MERCEDES 172-240-03-17 Engine Mount Left Driver 904204 O.e.m.

( Manufacturer Part Number: 172-240-03-17 ), ( Type: Engine Mount ), ( Ipn: 904204 ), ( Manufacturer Warranty: 1 Year ), ( Placement On Vehicle: Left )

Review MERCEDES .e.m. Engine Mount Left Driver Side.e.m. Year Warranty fits 2012–2020

The **OEM 904204 Mercedes-Benz Engine Mount (Left, Driver-Side) for Models 2012 2020** is a precision-engineered, high-performance suspension component designed to maintain optimal engine stability, vibration isolation, and alignment within the powertrain system of select Mercedes-Benz vehicles. Crafted from durable, high-grade rubber reinforced with robust steel reinforcement layers, this mount is engineered to withstand the dynamic forces generated by modern internal combustion engines while ensuring smooth operation and longevity. Specifically tailored to fit the driver-side front engine bay of Mercedes-Benz models spanning the years 2012 through 2020, this mount is a direct replacement for the factory-equipped component, guaranteeing seamless integration with the engine block, subframe, and surrounding chassis rails. Its robust construction minimizes engine sway, reduces unwanted noise, vibration, and harshness (NVH), and helps preserve the integrity of the drivetrain by absorbing shocks from road imperfections and engine vibrations. Whether installed in high-performance applications or everyday driving scenarios, this mount ensures reliable performance, contributing to a refined driving experience and preventing premature wear on related components. Built to meet Mercedes-Benz s stringent quality standards, this OEM replacement part is an essential component for maintaining the vehicle s original handling characteristics, safety, and overall mechanical efficiency.

### **Pros and Cons of Buying an OEM Mercedes-Benz Engine Mount (Part Number 904204, Left Driver Side, 2012 2020 Models)**

1. **Exact Fit and Compatibility** OEM parts are designed specifically for your vehicle model, ensuring proper alignment, function, and longevity. This reduces the risk of premature wear or failure due to improper sizing or material differences.

2. **High-Quality Materials** Mercedes-Benz uses durable materials in its engine mounts, including reinforced rubber and steel components, which are built to withstand the stresses of daily driving and engine vibrations.

3. **Warranty Coverage** Purchasing directly from an authorized dealer or a reputable supplier often includes a warranty (typically 1 2 years), providing peace of mind against defects or early failure.

4. **Reliability and Performance** Engine mounts support the engine s weight and absorb vibrations, preventing excessive strain on the drivetrain and suspension. A failing mount can lead to rattling, driveline damage, or even engine detachment replacing it with an OEM part ensures optimal function.

5. **Resale Value Protection** Using genuine parts maintains the vehicle s integrity, which can be important if you plan to sell or trade-in the car in the future.

6. **Easier Installation** OEM parts are designed to work seamlessly with the vehicle s existing components, reducing the need for modifications or additional adjustments during installation.

7. **Long-Term Cost Savings** While OEM parts are more expensive upfront, their durability often means fewer replacements over time compared to aftermarket alternatives that may wear out sooner.

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1. **Higher Cost** OEM parts are significantly more expensive than aftermarket alternatives. The price for a single engine mount (904204) can range from **$150 $300 **, depending on the supplier and region. This can be a substantial investment, especially if multiple mounts need replacement.

2. **Limited Availability** OEM parts may not always be in stock at local dealers, requiring ordering from a distributor, which can delay repairs. Some parts may also become harder to source as older model years phase out of production.

3. **Longer Wait Times** If ordering from an authorized dealer or online supplier, shipping times can extend the downtime for your vehicle, which may be inconvenient for daily drivers.

4. **Potential for Counterfeit Parts** Purchasing from untrusted sellers (e.g., eBay, Craigslist, or uncertified online marketplaces) risks receiving counterfeit or refurbished parts that may not meet OEM standards, leading to premature failure.

5. **Overkill for Minor Issues** If the engine mount is only slightly worn or the failure is isolated (e.g., a single mount rattling but not failing), an OEM replacement might be excessive compared to a budget aftermarket option that could suffice.

6. **Labor Costs** Even with the right part, installation often requires professional labor, especially if the mount is part of a larger suspension or engine bay assembly. Labor fees can add **$100 $300 ** to the total cost, depending on the shop s rates.

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### **Conclusion**

Buying an **OEM Mercedes-Benz engine mount (904204, left driver side, 2012 2020)** is the **best choice for long-term reliability, exact fit, and warranty protection**. It ensures your engine remains properly supported, reduces the risk of drivetrain damage, and maintains the vehicle s performance and resale value. However, the **high upfront cost and potential wait times** make it less ideal for budget-conscious buyers or those dealing with minor issues.

For most Mercedes owners, especially those who prioritize **durability and original equipment standards**, the OEM part is justified. If cost is a major concern, **high-quality aftermarket brands** (e.g., Febi Bilstein, Dorman, or Eurospec) can be a viable alternative, though they may lack warranty coverage and could have slightly shorter lifespans.

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### **Recommendation**

- **If you can afford it and want the best long-term solution**, purchase the **OEM engine mount from an authorized Mercedes-Benz dealer or a trusted online supplier** (e.g., RockAuto, MOPAR, or local parts stores with certification).

- **If budget is a constraint**, opt for a **reputable aftermarket brand** (e.g., Febi Bilstein 14672, Dorman 80400, or Eurospec 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

Details:

We combine shipping. Mercedes 2012 2020 Engine Mount LEFT DRIVER SIDE.E.M. 1 YEAR WARRANTY, Part Fits: Engine Mount, Brand NEW part with full year warranty. DRIVER SIDE, Mercedes part # 172 240 03 17, Made by.E.M.

Part Applications. All parts have 1 year warranty.

specifications engimou:

• for makes: Mercedes
• for years: 2012-2020
• mpn: 172-240-03-17
• type: Engine Mount
• ipn: 904204
• manufacturer warranty: 1 Year
• placement on vehicle: Left

returns engimou:

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

payments engimou:

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

seller engimou:

• rating: 99.6%
• # reviews: 25874
• city: Glendale, California

general engimou:

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

shipping engimou:

• class: Standard
• type: Fixed
• service: Standard
• cost: $0.00
• transit: 5-10 Days

offer engimou:

• started: April 25, 2026
• availability: In Stock
• options: Ship-to-home
• quantity: 3
• sold: 0

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