largest common intake tube sizes in the automotive and truck performance aftermarket.
• 6.4375-Inch Base OD - Maximum Filter Surface Area: The wide 6-7/16-inch base OD provides substantial filter media surface area for high airflow capacity, even in the compact 5-inch body height - keeping intake restriction low at high flow rates on large-displacement engines.
• Tapered Conical Profile: The cone tapers from a 6.4375-inch base OD down to a 5.125-inch top OD across a 5-inch height, providing more filter surface area than a straight cylindrical filter of equivalent inlet size while maintaining a compact, manageable overall footprint.
• Reinforced Internal Cage - Lighter and Stronger Than Mesh: The flexible reinforced internal cage resists collapse under high engine vacuum and airflow conditions while keeping overall filter weight low.
• Urethane Body - Won't Shrink or Crack: Constructed from urethane, the filter body maintains its shape and sealing properties through heat cycling and long service life without shrinking or cracking.
• Integrated Velocity Stack in Flange Neck: The 5-inch flange incorporates an integrated velocity stack profile that increases structural rigidity and smooths airflow entry into the filter body.
• Closed Rubber Top Cap - Filter Top for Higher Airflow: The closed top cap directs all incoming air through the full conical media surface, maximizing effective filtration area and flow capacity.
• Washable and Reusable: Clean with AEM filter cleaner (PN 1-1000), rinse with water, air dry, and reinstall - no oiling required.
• Outstanding Performance in Dusty Conditions: The DryFlow media maintains both airflow and filtration efficiency in dusty and demanding environments, performing well even during track days and off-road/race use.
• Made in the USA: Manufactured by AEM Induction Systems to precision quality standards.

Specifications

• Part Number: 21-2073DK
• Brand: AEM Induction Systems
• Product Type: DryFlow Universal Clamp-On Conical Air Filter
• Filter Shape: Round conical (tapered)
• Filter Material: Non-Woven Synthetic (DryFlow - oil-free)
• Internal Cage: Flexible reinforced
• Flange Inside Diameter: 5.000 in (127mm) - fits 5-inch OD intake pipe
• Flange Angle: 0 degrees (centered, straight)
• Flange Type: Centered (1 flange)
• Outside Diameter (Base): 6.4375 in (6-7/16 in / 164mm)
• Outside Diameter (Top): 5.125 in (130mm)
• Height: 5.000 in (127mm)
• Top Style: Closed rubber cap
• Oiling Required: No
• Washable / Reusable: Yes
• Filtration Efficiency: Up to 99%
• CARB Compliance: Not CARB compliant - not for street use in CA, NY, ME, or other CARB-adopting states
• Country of Manufacture: USA
• UPC: 024844368881
• Warranty: 1 Year Limited
• Quantity: 1 (sold individually)

Included Components

• 1x AEM DryFlow Universal Clamp-On Conical Air Filter (21-2073DK)
• Note: Intake pipe, hose clamp, and heat shield sold separately

Product Description

The AEM 21-2073DK is a universal DryFlow clamp-on conical air filter for 5-inch intake tubing - a tapered cone measuring 6.4375 inches at the base, 5.125 inches at the top, and 5 inches tall, with a 5-inch centered inlet flange. It is one of the largest-inlet standard DryFlow clamp-on filters in AEM's lineup, designed for high-displacement V8 truck and SUV engines, diesel performance builds, and any custom intake application using 5-inch diameter tubing where maximizing intake flow area is a priority.

AEM's DryFlow oil-free synthetic media delivers up to 99% filtration efficiency without requiring filter oil - eliminating MAF sensor contamination risk and simplifying maintenance to a wash-and-reinstall cycle. The tapered 5-inch body provides strong airflow capacity at large inlet sizes, with the reinforced internal cage and urethane body ensuring long-term structural integrity. Closed top cap maximizes effective filter surface area across the full conical body.

Not CARB compliant - not for street-registered vehicles in California, New York, Maine, or other CARB-adopting states. Fits any 5.000 in (127mm) OD intake tube. Some adaptation may be required. Secured with a standard hose clamp. Washable and reusable. Made in the USA. 1-year limited warranty.