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aFe Power 54-81912 MagnumFORCE Stage-2 Si PRO 5R Intake System


aFe Power 54-81912 MagnumFORCE Stage-2 Si PRO 5R Intake System Incl. Air Filter/Lower Sealed Air Box/1-Piece Dyno Tested Roto-Molded Intake Tube - +9 HP/+14 Lbs. x Ft. Torque

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aFe Power - MagnumFORCE Stage-2 Si PRO 5R Intake System P/N 54-81912 Features:

  • Uses Pro 5R Filter For Maximum Air Flow
  • 360 deg. Radial Flow Air Filter
  • 5 Layer Progressive Weave Oiled Media
  • Washable And Reusable Air Filter
  • Sealed
  • One Piece Rotomolded heat-Insulating System
  • Direct Clip-On
  • All Hardware Included
  • Simple Installation
  • Silicone Coupling
  • Limited 2 Year Warranty

View the Full List of Automotive Applications »

Below is an abbreviated list of applications for the MagnumFORCE Stage-2 Si PRO 5R Intake System.
135i, 335i, 335i xDrive, X1, BMW, 2015, 2014, 2013, 2012, 2011


Advanced Flow Engineering, Inc. (aFe) produces high flow, high performance air filters & intake systems for the automotive industry. Founded in April, 1999, aFe was created to address an obvious need in the automotive aftermarket industry: a lack of choice for a high performance aftermarket air filter. We are a team of engineers, machinists, production and sales people who believe in the product we design. We each have years of experience in our respective positions and together work to ensure that we have the best product on the market. Our purpose was not just to be another vendor that offers air filters, we chose to pay attention to those finer details that set an aFe filter apart from the competition. We currently offer aftermarket air filters for passenger cars, light trucks and SUV's. We also have many applications for round racing and universal clamp-on filters. To find your particular application, please use our new search engines. If you do not see your particular application listed, please contact us.

Shipping Information

  • Item Requires Shipping
  • 9.0 lbs.
  • W13.0000” x H16.0000” x L23.0000”