Due to the current COVID-19 pandemic, we are experiencing delays on shipping some products. ×

Magnum FORCE Stage-2 Si Cold Air Intake System - Black Trim w/Pro DRY S Filter Media

BMW 128i (E82/88) 08-13
3-Series (E90/91/92/93) 06-13
L6-3.0L N52
Part Number: 51-81012-B

MSRP: $570.94


  • +12 HP / +15 lbs. x ft. Torque max gains
  • Outflows factory intake by 56%
  • High Quality Plastic CAD-Designed Roto-Molded Intake Tube
  • High Quality Plastic One-Piece Housing featuring Dual "Kidney" Grille Auxiliary Air Inlet Ducts
  • Pro Dry S oil-free, washable/reusable air filter for maximum performance
  • Washable and Reusable for Multiple Cleaning Cycles
  • No Cutting or Drilling on OEM Parts for Faster Installation
Read More

This Stage-2 Sealed Intake produces 12 hp and 15 lbs. x ft. torque and outflows the factory intake by 56%. Fully enclosed in a heat-shielding molded plastic housing; this air intake system features a washable/reusable conical air filter that improves airflow for increased horsepower and torque. The housing features auxiliary inlet duct for better airflow as well as an attractive black vacuum formed plastic cover that provides ready access to the filter for servicing. This intake system also features a heat-insulating molded plastic tube that replaces the stock intake tract and directs increased air flow with improved volumetric efficiency for maximum performance. The filter is constructed with 100% polyurethane for long life and multiple cleaning cycles.

Vacuum Formed ABS Cover:
This intake is topped with a vacuum formed ABS black cover that seals out hot intake air and provides an aggressive yet elegant look to your 3-series.

Dual "Kidney" Auxiliary Air Inlet Ducts:
aFe engineers have added two auxiliary air inlets to provide additional air volume. These two ducts are styled in the "Kidney Bean" Style that have made BMW famous.

6" Conical Air Filter with Inverted Top:
This intake utilizes a huge, 6" conical Pro DRY S performance air filter with inverted top for increased flow and maximum convenience. This 3-layer progressive, synthetic media air provides increased flow and requires no oils for maximum convenience.

Fully Sealed Design:
aFe engineers have designed a very sophisticated 2-piece sealed intake that keeps out warm underhood air and brings in cooler, outside air for a denser air intake charge.

Mounts In Factory Location:
aFe has developed this intake to provide a hassle-free installation that utilizes all factory mounting locations.

Fitment Note:
This item will fit models equipped with active or non-active steering

Emissions Disclaimer:
Some or all of the applications listed are 50-state exempt, please see CARB EO# D-550-38 for details.


Vehicle Applications

Year Make Model SubModel Engine Fuel
2008-2013BMW 128i (E82/E88) N52 Engine L6 3.0L Gas
2006-2006BMW 325i (E90) N52 Engine L6 3.0L Gas
2006-2006BMW 325xi (E90/E91) N52 Engine L6 3.0L Gas
2007-2011BMW 328i (E90) N52 Engine L6 3.0L Gas
2007-2012BMW 328i (E91) N52 Engine L6 3.0L Gas
2007-2013BMW 328i (E92/E93) N52 Engine L6 3.0L Gas
2009-2011BMW 328i xDrive (E90) N52 Engine L6 3.0L Gas
2009-2012BMW 328i xDrive (E91) N52 Engine L6 3.0L Gas
2009-2013BMW 328i xDrive (E92) N52 Engine L6 3.0L Gas
2007-2008BMW 328xi (E90/E91/E92) N52 Engine L6 3.0L Gas
2006-2006BMW 330i (E90) N52 Engine L6 3.0L Gas
2006-2006BMW 330xi (E90) N52 Engine L6 3.0L Gas
Reviews (0)

Be the first to review this product


Please wait...

Item has been added to your shopping cart

Keep Shopping

View Shopping Cart

Item has been removed from your shopping cart

Keep Shopping

View Shopping Cart