Delphi HM10046 left direct injection high pressure fuel pump for the 2008-2012 Audi R8 V8 4.2L and other vehicles delivers fuel at high pressure for direct injection. It is a GDi pump built with the latest generation of OE technology.
- Delivers fuel at pressures that range from 2,000 to 2,800 PSI
- Mechanically driven, high-flow pump that builds rail pressure quickly for fast start times
- Fuel delivered directly into the engine combustion chamber, for increased horsepower and fuel economy
Quick facts
- Part: Delphi HM10046 direct injection high pressure fuel pump
- Fits: 2008-2012 Audi R8 V8 4.2L and other vehicles
- Position: Left
- Condition: New
Hard starting, hesitation and low power can all be signs of a weak pump. Before you replace it, rule out the low-pressure fuel supply, the fuel filter and the rail pressure sensor, since a fault in any of them can look just like a failing pump. If the pump is the cause, this one replaces it.
Fits
The 2008-2012 Audi R8 V8 4.2L, the 2009-2012 Audi S5 V8 4.2L and the 2010-2011 Audi A6 Quattro V8 4.2L are among the vehicles this pump fits, and it fits others too. It meets OE specifications. Open the "Vehicles it fits" section to check your exact model and engine. This listing is one pump for the left side; the 2008-2012 Audi R8 V8 4.2L takes one there, and any right-side pump is a separate part.
Specifications
Fit and size
- Position: Left
- Quantity per application: 1
Build and materials
- Type: mechanically driven high pressure direct injection pump
- Fuel pressure: 2,000 to 2,800 PSI
- Condition: New
In the box
One direct injection high pressure fuel pump and one instruction sheet.
Interchange: 079 127 025 AC · 079 127 025 G · 079 127 025 J
4032039 · CHM10046 · 2503065 · HFS853103A · HFS853103B · HFS853103C · HFS853A103 · HPP0005 · FI1505 · GDP609
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
4032039, 079 127 025 AC, 079 127 025 G, 079 127 025 J, CHM10046, 2503065, HFS853103A, HFS853103B, HFS853103C, HFS853A103, HPP0005, FI1505, GDP609
Frequently Asked Questions
Does the Delphi HM10046 fit the 2009-2012 Audi S5 V8 4.2L?
Yes. Delphi HM10046 is listed for the 2009-2012 Audi S5 V8 4.2L as well as the 2008-2012 Audi R8 V8 4.2L. For other models, open the "Vehicles it fits" section.
What comes with the Delphi HM10046 fuel pump?
Delphi HM10046 comes as one direct injection high pressure fuel pump with one instruction sheet.
What pressure does this Delphi direct injection high pressure fuel pump deliver?
It delivers fuel at pressures that range from 2,000 to 2,800 PSI. Being mechanically driven and high-flow, it builds rail pressure quickly for fast start times.
What can a failing direct injection fuel pump feel like while driving?
Long cranking, a stumble under acceleration or a drop in power can be signs of a weak pump. Rail pressure is checked with the engine running, so leave that test to a shop.
Does Delphi HM10046 interchange with 079 127 025 G?
Yes. 079 127 025 G is one of the numbers this left-position pump replaces, and it appears on the Interchange line of this page.
