B58 Charge Pipe For Gen 1 BMW M240I, 340i, 440i, 540i, 640i, 740i, X3, X4 - ARM Motorsports infiniti If you're running E85 or

If you're running E85 or ethanol mixes in your Audi S4

Filters available in red

Installation is easy and completely removable with no splicing or cutting of factory wires making the JB4 an excellent choice for your V12 engine

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E85 Compatible Walbro Pump: Choose between the standard Walbro 450 or the optional Walbro 525 pump

B58 Charge Pipe For Gen 1 BMW M240I, 340i, 440i, 540i, 640i, 740i, X3, X4 - ARM Motorsports infiniti If you're running E85 orThe ARM B58 Charge Pipe is a bulletproof charge pipe replacement for the plastic OEM B58 charge pipe. The ARM B58 Charge Pipe increases the diameter over the OEM charge pipe, resulting in increased airflow from the turbo to the engine, and improved throttle response. Upgrading the charge pipe on your B58 is one of the basic steps in ensuring your B58 is protected against a charge pipe failure. In addition to making sure you have a reliable means of