2007-2008 Audi RS4 Hitachi Water-Cooled Alternator - 190 Amp 079903021H
OEM Part #: 079-903-021-H (079903021H)
Actual photo
The exact part you’ll receive — not a stock photo.
$299.99
Used
Donor2007 Audi RS4 · 4.2L
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Genuine OEM Used
SKU: 713186
Donor Vehicle: 2007 Audi RS4 · 4.2L
3 photos
190 AMP
$299.99
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This used OEM Hitachi water-cooled alternator (079903021H) delivers 190 amps for Audi RS4 models with the 4.2L V8 engine. Designed to cool the regulator and rectifier via engine coolant, it handles high electrical loads without overheating. Common failures include voltage drops, dim headlights, or a battery warning light—often from worn brushes or coolant seepage. This high-output unit supports the RS4’s demanding electronics and start-stop systems.
Specifications
| Fits Vehicle Model | RS4 |
| Fits Vehicle Make | Audi |
| OEM Part No | 079-903-021-H (079903021H) |
| Category | Battery / Charging / Starting |
Compatible Vehicles
Fits 3 vehicle configurations across 1 make, 2007-2008.
Check your specific vehicle before ordering.
This list shows year, make, and model. Some years have multiple trims or
engines that use different parts, and individual listings may have
additional fitment notes (e.g. “with sunroof only”). Review
the full variant list below, or
message us with your VIN
and we’ll confirm the match.
View all 3 vehicle configurations
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2007 | Audi | RS4 | Sedan | 4.2L V8 | |
| 2008 | Audi | RS4 | Convertible | 4.2L V8 | |
| 2008 | Audi | RS4 | Sedan | 4.2L V8 |