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Genuine VW/Audi Direct Injection High Pressure Fuel Pump | 03L130851AX

Audi A3
VW Jetta, Golf, Beetle
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P/N: 03L130851AX Genuine VW/Audi FREE SHIPPING
Cross References:
  • 03L130755A
  • 03L130755R
  • 03L130755RX

The high pressure fuel pump on modern direct injection engines, boosts the pressure of the fuel entering the fuel injectors. It is a mechanical fuel pump mounted to the engine that works in conjunction with the electric fuel pump to increase fuel pressure from 50-80psi to as high as 2000psi so that the fuel is atomised prior to entering the engine for more complete engine combustion that produces:

  • More power
  • Less harmful emissions
  • Greater fuel economy

Like other mechanical fuel pumps, the high pressure fuel pump uses camshaft movement to draw in fuel, pressurize it, then push the fuel into a fuel injector where it is delivered to the engine.

Signs of a Failing High Pressure Fuel Pump

  • Poor performance
  • Increased fuel consumption
  • Engine not starting
  • Vehicle’s check engine light to illuminate
Because the high pressure fuel pump is the secondary, and not the main fuel pump, when it fails your vehicle will likely continue to run. However, your vehicle will greatly lose performance, have increased vehicle emissions, and have very poor fuel economy. In addition, your vehicle's engine management computer may store a fuel pump fault, illuminate the check engine light, and may even enter your vehicle into limp home mode that locks your vehicle into a lower gear and will prevent your vehicle from exceeding 25mph.

Replacing Your Vehicle’s High Pressure Fuel Pump
Your vehicle’s high pressure fuel pump should only be replaced if it has failed. Some high pressure fuel pumps are equipped with pressure sensors that cannot be replaced separately and require replacement of the high pressure fuel pump when the sensor fails.

Located on the fuel injection rail, high pressure fuel pumps are often easy to access and replace. Due to their location, high pressure fuel pumps can usually be replaced within an hour or two. However, due to the high fuel pressure the pump creates, replacing the fuel lines to and from the high pressure fuel pump is highly recommended but can be more difficult to access.

View more Genuine VW/Audi High Pressure Fuel Pumps.

Any Genuine brand part is obtained directly through our vehicle dealership network from your vehicle's manufacturer. This is always your best option for getting the exact same part that is being replaced and will be the latest version design.
Left = Driver side and Right = Passenger side.
All parts are priced individually unless identified as a set or kit. "Per car" notes identify how many of a given part your car has and "Left/Right or Front/Rear" notes means the part fits the left or right side of the car. These parts are still sold individually and you'll need to select the appropriate quantity if you plan to replace more than one of this item.

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What This Genuine VW/Audi Direct Injection High Pressure Fuel Pump Fits?

Application information below is for reference only and should not be used to determine the exact vehicle fitment. Please use the "Make Sure It Fits" vehicle selection box above to determine the exact fitment and review any application notes. If you need any help determining if this part works with your vehicle, please don't hesitate to contact us.

10-13 - A3 TDI
13-14 - Beetle TDI
10-14 - Golf TDI
09-14 - Jetta TDI, TDI CUP Edition, TDI Premium