aFe 54-12912-B Cold Air Intake for 2016-2021 BMW 3/4 Series B58 3.0L

Vehicle Fitment

• 2016-2018 BMW 340i (Gas, L6-3.0L B58)
• 2016-2019 BMW 340i GT xDrive (Gas, L6-3.0L B58)
• 2016-2018 BMW 340i xDrive (Gas, L6-3.0L B58)
• 2017-2020 BMW 440i (Gas, L6-3.0L B58)
• 2017-2020 BMW 440i Gran Coupe (Gas, L6-3.0L B58)
• 2017-2020 BMW 440i xDrive (Gas, L6-3.0L B58)
• 2017-2020 BMW 440i xDrive Gran Coupe (Gas, L6-3.0L B58)
• 2017-2019 BMW M140i (Gas, L6-3.0L B58)
• 2017-2021 BMW M240i (Gas, L6-3.0L B58)
• 2017-2021 BMW M240i xDrive (Gas, L6-3.0L B58)

Features

• Magnum FORCE Stage-2 cold air intake system engineered for increased airflow and throttle response
• Pre-oiled Pro 5R performance air filter with 7" tall conical design
• 360° radial flow filter media with 5 layers for maximum filtration and airflow
• Dyno-tuned roto-molded intake tube for smooth, unrestricted air delivery
• Vacuum-formed black plastic cover with auxiliary air inlet for a stealthy under-hood look
• Includes urethane plug for auxiliary inlet closure if desired
• All clamps, couplings, and hardware included for bolt-on installation
• Direct replacement - no cutting or drilling required

Specifications

• Part Number: 54-12912-B
• System Type: Magnum FORCE Stage-2 Cold Air Intake
• Air Filter Media: Pro 5R pre-oiled cotton gauze
• Filter Size: 7" tall conical
• Intake Tube Material: Roto-molded plastic
• Fitment: Direct replacement cold air intake system
• Engine Compatibility: Gas L6-3.0L B58 twin-turbo
• Drivetrain: RWD and xDrive AWD supported
• Flow Increase: Up to ~11% over factory
• Estimated Gains: ~+9 HP and +10 lb-ft torque (varies by model)
• Emissions: Not CARB exempt - not legal for sale/use in California

Included Components

• 1x Magnum FORCE Stage-2 Cold Air Intake assembly (54-12912-B)
• 1x Pro 5R performance air filter
• 1x Vacuum-form intake cover
• 1x Dyno-tuned intake tube
• 1x Urethane auxiliary inlet plug
• 1x Hardware & clamp kit

Product Description

The aFe 54-12912-B Magnum FORCE Stage-2 Cold Air Intake System is a direct-fit performance upgrade for BMW 3 and 4 Series models powered by the B58 3.0L twin-turbo inline-6 engine. This system replaces the restrictive factory intake with a high-flow Pro 5R air filter and a dyno-tuned intake tube to significantly improve airflow, enhancing throttle response, horsepower potential, and torque delivery. The vacuum-formed intake cover with auxiliary inlet adds a stealthy under-hood appearance while minimizing intake noise without sacrificing performance.

Installation is straightforward and truly bolt-on, requiring no cutting or drilling. All necessary couplings, clamps, and hardware are included for a hassle-free upgrade. The tall conical Pro 5R filter provides excellent airflow and filtration, helping maintain engine protection while extracting more performance from the B58 platform. Note that this intake is not CARB exempt and is not legal for sale or use in California or other CARB states. Fitment is confirmed for a range of 2016-2021 BMW models with the 3.0L B58 engine, including rear-drive and xDrive all-wheel-drive variants.