OVERVIEW
The specified washer for the original engine mounting connection
N-903-152-04 is the Genuine VW/Audi flat washer assigned to the engine mounting assemblies listed below. Its 34 mm outside diameter and 4 mm thickness establish the bearing surface and spacing of the original connection.
Use the complete factory number to identify the correct mounting position. This washer supports the original hardware arrangement; it does not replace an engine mount, bracket, bolt or a complete mounting kit.
Technical details
- Complete factory number: N-903-152-04.
- Factory specification: 10.5 mm inside diameter × 34 mm outside diameter × 4 mm thickness.
- Design: flat engine mounting washer.
- Quantity supplied: one individual washer.
These are nominal component dimensions. The bore, outside diameter and thickness all matter to the original connection. A thinner general-purpose washer or a washer with a smaller bearing face can alter the installed arrangement.
Common reasons to replace
- The original washer is missing during engine mounting service.
- The washer is bent, cupped or otherwise distorted.
- The bearing surface is damaged.
- Corrosion or wear has compromised the washer.
- Incorrect hardware was fitted during a previous repair.
Inspect the mating bracket, bolt and mounting surface for damage. Check the engine mount separately if there is excessive movement or vibration; replacing a washer alone does not diagnose or repair a failed mount.
Vehicle fitment
Match the engine and original mounting location shown in the table. The catalog uses this number at specific positions, so model and year alone do not establish interchangeability throughout the mounting assembly.
| Vehicle | Model years | Engine | Configuration | Application restrictions |
|---|---|---|---|---|
| Audi S8 | 2009 | 5.2L gasoline V10 | D3 sedan; quattro; PR T8E; Original engine mounting assembly | Only the engine mounting position assigned N90315204. Confirm the original washer and attachment. |
| Audi A8 L | 2009 | 6.0L gasoline W12 | D3 long-wheelbase sedan; quattro; PR T1H; Original engine mounting assembly | Only the engine mounting position assigned N90315204. Confirm the original washer and attachment. |
Installation guidance
Support the engine as required by the factory service procedure before disturbing a mounting connection. Restore the original washer orientation and hardware stack. Follow the specified bolt replacement requirements and connection-specific tightening sequence.
Confirm the mounting components are seated correctly and all disturbed connections have been secured according to the vehicle-specific procedure.
Ordering information
One genuine washer is supplied. Engine mounts, brackets, bolts and additional washers are sold separately. Confirm the original part number and required quantity before ordering.