AEM 28-20857 DryFlow Drop-In Air Filter VW Touareg Porsche Cayenne Range Rover

Vehicle Fitment

• 2002-2010 Volkswagen Touareg - V6, V8, W12, and TDI diesel variants sharing this airbox filter dimension
• 2002-2009 Porsche Cayenne (955/957 generation) - V6, S V8, Turbo V8 variants
• 2006-2009 Land Rover Range Rover - V6 and V8 gas variants

Fitment Notes

• Direct drop-in replacement for the factory engine air filter - installs in the existing OEM airbox with no modifications required.
• Dual airbox applications - two filters may be required. The Volkswagen Touareg V8 and W12 variants and Porsche Cayenne S and Turbo V8 variants use a dual airbox configuration with one filter per cylinder bank. These applications require two units (2x PN 28-20857) for a complete air filter service. Verify your specific engine's airbox arrangement before ordering to confirm the quantity needed. V6 variants typically use a single airbox.
• This filter covers the first-generation 955-platform Touareg (2002-2007), the updated 7L-platform Touareg (2007-2010), the first-generation 955 Porsche Cayenne (2002-2006), and the refreshed 957 Cayenne (2007-2009), as well as the L322-platform Range Rover (2006-2009). All share the same airbox filter dimensions. Always confirm your specific year and engine against AEM's fitment lookup before ordering.
• This filter will not void your Volkswagen, Porsche, or Land Rover factory vehicle warranty.
• Sold individually - one filter per package.

Features

• AEM DryFlow Oil-Free Synthetic Media - Up to 99% Filtration Efficiency: The 28-20857 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 on the Touareg, Cayenne, and Range Rover's mass airflow-metered engines. The synthetic media does not degrade from repeated cleaning cycles the way cotton gauze can.
• Increased Horsepower and Throttle Response: AEM's lower-restriction synthetic media allows more air volume into the Touareg, Cayenne, and Range Rover V6 and V8 engines compared to the factory paper element - improving throttle response and supporting power gains across the rev range for both naturally aspirated and turbocharged applications.
• Extra-Long Panel - 15.188 in Length: At over 15 inches in length, the 28-20857 is one of the longest drop-in panel filters in AEM's lineup, providing exceptional filter media surface area for the high airflow demands of Touareg W12, Cayenne Turbo, and Range Rover V8 powertrains.
• Up to 4x Dust Holding Capacity vs. Competitive Filters: AEM's DryFlow media delivers up to four times the dust holding capacity of most popular competitive filters - extending service intervals between cleanings and providing outstanding protection in dusty environments.
• Washable and Reusable - Lifetime Filter: Clean with AEM filter cleaner (PN 1-1000), rinse with water, air dry completely, and reinstall - no oiling required. Designed to last the lifetime of the vehicle.
• Shed-and-Flow Design: Non-woven media sheds trapped dirt under engine vibration, maintaining consistent airflow performance as the filter loads up between cleaning cycles.
• Direct Drop-In Fit: Engineered as a direct dimensional replacement for the OEM paper element in the factory VW/Porsche/Land Rover airbox - no modifications, adapters, or additional hardware required.
• Will Not Void Factory Warranty: The 28-20857 will not void the Volkswagen, Porsche, or Land Rover manufacturer's vehicle warranty when used as directed.
• Made in the USA: Manufactured by AEM Induction Systems to precision quality standards.

Specifications

• Part Number: 28-20857
• Brand: AEM Induction Systems
• Product Type: DryFlow Drop-In OEM Replacement Panel Air Filter
• Filter Shape: Panel (flat)
• Filter Material: Non-Woven Synthetic (DryFlow - oil-free)
• Frame Design: Flexible
• Color: Red
• Outside Length: 15.188 in (386mm)
• Outside Width: 7.313 in (186mm)
• Height: 1.625 in (41mm)
• Weight: 1.600 lbs (0.7 kg)
• Oiling Required: No
• Washable / Reusable: Yes
• Filtration Efficiency: Up to 99%
• Dust Holding Capacity: Up to 4x competitive filter benchmark
• Country of Manufacture: USA
• Warranty: Lifetime Limited
• Quantity: 1 (sold individually - dual airbox applications require 2 units)

Included Components

• 1x AEM DryFlow OEM Replacement Panel Air Filter (28-20857)
• Note: Dual airbox applications (V8/W12 Touareg, Cayenne S/Turbo) require 2 units for a complete service

Product Description

The AEM 28-20857 is a DryFlow synthetic drop-in panel air filter for the 2002-2010 Volkswagen Touareg, 2002-2009 Porsche Cayenne (955/957), and 2006-2009 Land Rover Range Rover - three luxury SUVs that share the same OEM airbox filter dimensions despite their different platforms. The extra-long 15.188 x 7.313-inch panel is one of the largest in AEM's drop-in lineup, providing substantial filter media surface area for the demanding airflow requirements of W12, V8, and turbocharged V8 powertrains.

AEM DryFlow oil-free synthetic media delivers up to 99% filtration efficiency and up to 4x the dust holding capacity of most competitive filters without requiring filter oil - eliminating MAF sensor contamination risk and extending service intervals. Washable with AEM filter cleaner and reusable for the lifetime of the vehicle. Will not void VW, Porsche, or Land Rover factory warranty. Made in the USA. Lifetime Limited Warranty.

Important: V8 and W12 Touareg variants and Porsche Cayenne S/Turbo V8 variants use a dual airbox setup - a complete service requires two units (2x PN 28-20857). Confirm your engine's airbox configuration before ordering.