Mercedes-Benz R-Class Front Engine Mount Set | OEM A2512404117 (x2)
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Mercedes-Benz R-Class W251 – Front Engine Mount Set (x2)
This listing covers a complete front engine mount replacement set for the Mercedes-Benz R-Class W251 chassis equipped with the 3.0L V6 diesel engine. The set comprises two rubber-metal dampening mounts, each replacing OEM part number A2512404117.
This mount is non-directional for this application — the same part fits both the left and right front positions. It secures the engine to the subframe while isolating drivetrain vibration from the cabin and maintaining correct powertrain alignment under braking and acceleration forces.
When to Replace
- Engine vibration felt through the floor or steering column
- Clunking or knocking from the engine bay during acceleration or at idle
- Engine rock during gear changes or hard braking
- Engine sitting at a visibly uneven angle
- Increased engine noise entering the cabin
Why Replace as a Pair
Both mounts accumulate identical mileage, heat cycles, and load stress. Replacing only one side places unequal load on the fresh mount and compromises engine alignment. A matched set restores correct geometry and even load distribution across the subframe.
Part Numbers & Interchange
| Component | OEM Part Number | Cross-References |
|---|---|---|
| Front Engine Mount (×2) | A2512404117 | 2512404117 · 251-240-41-17 · 251 240 41 17 · 2512402717 |
Vehicle Fitment
| Model | Chassis | Years | Engine |
|---|---|---|---|
| Mercedes-Benz R320 CDI / Bluetec | W251 | 2007–2009 | 3.0L V6 Diesel |
| Mercedes-Benz R350 Bluetec 4Matic | W251 | 2010–2012 | 3.0L V6 Diesel |
Always verify your chassis code, engine variant, and VIN before ordering.
What's Included
- 2× Front Engine Mount – replaces A2512404117
- Transmission mount not included.
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Estimated Delivery Times
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Shipping Rates
International Countries (Except UAE)
For all other destinations, rates are calculated by total order weight (1 kg = 2.205 lb):
| Order Weight | Rate (USD) |
|---|---|
| 0 – 5 kg (0 – 11 lb) | $60.00 |
| 5 – 10 kg (11 – 22 lb) | $85.00 |
| 10 – 15 kg (22 – 33 lb) | $100.00 |
| 15 – 20 kg (33 – 44 lb) | $135.00 |
| 20 – 30 kg (44 – 66 lb) | $175.00 |
| 30 – 40 kg (66 – 88 lb) | $250.00 |
| 40 kg and above (88 lb+) | $325.00 |
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