Air and Fuel Air Cleaners, Filters, Intakes and Components

AEM

AEM C.A.S. 17-18 Subaru Legacy H4-2.5L F/I Cold Air Intake

$460.92

SKU: A005 21-856C

In Stock
In Stock
Ships by Jun 17
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The AEM Performance Cold Air Intake System replaces the restrictive factory air filter and housing, producing horsepower and torque gains. This air intake system was designed, tuned, and dyno-tested to fit specific models. Air enters the system through an oversized AEM Dryflow synthetic washable air filter for outstanding air flow, filtration and performance. The air filter is protected by a heat shield which is designed to reduce intake air temperature and increase horsepower. The intake tube is constructed from mandrel-bent aluminum featuring a durable gunmetal gray powder coated finish. This air intake system was developed to accommodate the engine's factory emissions control devices including the mass airflow sensor and breather tube. The oil-free, synthetic Dryflow air filter can be used for up to 100,000 miles before cleaning is needed. The air intake system is easy to install with commonly available tools and it is backed by AEM's Lifetime Limited Warranty. Estimated Horsepower Gain - 5.8 HP at 5800 RPM.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandAEM
Part NumberA005 21-856C

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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