Powerflex Polyurethane Super Charger Belt Damper Bushings MINI Cooper Gen 1 PFF5-211 Powerflex polyurethane replacement Super Charger Belt Damper Bushings. Set of 2. Number 12 in the diagram. All Powerflex products come with Manufacturer's Lifetime Warranty! Powerflex copper-based grease is supplied with every bushing set! Fits: MINI Cooper (Gen 1 / 2001-2006)