Audi Volkswagen Golf Jetta High Pressure Fuel Direct Injection Pump 06H127025N Replacement

High-pressure fuel pump for Audi and Volkswagen four-cylinder engines, OEM 0261520472, mounted on the side of the cylinder head and driven by the camshaft, pressurizes fuel to 100–200 bar to inject into cylinders; central to the direct injection system. Fits EA888 engine family across multiple models. Replacement difficulty medium; 1.5–2 hours. Cold-start difficulties, weak acceleration, MIL on, or rough idle often due to wear of internal pump plunger or seals; replace.