Description
This aftermarket Control Module / Ballast is listed as a replacement for Audi OEM part number 8E0907391B. It is intended for Audi A3, A3 Quattro, A4, A4 Quattro, RS4, S4 models with the original part.
It is not a genuine Audi part. Before ordering a replacement, compare the OEM number on your old part or in your vehicle’s parts catalog with the numbers above, and check the year, trim and engine in the fitment table.
Vehicle fitment
| Vehicle | Years | Trim / engine |
| Audi A3 | 2007–2008 | Base 4 Cyl 2.0 L GAS |
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| Audi A3 Quattro | 2007–2008 | Base 6 Cyl 3.2 L GAS |
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| Audi A4 | 2005–2009 | Base, Cabriolet 4 Cyl 2.0 L GAS, 6 Cyl 3.2 L GAS |
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| Audi A4 Quattro | 2005–2009 | Avant, Base, Cabriolet 4 Cyl 2.0 L GAS, 6 Cyl 3.2 L GAS |
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| Audi RS4 | 2007–2008 | Base, Cabriolet 8 Cyl 4.2 L GAS |
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| Audi S4 | 2005–2009 | Avant, Base, Cabriolet 8 Cyl 4.2 L GAS |
Original fitment notes
A3 2007-2008 Base 4 Cyl 2.0 L GAS; A3 Quattro 2007-2008 Base 6 Cyl 3.2 L GAS; A4 2005-2009 Base, Cabriolet 4 Cyl 2.0 L GAS, 6 Cyl 3.2 L GAS; A4 Quattro 2005-2009 Avant, Base, Cabriolet 4 Cyl 2.0 L GAS, 6 Cyl 3.2 L GAS; RS4 2007-2008 Base, Cabriolet 8 Cyl 4.2 L GAS; S4 2005-2009 Avant, Base, Cabriolet 8 Cyl 4.2 L GAS