BMW Direct Injection Fuel Injector 13537585261-11/12/05/07/08/09 High-precision atomization Original factory standard

This replacement part uses the same high-precision manufacturing process as the original factory, with laser-micro-machined nozzle orifice and valve body sealing surface. Atomized particle diameter is controlled within 50 microns, durability over 100,000 kilometers, and will not exhibit early leakage or blockage. OEM part number is 13537585261, also compatible with 13537537317, 13538616079, 13537589048-11 and other numbers, suitable for BMW N20/N55 series engines, covering 3 Series, 5 Series, X3 and other models from 2012-2018. Function is to inject fuel into the cylinder at 12 MPa pressure with precise timing to stabilize air-fuel ratio, avoiding idle roughness or weak acceleration. Replacement installation difficulty is medium; requires removing intake manifold and replacing sealing ring. Use a torque wrench to tighten to standard torque, otherwise high-pressure fuel rail leaks may occur.