General description A two-piece tool set designed for the installation of the stretchy auxiliary belt on BMW vehicles, serving as a substitute for the original equipment (OE) tools. Technical specifications Material: Anodised aluminium and nylon Applications: Compatible with BMW vehicles equipped with the N52K 3.0L petrol engine Equivalent to OEM part numbers: 11 1 241 and 11 1 242 Usage Designed for use where a separate stretch belt is employed to drive the air conditioning pump Always turn the engine in the normal direction of rotation during use