BMW 5 Series F18 facelift gasoline pump assembly 16117260642.

BMW 5 Series F18 facelift (2013-2017) automatic transmission gasoline pump assembly, OEM number 16117260642. This assembly uses an engineering plastic pump body and copper-core motor identical to the original, with tested density and fuel-resistant properties that resist deformation or aging when submerged in fuel. Replacing restores standard fuel pressure. Core duty is to steadily deliver fuel from the tank to the engine to ensure proper injector atomization and avoid idle vibration or sluggish acceleration. Installation involves removing the rear seat and disconnecting fuel hoses; moderate difficulty, recommended to use specialized tools to protect sealing rings.