MERCEDES 2182400517 Right Engine Motor Mount 343.MB1H12 Benz

( Manufacturer Part Number: 2182400517 ), ( Conditions Options: Rh Engiine Mount ), ( Genuine Oem: Yes ), ( Ipn: 343.mb1h12 ), ( Make: Mercedes-benz ), ( Descriptionpartcondition: Item Will Show Signs Of Normal, Wear And Use.may Have Scratche ), ( Manufacturer Warranty: 6 Month ), ( Items Included: Engine Mount ), ( Placement On Vehicle: Front, Right ), ( Material: Aluminum, Rubber ), ( Oe/oem Part Number: A2182400517 )

Review MERCEDES benz Right Engine Motor Mount fits CLS550 2012–2018

The **Mercedes-Benz 2182400517 engine motor mount** is a critical, high-performance suspension component designed specifically for the **CLS-Class (W218) models spanning the years 2012 through 2018**, including the **CLS550 AMG and non-AMG variants**. This precision-engineered part serves as the foundational support for the vehicle s **M276 V8 engine**, ensuring optimal alignment, vibration dampening, and structural integrity while maintaining the iconic Mercedes-Benz driving dynamics. Crafted from durable **high-strength rubber and reinforced steel components**, this motor mount is engineered to withstand the rigorous demands of daily driving, high-performance acceleration, and the inherent vibrations generated by the powerful **5.5-liter inline-six (CLS550) or the twin-turbocharged V8 (CLS550 AMG)** engines. The mount s robust design prevents excessive engine movement, reduces noise, vibration, and harshness (NVH), and helps maintain proper engine bay alignment, which is essential for smooth operation of the powertrain and associated drivetrain components. Whether installed in a **luxury-oriented CLS550 or the high-revving, sport-tuned AMG variant**, this motor mount is a vital replacement for worn or failed original equipment parts, ensuring longevity and reliability. Its compatibility with models from **2012 to 2018** makes it a versatile solution for restorers, mechanics, and enthusiasts seeking to restore or upgrade their CLS-Class vehicles while preserving their performance and refinement. Proper installation of this motor mount is recommended by Mercedes-Benz technicians to ensure optimal performance and prevent premature wear on related engine and suspension components.

### **Pros and Cons of Buying a Mercedes-Benz CLS 550 (2012 2018) with the Right Engine Motor Mount Issue**

#### **Overview**

The **Mercedes-Benz CLS 550 (W218)** with the **M276 V8 engine** (4.7L) is a powerful luxury sedan/coupe known for its smooth ride, refined interior, and strong performance. However, like many high-end German vehicles, it has its share of reliability concerns particularly with the **right engine motor mount**. Below is a detailed breakdown of its advantages and drawbacks.

---

### **Pros**

1. **Superior Performance and Power**

- The **M276 V8 engine** produces **425 439 horsepower** (depending on the year) and **429 lb-ft of torque**, delivering strong acceleration and a thrilling driving experience.

- The **7-speed automatic transmission (7G-Tronic)** is smooth and responsive, offering excellent shift quality for a luxury sedan.

- Available **AMG upgrades** (e.g., **CLS 550 AMG**) further enhance performance with quicker shifts and a sportier feel.

2. **Luxury and Comfort**

- The **interior is one of the best in its class**, with high-quality materials, ergonomic seating, and a **quiet cabin** (especially in later models).

- **Adaptive damping suspension** (standard in later years) improves ride comfort on rough roads.

- **Premium audio systems** (Burmester or Bang & Olufsen in higher trims) and **infotainment options** (MBUX in later models) provide a high-end experience.

3. **Reliability of the V8 Engine**

- The **M276 V8 is a robust engine** when properly maintained. It is known for lasting **200,000 miles** if serviced regularly.

- **No major engine failures** are commonly reported (unlike some earlier Mercedes V8s), though **oil consumption** can be an issue in some examples.

4. **Resale Value and Prestige**

- Mercedes-Benz retains strong **resale value**, especially for well-maintained examples.

- The **CLS 550 remains a desirable luxury vehicle**, appealing to buyers who value both performance and prestige.

5. **Safety and Technology**

- **Advanced safety features** (standard in later models) include **pre-collision braking, blind-spot monitoring, and adaptive cruise control**.

- **Comfort and convenience** features like **massage seats, heated/ventilated leather, and a panoramic sunroof** enhance daily usability.

---

### **Cons**

1. **Right Engine Motor Mount Failure (Primary Concern)**

- **Excessive engine vibration** (especially at idle or low speeds).

- **Unusual noises** (clunking, rattling, or knocking) from the engine bay.

- **Potential transmission damage** if the mount fails completely, causing the engine to shift violently.

- **Repair cost**: Replacing the right motor mount typically ranges from **$800 $1,500** (parts labor), depending on the dealer or shop.

- **Prevalence**: This issue is **common across 2012 2018 CLS 550 models**, though some later examples (2017 ) may have slight improvements.

2. **High Maintenance and Repair Costs**

- **German luxury vehicles require premium parts and specialized labor**, making repairs expensive.

- **Oil leaks** (valve cover gasket, oil filter housing gasket).

- **Transmission problems** (7G-Tronic can develop **delayed shifts or rough gear changes** over time).

- **Electrical gremlins** (infotainment glitches, sensor failures).

- **Suspension wear** (struts, bushings, and control arms may need replacement).

3. **Fuel Economy and Running Costs**

- The **V8 engine is thirsty**, averaging **16 18 MPG highway** higher than many modern sedans.

- **High insurance costs** due to the vehicle s value and performance.

- **Tires and fluids** (e.g., synthetic oil, premium transmission fluid) add to ongoing expenses.

4. **Build Quality and Durability Concerns**

- Some owners report **plastic interior components wearing out** (e.g., cup holders, door panels).

- **Rust issues** (especially in snowy/salty climates) can affect lower control arms and wheel wells.

- **Exhaust manifold cracks** (less common but possible) may require costly repairs.

5. **Depreciation and Market Demand**

- While the **CLS 550 holds value better than many luxury cars**, it is **not as sought-after as an AMG model or a newer Mercedes**.

- **Used market competition** means buyers may negotiate hard, reducing potential profit if selling later.

---

### **Key Considerations Before Buying**

1. **Inspect the Right Motor Mount**

- **Always test-drive the vehicle** and listen for **unusual noises** (clunks, rattles) from the engine bay.

- **Check for excessive vibration** at idle this is a **red flag**.

- **Get a pre-purchase inspection (PPI)** from a **Mercedes specialist** to confirm the mount s condition.

- **Ask for maintenance records** if the mount was replaced, note the date and quality of the repair.

2. **Budget for Potential Repairs**

- **Transmission service** ( $500 $800 every 60K 100K miles).

- **Oil changes** (use **Mercedes-approved synthetic oil**).

- **Suspension and brake upgrades** (struts, bushings, rotors).

3. **Consider Alternative Options**

- **Later-model CLS 550 (2018 )** some may have slight improvements.

- **CLS 43 AMG (2015 )** a more refined V8 option with better reliability.

- **Used luxury sedans with fewer issues** (e.g., **BMW 550i, Audi A6 3.0T**).

4. **Negotiate Based on Known Issues**

- If the seller is aware of the **motor mount problem**, use it to **lower the price** by **$1,500 $3,000**.

- **Avoid "as-is" sales** always insist on a **limited warranty or repair agreement**.

---

### **Final Recommendation**

You **find a well-documented example** with a **recently replaced right motor mount** (preferably by a Mercedes dealer).

You **budget for potential repairs** (transmission, suspension, oil leaks) and are prepared for **higher maintenance costs**.

You **prioritize performance and luxury** over long-term reliability and plan to **keep the car for 5 7 years**.

You **get a thorough pre-purchase inspection** and **test-drive thoroughly** to confirm no hidden issues.

The **motor mount is failing or unknown** this is a **major risk** that could lead to **transmission or engine damage**.

You **cannot afford unexpected repairs** this is not a **low-maintenance** luxury car.

You **prefer a more reliable alternative** consider a **BMW 550i, Audi A6 3.0T, or a newer Mercedes** with fewer known issues.

- **Set a strict budget** (including **$2,000 $3,000 for contingencies**).

- **Prioritize models from 2016 2018** they may have slight refinements over earlier years.

- **Buy from a reputable dealer or private seller with full service history**.

- **Be prepared to replace the motor mount within the first 30K 50K miles** if it hasn t been done already.

### **Conclusion**

The **Mercedes-Benz CLS 550 (2012 2018) with the M276 V8 is a fantastic luxury vehicle for those who appreciate its performance and comfort**, but **the right motor mount issue is a significant drawback**. If you **address the mount proactively** and **budget for maintenance**, it can be a **great long-term purchase**. However, if **reliability is a top priority**, consider **alternative luxury sedans** or **newer Mercedes models** with fewer known problems. Always **inspect thoroughly** before buying to avoid costly surprises.

Details:

RH ENGIINE MOUNT. TESTED AND 6 MONTH WARRANTEED. Proof of certification or licensing must be documented and available upon request. Qualifications of Installer: Only a Certified ASE Mechanic or an automotive technician licensed by recognized state national authority may perform the installation.

part #: 2182400517 prices

• $54.00-$157.25

specifications engimou:

• for models: Cls550
• for makes: Mercedes
• for years: 2012-2018
• mpn: 2182400517
• conditions options: Rh Engiine Mount
• genuine oem: Yes
• ipn: 343.mb1h12
• make: Mercedes-benz
• descriptionpartcondition: Item Will Show Signs Of Normal, Wear And Use.may Have Scratche
• manufacturer warranty: 6 Month
• items included: Engine Mount
• placement on vehicle: Front, Right
• material: Aluminum, Rubber
• oe/oem part number: A2182400517

payments engimou:

• credit card: Discover
• wallet: Google-pay
• other

shipping engimou:

• cost: $0.00
• service: Standard
• class: Standard
• type: Fixed
• transit: 5-8 Days

offer engimou:

• availability: In Stock
• started: February 12, 2026
• quantity: 1
• best offers: True
• options: Ship-to-home
• sold: 0

general engimou:

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

returns engimou:

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

seller engimou:

• city: Rancho Cordova, California
• rating: 99.8%
• # reviews: 3689

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