JB Performance replacement BMW Alpina B7 ASA Kompressor RG3 Supercharger impeller


In stock


Exact fit JB Performance™ direct fit replacement counter-clockwise billet impeller.  The blades must curve in a counter-clockwise pattern.

Direct fit for the following ASA Kompressor RG3 Superchargers. These are found on 2007-2008 BMW Alpina B7 engines.


RG 3 stock cast impeller:

  • Balanced by grinding, clipping, sanding, drilling.
  • Weight: 6.2 ounces.

JB PerformanceBillet impeller:

  • More total surface area for air to pass through, allowing up to 15% more air to flow through the impeller each rotation.
  • Direct fit with no machine work.
  • Narrower center section.
  • A2000 Alcoa Aluminum for stronger blade support.
  • Thinner blade design to allow more air to pass through same pocket size.
  • 10mm larger exducer outer diameter.
  • Digitally designed and tested by a company that specializes in improved air flow designs.
  • CNC balanced. by removing specific material with a cutting tool in the precise area.
  • Crack checked with X-ray technology.
  • Weight: 5.4 ounces.

Additional information

Weight 1 lbs
Dimensions 9 × 9 × 9 in


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