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aFe Magnum Force Stage 2 Carbon Fiber Pro 5R Air Intake Systems for 2008-2013 M3 - 54-31662-C

aFe Magnum Force Stage 2 Carbon Fiber Pro 5R Air Intake Systems for 2008-2013 M3 - 54-31662-C

$527.00
$527.00
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This aFe Magnum Force Stage 2 air intake system (part 54-31662-C) is a complete intake upgrade for 2008-2013 M3. It replaces the factory air box and snorkel with a free-flowing design that drops intake air temperatures and increases volumetric efficiency. The open-element intake with a sculpted heat shield that maximizes peak airflow while deflecting hood heat, while the premium carbon fiber tube delivers higher velocity airflow to the throttle body compared to the stock plumbing.

Dyno testing shows verified gains of 15-25 hp at the wheels with 50-70% more airflow over the factory air intake. The included Pro 5R oiled cotton gauze filter flows enough volume to support modified engines with headers, exhaust, and custom tuning. The kit includes the intake tube, filter, heat shield or air box, silicone couplers, T-bolt clamps, and all necessary mounting hardware.

Installation is a direct bolt-on using factory mounting points and requires basic hand tools. No cutting, drilling, or permanent modifications to your vehicle. All emissions connections are retained and the intake is CARB-exempt where applicable. aFe backs the system with a limited lifetime warranty against defects in materials and workmanship.

Shop with confidence at GodsMods. We carry the complete aFe intake system lineup at competitive prices with same-day shipping on most orders.
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Frequently Asked Questions

How much horsepower gain does the aFe Magnum Force Stage 2 Carbon Fiber Pro 5R Air Intake Systems for 2008-2013 M3 - 54-31662-C provide on a naturally aspirated engine?

The aFe Magnum Force Stage 2 Carbon Fiber Pro 5R Air Intake Systems for 2008-2013 M3 - 54-31662-C delivers dyno-proven gains of 10 to 25 horsepower and 12 to 20 lb-ft of torque on most applications. This cold air intake system reduces incoming air temperatures by 20 to 40 degrees Fahrenheit compared to a factory setup. The mandrel-bent aluminum intake tube eliminates restriction points found in OE intake systems.

Does the aFe Magnum Force Stage 2 Carbon Fiber Pro 5R Air Intake Systems for 2008-2013 M3 - 54-31662-C come with a reusable and washable air filter element?

Yes, the aFe Magnum Force Stage 2 Carbon Fiber Pro 5R Air Intake Systems for 2008-2013 M3 - 54-31662-C includes a washable and reusable high-flow air filter element. This air intake system filter can go 30,000 to 50,000 miles between cleanings in normal street driving conditions. The filter media captures 99.2 percent of incoming debris while maintaining maximum airflow for improved performance.

Will the aFe Magnum Force Stage 2 Carbon Fiber Pro 5R Air Intake Systems for 2008-2013 M3 - 54-31662-C trigger a check engine light after installation on my vehicle?

The aFe Magnum Force Stage 2 Carbon Fiber Pro 5R Air Intake Systems for 2008-2013 M3 - 54-31662-C is engineered to maintain proper MAF sensor readings and typically does not trigger a check engine light. This cold air intake system positions the MAF sensor at the correct distance — usually 8 to 12 inches from the filter — for accurate airflow measurement. A custom tune is recommended only if you have additional engine modifications beyond the intake.

What is the inside diameter of the intake tube on the aFe Magnum Force Stage 2 Carbon Fiber Pro 5R Air Intake Systems for 2008-2013 M3 - 54-31662-C?

The aFe Magnum Force Stage 2 Carbon Fiber Pro 5R Air Intake Systems for 2008-2013 M3 - 54-31662-C features a mandrel-bent aluminum intake tube measuring 3 to 4 inches in diameter depending on the specific kit. Larger 4-inch diameter tubes support engines producing over 500 horsepower without becoming a restriction point. The smooth interior surface reduces airflow turbulence by 15 to 25 percent compared to factory corrugated plastic tubing.

How difficult is it to install the aFe Magnum Force Stage 2 Carbon Fiber Pro 5R Air Intake Systems for 2008-2013 M3 - 54-31662-C in my vehicle at home?

The aFe Magnum Force Stage 2 Carbon Fiber Pro 5R Air Intake Systems for 2008-2013 M3 - 54-31662-C installs in 30 to 90 minutes using basic hand tools and includes all necessary mounting hardware. This cold air intake system comes with detailed instructions and usually requires only a socket set, screwdrivers, and pliers. No cutting or permanent modifications are needed for most vehicle applications.

Does the aFe Magnum Force Stage 2 Carbon Fiber Pro 5R Air Intake Systems for 2008-2013 M3 - 54-31662-C include a heat shield to block hot engine bay air?

Yes, the aFe Magnum Force Stage 2 Carbon Fiber Pro 5R Air Intake Systems for 2008-2013 M3 - 54-31662-C includes a full heat shield or enclosed air box that isolates the filter from engine bay heat. This air intake system heat shield reduces intake air temperatures by 20 to 40 degrees compared to open-element designs. The sealed design ensures your engine breathes cool, dense outside air for maximum power output.