The infamous impeller bearing. Known in the past to burnout but not anymore. Rated for 58,000 RPM and packed with high speed grease which the G74 stands for as per Barden. Precision bearings are expensive but can take the beating that only a Drouin SuperCharger can hand out. The same part # with but with a 'C' is of course the ceramic bearing which some will argue is better or worse. I am going with the steel bearing not because of cost but I believe will be the better bearing for the job.
