This VRSF charge pipe is a direct replacement for the factory charge pipe on the E60/E61 BMW 535i with the N54 engine. It's powder-coated black aluminum with a CNC billet aluminum throttle-body flange, matched to the factory 3" throttle body sizing for a leak-free connection.The factory charge pipe is a common failure point on the N54 - it's plastic, and it's a known point where boost leaks develop as the car ages or once boost levels increase. This pipe replaces it in aluminum, with the factory c-clip retention design carried over for a tighter seal than a standard clamp-and-coupler setup.Important Compatibility InformationChoose the diverter valve option that matches your setup: OEM Twin DV retains the factory diverter valves, while the Tial/Turbosmart option is machined for those aftermarket blow-off valves instead.Features Powder-coated black aluminum construction CNC billet aluminum, throttle-body-matched flange Retains the factory c-clip design for the throttle-body seal Includes a plugged 1/8" NPT bung for water injection What's Included VRSF aluminum charge pipe Couplers and clamps for installation Replacement c-clip and o-ring Hardware to retain the factory diverter valves Product Specifications SKU: V02D 10601028 (OEM Twin DV) / V02D 10891020B (Tial/Turbosmart) MPN: 10601028 / 10891020B Material: powder-coated aluminum Built for the E60/E61 BMW 535i with the N54 engine Related UpgradeBMP also carries VRSF's Performance HD FMIC for the same E60 535i N54 platform.Frequently Asked QuestionsWhich diverter valve option do I need?Pick OEM Twin DV if you're keeping the factory diverter valves, or Tial/Turbosmart if you're running one of those aftermarket blow-off valves.Does this include a water injection bung?Yes, one plugged 1/8" NPT bung is included for a future water injection setup.