N57 Charge Pipe Coupling Set - Billet Aluminium Intercooler Coupling
NOTE: you will require 2 of these for one conversion. N57 Charge Pipe Coupling Set A billet aluminium intercooler coupling set designed to adapt the BMW N57 charge air connector to aftermarket intercooler piping. Machined in-house from 6061 aluminium by Fusion Fab Industries, this replaces the factory plastic charge air connection with a solid, reusable alloy fitting. Why upgrade the charge air connector? The factory N57 charge air connectors are plastic and rely on a moulded lip plus an O-ring and spring clip to seal. They were designed around standard boost levels and factory piping. Once an N57 is running higher boost, a different intercooler, or custom piping — which is the norm in a conversion or performance build — the plastic connection becomes one of the first things to let go. Common problems with the factory connector: Cracking or splitting at the flange, especially on older, heat-cycled plastic Boost leaks under load, causing underboost fault codes and lost power Blowing off entirely at higher boost No practical way to adapt it to custom intercooler piping This billet set solves both problems at once — it gives you a stronger connection and a clean 2.5" transition into aftermarket piping. Specifications Part Number FFi_IC_CPLN_SET Manufacturer Fusion Fab Industries Material 6061 aluminium, CNC machined Pipe Size Suits 2.5" intercooler piping Application BMW N57 charge air connector / intercooler coupling Weight 0.17kg Origin Australian made What's Included 1 x Billet aluminium coupling 1 x Retaining spring 1 x Seal Applications BMW N57 3.0 litre diesel engines running aftermarket intercooler piping N57 engine conversions and swaps — including Nissan Patrol N57 builds Performance N57 setups with upgraded intercoolers or increased boost Any N57 install where the factory plastic charge air connector needs replacing with a serviceable alloy fitting Important Notes Designed for use with 2.5" aftermarket charge piping. Confirm your pipe size before ordering. Sold as a coupling set only — intercooler piping and hoses are not included. Inspect and lubricate the seal on installation, and confirm the retaining spring is fully seated before applying boost. If you're not sure whether this suits your build, get in touch and we'll help you check.