A-Premium High Pressure Fuel Pump Compatible with Audi A8 Quattro 2011-2012/2014, RS5 2013-2015, 4.2L 6.3L, Replace# 079127025Q, 079127026R

Easy to put on. Did what it suppose to do.

Amazon Confirmed Fit still claims this HPFP fits a 2011 Audi A8 4.2L V8. Technically, it did fit and worked well enough to drive a bit, but it threw constant check-engine lights and "EPC" warnings.Between January and September, the dealer had it in three (3) times, each time they diagnosed it as a fuel pump issue, and each time I told them the fuel pumps were brand new. They even convinced me to buy a 3rd pump, thinking I must have received a bad unit.When the 3rd pump didn't fix the problem (after trying a new O2 sensor/fuel system treatments/camshaft position sensors, etc.) the dealer tested the pumps while driving and determined that the fuel regulators built into these units were undersized. The car was only getting a little over half of the fuel it was demanding. The service advisor said the only option they hadn't tried was replacing the pumps with OEM/Hitachi units and quoted $3,500 for both, or they would sell me the pumps for $1,000 each and I could do the work (again)!The replacements were twice the price of these units but worth every penny because I'm finally CEL-free. These pumps might work on smaller engines but they just couldn't pull their weight on the V8.

Install was easy. Greatly built parts.