B58 Gen 1 Charge Pipe - 240/340/440/540B58 Gen 1 Charge Pipe BMW 240 340 440 540 Eliminate one of the most common failure points on the BMW B58 Gen 1 platform with the CenCal Motorsport B58 Gen 1 Charge Pipe. The factory plastic charge pipe is prone to cracking under increased boost, especially on tuned vehicles. Our upgraded charge pipe is designed to handle higher boost pressures while improving airflow and long term reliability. Constructed from high strength metal and precision