TCM Charge Pipe Kit for BMW B46/B48 Engines – High-Flow Aluminum Upgrade Premium aluminum charge pipe designed for B46/B48 turbocharged engines in F-series and G-series BMW models. This high-flow upgrade replaces the factory plastic pipe with precision-engineered performance. Experience improved throttle response, reduced turbo lag, and enhanced engine reliability. The mandrel-bent T6061 aluminum construction withstands aggressive boost levels without cracking or failure. CNC-machined flanges ensure OE-quality fitment, while premium components—4-ply silicone connectors, stainless steel hardware, and robust red powder coat—deliver durability and style. Includes 1/8″ NPT water-methanol injection bung for tuning flexibility. Essential upgrade for vehicles running elevated boost pressure. Replaces OEM part 13718601683. Compatible with 230i, 330i, 330e, 430i, 530i, 530e, 740e, X3, X4, and Z4 models (2016–2026).
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