ATI Damper - Alum - Mini Cooper - B46/B48 - 3 Ring

This ATI crankshaft damper, part number 917999, is constructed from aluminum and features a three-ring design. This specific design helps to control torsional vibrations that occur in the crankshaft, especially in performance-oriented engines like those found in Mini Coopers with B46 and B48 engines. By effectively dampening these vibrations, the damper helps protect the crankshaft from premature wear and can contribute to a smoother running engine.

The aluminum construction makes this damper lighter than a stock cast iron unit, which can offer a slight advantage in reducing rotational mass. The three-ring setup is a well-known ATI feature that provides a significant amount of damping capacity, making it a solid option for Mini Cooper owners looking to maintain or improve their engine's longevity and performance. It's designed to fit right into the factory location, simplifying the installation process for mechanics and DIYers alike.

When installing this damper, ensure you have the proper tools to remove and install the crankshaft pulley bolt, as it's typically torqued to a high specification. Refer to the manufacturer's installation instructions for specific details and torque values to ensure a correct and safe installation.