aFe Magnum FORCE Stage-2 Pro Dry S Cold Air Intake 51-12922-B – BMW 230i / 330i / 430i (B48)

OVERVIEW

The aFe Power Magnum FORCE Stage-2 cold air intake replaces the factory airbox on the B46/B48-powered BMW 230i, 330i and 430i. A CAD-designed, dyno-tuned roto-molded intake tube feeds a 7" conical filter, flowing 350 CFM at 7" H₂O for dyno-tested gains of up to +12 horsepower and +12 lbs. x ft. of torque.

This version uses the oil-free Pro DRY S filter, built from three layers of synthetic media for excellent filtration efficiency with no re-oiling required at service time. A lightweight vacuum-formed black plastic cover gives a stealthy under-hood look and reduces intake noise without sacrificing power; an auxiliary air inlet feeds additional cool air, and a urethane plug is supplied if you prefer to block it off.

All clamps, couplings and hardware are included. The kit is a direct bolt-on that requires no cutting or drilling of factory parts.

SPECS

• Dyno-tested gains: +12 HP and +12 lbs. x ft. of torque (peak)
• Measured airflow: 350 CFM @ 7" H₂O
• Outflows the factory intake
• Filter media: aFe Pro DRY S oil-free, 3-layer synthetic media (aFe P/N 21-90096)
• Filter size: 7" tall conical, 360-degree radial-flow element
• Intake tube: CAD-designed, dyno-tuned roto-molded plastic (aFe P/N 05-76312B1)
• Cover: lightweight vacuum-formed black ABS plastic (aFe P/N 05-12912B2)
• Auxiliary air inlet in the cover, with a urethane block-off plug included
• Installation: direct bolt-on — no cutting or drilling of factory parts
• Fitment note: does not fit Convertible models
• Emissions status: not CARB exempt at this time — not legal for sale in California or for use on any vehicle registered with the California Department of Motor Vehicles.

PARTS INCLUDED

• Pro DRY S air filter (21-90096) — 1
• Black vacuum-formed intake cover (05-12912B2) — 1
• Roto-molded intake tube (05-76312B1) — 1
• Silicone plug (05-01387) — 1
• Silicone double-hump coupling (05-01416) — 1
• Hose clamp, #060 (03-50002) — 2
• M4 Torx screw (03-50490) — 2

TECH RESOURCES

Additional Parts Required

• None. aFe Power specifies no additional hardware, tune or fluids for this intake — it is a direct bolt-on kit that requires no cutting or drilling of factory parts.
• Installer-supplied: basic hand tools, including a T-handle or driver for M4 Torx screws and a nut driver for the hose clamps.
• Optional service item: the Pro DRY S filter is washed and air-dried only — no filter oil is required.

Installation

• aFe Power 51-12922-B / 51-12922-C / 54-12922-C installation instructions (PDF)

Notes

• Does NOT fit Convertible models. Year ranges above follow aFe Power’s current installation instructions rather than the wider ranges previously shown in this listing. 2016 330i / 330i xDrive coverage is for non-US-market cars. Confirm fitment with Speed Logic before ordering.

PART NUMBER

• 51-12922-B — Magnum FORCE Stage-2 intake, Pro DRY S filter, black cover (this listing)
• 51-12922-C — same kit with Pro DRY S filter and carbon fiber look cover
• 54-12922-C — same kit with Pro 5R oiled filter and carbon fiber look cover

VEHICLE APPLICATIONS