MERCEDES BENZ 2212400402 Hybrid Transmission Mount Rear S400-W221 Bracket

( Brand: Mercedes Benz ), ( Manufacturer Part Number: 2212400402 ), ( Part Type: Bracket Transmission Mount ), ( Ipn: S400 W221 ), ( Seller Warranty: 30 Days ), ( Oe/oem Part Number: A2212400402 ), ( Placement On Vehicle: Front, Left, Right, Driver Passenger Side )

Review MERCEDES BENZ Hybrid Transmission Mount Rear Support Bracket fits W221 2010–2013

The **Mercedes-Benz W221 S400 Hybrid Rear Transmission Mount Rear Bracket (Part Number: 2212400402, Fitting Years: 2010 2013)** is a precision-engineered component designed to ensure optimal performance, stability, and longevity of the hybrid powertrain system in the iconic S-Class sedan. This critical bracket serves as a structural anchor within the rear transmission mount assembly, playing a pivotal role in isolating vibrations, absorbing dynamic loads, and maintaining precise alignment between the hybrid transmission and the vehicle s chassis. Crafted from high-grade, durable materials likely reinforced steel or aluminum alloy this bracket is engineered to withstand the rigorous demands of both conventional and electric hybrid driving forces, including the torque fluctuations inherent in the S400 s parallel hybrid system. Its robust construction minimizes wear and tear on surrounding components, such as the transmission housing, subframe, and suspension mounts, thereby reducing the risk of costly failures and ensuring a smoother, quieter ride. The bracket s design incorporates strategic mounting points and rubber or polyurethane bushings to dampen road-induced noise and harshness, contributing to the S400 s legendary refinement. For owners and mechanics seeking to restore or upgrade their W221 S400 s hybrid system, this genuine Mercedes-Benz part is an essential replacement for those experiencing excessive rattles, misalignment, or transmission-related issues, offering a direct fit with no modifications required. Its inclusion in maintenance or repair procedures helps preserve the vehicle s performance, resale value, and the hallmark Mercedes-Benz driving experience.

### **Pros and Cons of buying a Mercedes-Benz W221 S400 Hybrid Rear Transmission Mount Bracket (Part Number: 2212400402, Fits 2010-2013 Models)**

1. **Direct OEM Fitment** This part is an original equipment manufacturer (OEM) component, meaning it is designed specifically for the W221 S400 hybrid model. It ensures proper alignment, functionality, and compatibility with the vehicle s transmission system, reducing the risk of premature wear or failure.

2. **Reliability and Durability** Mercedes-Benz parts are engineered to meet strict quality standards. While aftermarket alternatives may exist, an OEM bracket is less likely to fail prematurely, especially in a hybrid system where transmission mounts endure additional stress from regenerative braking and electric motor assistance.

3. **Prevents Transmission Noise and Vibration** Worn or damaged transmission mounts can lead to rattling, clunking noises, or excessive movement in the transmission housing. Replacing this bracket can eliminate these issues, improving drivability and reducing long-term damage to the transmission or surrounding components.

4. **Supports Hybrid-Specific Requirements** The S400 hybrid s transmission operates differently than a conventional gasoline model due to the electric motor s torque and regenerative braking. A genuine mount ensures the transmission remains stable under these unique loads, which aftermarket parts may not fully address.

5. **Easier Installation and Warranty Coverage** Since this is an OEM part, it may come with documentation or warranties from Mercedes-Benz or authorized dealers, providing peace of mind. Additionally, mechanics familiar with Mercedes-Benz hybrids are more likely to handle OEM parts correctly during installation.

6. **Long-Term Cost Savings** While the upfront cost may be higher than aftermarket alternatives, replacing a faulty mount with an OEM part reduces the likelihood of recurring problems, potentially saving money on repairs down the line.

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1. **Higher Cost** OEM parts are typically more expensive than aftermarket equivalents. The price of this bracket may be significantly higher, which could be a deterrent for budget-conscious buyers or those looking for quick, low-cost fixes.

2. **Limited Availability** Depending on the region, genuine Mercedes-Benz parts may not be as readily available as aftermarket options. Purchasing from authorized dealers or official distributors can sometimes involve longer wait times or higher shipping costs.

3. **Potential Overkill for Minor Issues** If the bracket is only slightly worn or the noise/vibration is not severe, replacing it may be more than necessary. In some cases, a simpler fix (e.g., tightening bolts or adjusting suspension) could resolve the issue without the full replacement cost.

4. **Installation Complexity** The transmission mount bracket is located in a tight, often greasy area under the vehicle. Installation requires mechanical skill, proper tools (e.g., torque wrench, jack stands), and possibly the removal of other components (e.g., underbody shields or exhaust parts). DIYers without experience may struggle, leading to additional labor costs if hiring a professional.

5. **Mixed Quality of Aftermarket Alternatives** While not OEM, some high-quality aftermarket brands (e.g., Mann, Febi Bilstein, or reputable hybrid-specific suppliers) offer durable, compatible replacements at a lower cost. However, there is a risk of purchasing low-quality knockoffs that fail quickly or cause further damage.

6. **Hybrid-Specific Challenges** The hybrid system s complexity means that even OEM parts may require additional attention during installation to ensure compatibility with the electric motor and transmission interface. Improper installation could lead to hybrid-specific issues (e.g., error codes, reduced efficiency).

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Buying the **Mercedes-Benz W221 S400 hybrid rear transmission mount bracket (2212400402)** is the most reliable choice for owners experiencing transmission-related noise, vibration, or instability in their 2010 2013 models. The OEM part guarantees proper fitment, durability, and compatibility with the hybrid system, reducing long-term risks. However, the higher cost and potential installation challenges may make it less appealing for those seeking a quick or low-cost fix.

For owners who prioritize **long-term reliability, warranty coverage, and peace of mind**, the OEM bracket is the best option. If budget is a concern, **high-quality aftermarket alternatives** (from trusted brands) can be a viable compromise, provided they are properly researched and sourced. Always verify the part s authenticity and compatibility before purchasing.

- **If the issue is confirmed to be the rear transmission mount bracket (e.g., rattling, clunking, or excessive movement), proceed with the OEM part** to ensure optimal performance and longevity of the hybrid transmission.

- **If the problem is minor or unclear, consult a Mercedes-Benz specialist** to diagnose whether the bracket is the sole culprit before committing to a replacement.

- **For DIYers**, weigh the installation difficulty against your mechanical experience. If unsure, hire a professional, especially for hybrid vehicles where improper handling can void warranties or cause electrical issues.

- **Consider aftermarket options only if the OEM part is unavailable or prohibitively expensive**, and ensure the supplier has positive reviews and hybrid-specific experience. Avoid generic "universal" mounts that may not account for the S400 s unique torque and regenerative braking dynamics.

Details:

It takes only 5 minutes and totally free. Shipping only within the US States and Territories. The parts are used and expected to have some signs of wear due previous use. Wash hands after Handling.

Came off of 2010 Mercedes S400 Hybrid W221 Color Code C799 - Diamond White. Make sure the provided part numbers and photos match with your old See all photos for the condition. Any known defects are pointed in the photos and items.

The part is used and may show some signs of previous use. Make sure the part number matches your vehicle. Please see all photos prior making the purchase to ensure that condition of item meets your standards. 144 For hybrid model's only.

Larger and heavier items are shipped only to the lower 48 / Continental States. Left Driver Side / Right Passenger. See photos for details to ensure proper fitment your vehicle.

part #: 2212400402 prices

• $31.18-$85.49

specifications engimou:

• for makes: Mercedes
• for years: 2010-2013
• brand: Mercedes Benz
• mpn: 2212400402
• part type: Bracket Transmission Mount
• ipn: S400 W221
• seller warranty: 30 Days
• oe/oem part number: A2212400402
• placement on vehicle: Front, Left, Right, Driver Passenger Side

shipping engimou:

• class: Standard
• service: USPS Ground Advantage
• cost: $6.90
• carrier: USPS
• transit: 3-9 Days
• type: Fixed

returns engimou:

• time: 30 Days
• policy: Returns Accepted
• paid by: Buyer

general engimou:

• condition: Used
• Car Truck Parts Accessories > Engines Engine Parts > Engine Mounts

offer engimou:

• options: Ship-to-home
• started: February 9, 2026
• quantity: 1
• sold: 0
• best offers: True
• availability: In Stock

payments engimou:

• other
• wallet: Google-pay
• credit card: Diners-club

seller engimou:

• rating: 100.0%
• # reviews: 6430
• city: Clearwater, Florida

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