MERCEDES 257-240-03-00 Engine Mount Benz

( Manufacturer Part Number: 257-240-03-00 ), ( Model: CLS450 E450 E400 ), ( Part Type: Engine Mount ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Make: Mercedes-benz ), ( Year: 2018 2019 2020 2021 ), ( Parts Included: Only Part Reference 10 On The Diagram Is Included ), ( Replaces Part Number: 2382401600 )

Review MERCEDES benz Genuine Engine Mount fits CLS450 2018–2021

The **Mercedes-Benz 257-240-03-00 engine mount** is a precision-engineered, high-performance suspension component specifically designed for select models within the Mercedes-Benz M117 and M119 engine families, including the iconic **W123, W124, and W202 series** vehicles. Crafted from durable **high-strength steel**, this mount is engineered to withstand the rigorous demands of daily driving, towing, and high-performance applications, ensuring optimal engine stability, reduced vibration, and enhanced drivability. The **257-240-03-00** is a **rubber-injected metal mount**, featuring a robust **steel reinforcement frame** that distributes engine loads evenly while absorbing shocks and preventing excessive movement, thereby protecting both the engine and drivetrain components from premature wear. Its **precision-molded rubber insert** is formulated to maintain flexibility under extreme temperatures, from freezing winter conditions to scorching summer heat, ensuring consistent performance across all climates. This mount is a **direct-fit replacement**, meticulously designed to match the exact specifications of the original equipment manufacturer (OEM), including proper bolt spacing, mounting points, and alignment, eliminating the need for modifications or adjustments. Whether installed in a **sedan, station wagon, or estate**, this engine mount plays a critical role in maintaining the structural integrity of the powertrain, reducing engine noise, and preventing harmful lateral shifts that could lead to costly damage over time. Ideal for both **restoration projects** and **routine maintenance**, the **Mercedes-Benz 257-240-03-00** is a dependable choice for enthusiasts and mechanics seeking a **long-lasting, high-quality solution** that restores factory-level performance and reliability.

### **Pros and Cons of Buying a Mercedes-Benz 257.240.03.00 Engine Mount**

The **Mercedes-Benz 257.240.03.00** is an engine mount (also known as a **front engine support strut**) used in several models, including the **W203 E-Class (2002 2010)** and **W204 E-Class (2010 2016)**. Below is a detailed analysis of its advantages and disadvantages.

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### **Pros of purchasing a 257.240.03.00 Engine Mount**

1. **OEM Quality and Fit**

- This is a genuine Mercedes-Benz part, meaning it is designed to match the exact specifications of the vehicle s original equipment. It ensures proper alignment, vibration damping, and structural support, reducing the risk of misalignment or premature wear in other components (such as the subframe or engine mounts).

2. **Durability and Longevity**

- Mercedes-Benz engine mounts are built to withstand the stresses of daily driving, including vibrations, road shocks, and temperature fluctuations. A high-quality OEM mount should last the lifespan of the vehicle if properly maintained, though wear can still occur over time.

3. **Compatibility with Aftermarket Upgrades**

- If you plan to modify your vehicle (e.g., performance tuning, suspension upgrades, or exhaust modifications), an OEM engine mount provides a stable baseline. Aftermarket mounts may be necessary for aggressive modifications, but starting with OEM ensures compatibility with stock systems.

4. **Warranty Coverage (If Purchased from Authorized Dealers)**

- When buying directly from a Mercedes-Benz dealership or an authorized distributor, the part may come with a warranty, offering peace of mind against defects. Third-party sellers may not provide this benefit.

5. **Prevents Secondary Damage**

- A failing engine mount can lead to excessive engine movement, causing damage to the **subframe, exhaust manifold, or even the engine itself**. Replacing it proactively can prevent costly repairs down the line.

6. **Easier Installation (Compared to Aftermarket Alternatives)**

- OEM parts are designed to fit seamlessly with the vehicle s existing hardware, reducing the need for additional modifications or adapters. Aftermarket mounts may require extra labor or tools for installation.

7. **Resale Value Protection**

- Maintaining OEM components can help preserve the vehicle s value, especially if you plan to sell it in the future. Buyers often prefer cars with original parts intact.

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### **Cons of purchasing a 257.240.03.00 Engine Mount**

1. **Higher Cost Compared to Aftermarket Options**

- OEM engine mounts are significantly more expensive than aftermarket alternatives. Prices can range from **$150 $300 **, depending on the seller and region, whereas aftermarket mounts may cost **$50 $120**. This can be a major drawback for budget-conscious buyers.

2. **Potential for Counterfeit or Low-Quality Parts**

- When purchasing from non-authorized sources (e.g., eBay, Amazon, or unscrupulous online marketplaces), there is a risk of receiving **counterfeit or substandard parts**. These may fail prematurely or not fit correctly, leading to further issues.

3. **Longer Wait Times for Delivery**

- OEM parts, especially from dealerships, may have **longer lead times** due to inventory constraints. Aftermarket parts are typically available for immediate shipping, which is convenient for DIYers or those without access to a mechanic.

4. **Overkill for Minor Wear**

- If the engine mount is only **slightly worn** (e.g., minor cracking or slight sagging), replacing it with an OEM part may be excessive. In such cases, an aftermarket mount or even a **repair kit** (if available) could be a more cost-effective solution.

5. **Installation Complexity**

- While OEM mounts are designed to fit, replacing them often requires **specialized tools** (e.g., torque wrench, engine hoist, or alignment equipment). If you lack mechanical experience, labor costs at a shop may offset the savings of buying aftermarket.

6. **Environmental and Ethical Concerns**

- OEM parts contribute to **electronic waste** when old parts are discarded. Some buyers prefer aftermarket or refurbished parts to reduce environmental impact, though this is subjective.

7. **Potential for Overengineering**

- For high-mileage or heavily modified vehicles, an OEM mount may not offer the **flexibility or performance benefits** of aftermarket alternatives (e.g., **polyurethane mounts** for better vibration absorption or **stiffer mounts** for performance tuning).

---

### **Conclusion**

The **Mercedes-Benz 257.240.03.00 engine mount** is a **high-quality, reliable choice** for owners who prioritize **fitment, durability, and long-term vehicle integrity**. It is the best option if:

- You want **OEM-level performance** and **warranty protection**.

- Your vehicle is **high-mileage or heavily used**, and you want to prevent secondary damage.

- You are **not on a tight budget** and can justify the higher cost.

- You plan to **keep the vehicle long-term** or sell it with minimal modifications.

However, if you are **budget-conscious, mechanically inclined, or dealing with only minor wear**, an **aftermarket alternative** (from a reputable brand like **Fel-Pro, Eurospec, or Mopar**) may be a more practical choice. Additionally, if you suspect **counterfeit parts** in the aftermarket, purchasing from a **trusted dealer or online retailer with return policies** can mitigate risks.

---

### **Recommendation**

- **Buy from an authorized Mercedes-Benz dealership or a trusted online retailer** (e.g., **Mercedes-Benz Parts Online, RockAuto, or local authorized distributors**).

- **Verify the part number and condition** before purchase to avoid counterfeits.

- **Consider professional installation** if you lack experience, as improper mounting can lead to further issues.

- **Research aftermarket brands** (e.g., **Fel-Pro, Eurospec, or Mopar**) with good reviews for compatibility and durability.

- **Check for refurbished OEM mounts** (sometimes available at a discount from salvage yards or auction sites).

- **Inspect the current mount** if it s only **slightly worn**, a **repair kit or partial replacement** may suffice.

- **Have a mechanic inspect it** before purchasing a replacement. Sometimes, **sealing or minor repairs** can extend its life.

- **Consider a bundle deal** some sellers offer discounts when buying multiple mounts (e.g., front and rear).

- **Aftermarket polyurethane mounts** (e.g., **Eibach, Bilstein, or KW**) may offer better vibration damping or stiffness for tuned engines.

- **Consult with a performance specialist** to ensure the chosen mount complements your modifications.

For **stock or near-stock Mercedes-Benz vehicles**, the **257.240.03.00 OEM mount is the safest and most reliable choice**, especially if you want to maintain resale value and avoid future issues. However, if cost is a concern and the mount is not critically failing, a **high-quality aftermarket alternative** can be a pragmatic substitute. Always **prioritize authenticity and compatibility** to avoid costly mistakes.

Details:

Electrical parts are not returnable. Parts must be resalable and in the original packaging. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer.

part #: 2572400300 prices

• $136.53-$202.82

specifications engimou:

• for makes: Mercedes
• for years: 2018-2021
• mpn: 257-240-03-00
• model: Cls450 E450 E400
• part type: Engine Mount
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• make: Mercedes-benz
• year: 2018 2019 2020 2021
• parts included: Only Part Reference 10 On The Diagram Is Included
• replaces part number: 2382401600

returns engimou:

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

shipping engimou:

• transit: 5-10 Days
• service: FedEx Ground / FedEx Home Delivery, FedEx 2Day, FedEx Standard Overnight
• class: Standard, Expedited, One-day
• carrier: FedEx
• type: Fixed
• cost: $0.00

seller engimou:

• # reviews: 4497
• rating: 99.7%
• city: Warwick, Rhode Island

offer engimou:

• options: Ship-to-home
• quantity: 4
• sold: 0
• started: February 14, 2026
• availability: In Stock

payments engimou:

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

general engimou:

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

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