Engine: B58/N55 Downpipe Fitting
A downpipe directs the exhaust gases from your vehicle's turbine housing into your exhaust system. The downpipe bolts right to the turbine housing. It is instrumental in moving the exhaust gases through the system as efficiently as possible.
Upgraded downpipes provide great increases in horsepower and torque on turbocharged vehicles by allowing exhaust gasses to flow easier as they leave the turbo.