aFe MagnumForce Stage 2 Si Intake System Pro 5 R Black 06-12 BMW 3 Series E9x L6 3.0L Non-Turbo - 54-81012-B fits_2001-2003`Acura`CL FRONT REAR SPRING RATES 16k

FRONT REAR SPRING RATES 16k Varies (See Below)

Positioned strategically behind the front grills these air ducts create a potent "ram-air" effect optimizing performance under the hood

lightweight system that delivers exceptional performance and a captivating induction sound

Vacuum exhaust valves with factory-style operation

aFe MagnumForce Stage 2 Si Intake System Pro 5 R Black 06-12 BMW 3 Series E9x L6 3.0L Non-Turbo - 54-81012-B fits_2001-2003`Acura`CL FRONT REAR SPRING RATES 16kSealed, molded plastic or aluminum cover provides factory style with less intake noise than open systems. Our specially engineered air box openings pull cold air from outside the engine compartment increasing engine efficiency and producing greater performance gain. The cross linked polypropylene rotomolded plastic air box replaces restrictive stock air box and ensures a consistent supply of cold fresh air; built in ram scoop forces cold, outside air