Stage 3 Upgraded Pulleys for Mercedes 1.8 Kompressor M271These performance pulleys are engineered to increase the supercharger's boost pressure, thereby enhancing the engine's horsepower and overall performance. Constructed from high quality materials, they ensure durability and reliability under increased stress. The larger pulley is typically used for the crankshaft, while the smaller one is for the water pump, optimizing the rotational speed and efficiency of the compressor. Ideal for enthusiasts looking