Exact fit JB Performance replacement 5 axis billet aluminum impeller for ASA RG3 Superchargers. These are found on BMW Alpina B7 engines.
The design of this impeller will flow more air than a stock cast ASA impeller. This is achieved with a thinner and deeper inducer cutout as well as 10mm larger exducer outer diameter. Impeller height is raised slightly. Blade thickness can be thinned out due to use of higher strength A2000 series Alcoa aluminum which also contributes to performance. The weight of the impeller has been decreased from 6.2 ounces to 5.4 ounces. The impellers are CNC precision balanced. They are also x-rayed for any cracks or hidden defects.
3 year warranty against product failure. Conditions of warranty require operating the supercharger within RPM specifications.
JB Performance accepts trade in of undamaged factory impellers. Trade in value $100.