MERCEDES 140-240-02-17 Engine Mount S600 Benz

( Manufacturer Part Number: 140-240-02-17 ), ( Model: S600 600SEC 600SEL ), ( Part Type: Engine Mount ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Make: Mercedes-benz ), ( Year: 1992 1993 1994 1995 1996 1997 1998 1999 ), ( Parts Included: Only Part Reference 5 On The Diagram Is Included )

Review MERCEDES benz Genuine Engine Mount fits 1992–1999

The **Mercedes-Benz 140-240-02-17 Engine Mount** is a precision-engineered rubber-metal composite suspension component designed exclusively for select models within the Mercedes-Benz lineup, specifically tailored to support the M113, M114, and M115 engine families found in vehicles such as the E-Class (W211, W212), C-Class (W203, W204), and S-Class (W221) series. This mount serves as a critical interface between the engine block and the vehicle s chassis, absorbing vibrations, reducing noise transmission, and maintaining optimal alignment under dynamic driving conditions. Crafted from high-grade synthetic rubber reinforced with durable steel inserts, the mount is engineered to withstand the rigorous demands of daily driving, including high-speed travel, aggressive acceleration, and prolonged exposure to varying temperatures ranging from extreme cold to intense heat without compromising structural integrity or performance. Its robust construction ensures long-lasting durability while minimizing wear on associated components, such as the engine cradle and suspension linkages. The design incorporates a precise mounting geometry, allowing for smooth articulation and flexibility, which is essential for maintaining engine stability during sharp maneuvers or uneven road surfaces. Additionally, the mount s rubber compound is formulated to resist ozone, oil, and environmental degradation, making it ideal for both urban and highway applications. Whether installed in a high-performance application or a daily driver, this engine mount exemplifies Mercedes-Benz s commitment to engineering reliability and comfort, ensuring a seamless driving experience while preserving the vehicle s original performance characteristics.

Buying a **Mercedes-Benz M140, M240, or M246 (previously M240 DE) engine mount** particularly for the 2017 model year and later requires careful consideration due to the part s critical role in engine stability, drivability, and long-term reliability. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.

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### **Pros of Buying a Replacement Engine Mount**

1. **Improved Engine Stability**

Engine mounts (also called motor mounts or subframe mounts) isolate engine vibrations from the chassis, preventing excessive noise, harshness, and potential damage to the drivetrain or suspension. A worn or failed mount can cause rattling, clunking, or even engine movement during acceleration or braking. Replacing it restores proper alignment and damping, leading to a smoother ride and reduced wear on other components.

2. **Prevents Further Damage**

- **Transmission or drivetrain strain** (e.g., clutches, torque converters, or differentials experiencing unnecessary stress).

- **Suspension wear** (e.g., bushings, struts, or control arms accelerating degradation due to misalignment).

- **Exhaust or cooling system damage** (e.g., flexing hoses or brackets leading to leaks).

Replacing the mount proactively avoids costly repairs down the line.

3. **Restores Proper Drivability**

- **Excessive engine movement** (visible or felt during acceleration/deceleration).

- **Unusual noises** (clunking, rattling, or thumping, especially over bumps).

- **Transmission shifts feeling harsh or delayed** (due to misalignment affecting the bellhousing or flywheel).

Replacing the mount often resolves these symptoms, improving overall vehicle performance.

4. **Compatibility with Aftermarket Upgrades**

If you ve installed performance parts (e.g., turbochargers, exhaust systems, or suspension upgrades), a new mount ensures the engine remains properly supported. Some aftermarket mounts are designed to reduce flex or improve stiffness, which can benefit high-performance applications.

5. **Warranty Coverage (If Applicable)**

If the mount fails prematurely due to a manufacturing defect, some OEM or aftermarket brands offer warranties (e.g., **Fel-Pro, Duralast, or OE replacements from reputable sellers**). Checking warranty terms can add peace of mind.

6. **Easier Installation (Modern Designs)**

Later-model Mercedes mounts (especially post-2017) often feature **quick-release or bolt-on designs**, simplifying DIY replacement compared to older models with more complex mounting systems. Some mounts also come with **pre-installed hardware** to streamline the process.

7. **Access to High-Quality Aftermarket Options**

Beyond OEM parts, aftermarket brands like **Fel-Pro, Duralast, or Bilstein** offer mounts with improved materials (e.g., polyurethane or rubber compounds) that may last longer than stock units. Some aftermarket mounts are also **quieter or more durable** under heavy loads.

---

### **Cons of Buying a Replacement Engine Mount**

1. **Cost**

- **OEM (Original Equipment Manufacturer)**: Typically the most expensive, ranging from **$150 $300 per mount** (some models require 2 4 mounts, increasing total cost).

- **Aftermarket**: Generally **30 50% cheaper** ($80 $150 per mount), but quality varies. Budget brands may fail prematurely.

- **Used/Rebuilt**: Can be cheaper but riskier due to unknown wear or improper refurbishment.

- **Labor Costs**: Replacing a mount often requires **raising the vehicle, removing the subframe, or accessing the engine bay**, which can add **$200 $500 in labor** depending on the shop and location.

2. **Complexity of Installation**

- **Subframe removal** (common in M240/M246 applications).

- **Special tools** (e.g., torque wrenches, alignment tools, or engine hoists).

- **Precision alignment** to avoid drivability issues post-installation.

DIYers may struggle without mechanical experience, while shops may charge premium rates for specialized work.

3. **Potential for Recurrence**

If the **entire mount assembly is worn** (e.g., subframe mounts, rear engine mounts, or front strut mounts), replacing just one may not solve the issue. Some models (like the **M246**) have **integrated mounts with the subframe**, meaning a full subframe replacement may be needed if the mount is part of a larger assembly.

4. **Compatibility Issues**

- **Incorrect part numbers** can lead to **poor fitment**, causing rattling or premature failure.

- **Aftermarket mounts** may not match the **stiffness or damping characteristics** of OEM parts, potentially affecting NVH (Noise, Vibration, Harshness) performance.

- **Non-genuine parts** might lack the **same durability** as OEM components, especially under heavy loads (e.g., towing or aggressive driving).

5. **Risk of Overlooking Underlying Issues**

- **Subframe damage** (warping or cracks).

- **Transmission or drivetrain misalignment**.

- **Exhaust or cooling system leaks** caused by flexing mounts.

If these issues aren t addressed, replacing just the mount may provide **temporary relief** but not a permanent fix.

6. **Limited Lifespan of Aftermarket Parts**

While some aftermarket mounts are high-quality, others (especially **cheap polyurethane or rubber mounts**) can **wear out faster** than OEM parts, leading to **recurring costs**. Brands like **Fel-Pro** or **Duralast** are more reliable but still not indestructible.

7. **Potential for Improper Installation**

- **Fail prematurely**.

- **Cause new drivability issues** (e.g., clunking, shifting problems).

- **Void warranty coverage** if using an aftermarket part.

---

### **Conclusion**

Replacing a **Mercedes-Benz M140/M240/M246 engine mount** is a **necessary repair** if the mount is failing, as it directly impacts engine stability, drivability, and long-term reliability. The decision to buy whether OEM or aftermarket depends on **budget, quality expectations, and installation confidence**.

- **If you prioritize longevity and reliability**, **OEM or high-quality aftermarket (Fel-Pro, Duralast, or Bilstein)** is the best choice, despite the higher cost.

- **If you re on a budget**, a **reputable aftermarket mount** (with good reviews) can be a cost-effective alternative, but expect to **monitor it closely** for wear.

- **If you re unsure about installation**, **trust a professional shop** with experience in Mercedes subframe and engine mount work to avoid mistakes.

**Avoid cheap, no-name parts** unless you re prepared for potential failure, as this could lead to **more expensive repairs later**.

---

### **Final Recommendation**

1. **Diagnose Thoroughly**

- Inspecting for **visible cracks, tears, or excessive wear**.

- Testing for **engine movement** (lift the vehicle and wiggle the engine; excessive play indicates a bad mount).

- Checking for **related symptoms** (transmission shifts, exhaust leaks, or suspension noise).

2. **Choose the Right Part**

- **For OEM quality**: Buy from **Mercedes-Benz dealership parts departments** or **authorized distributors** (e.g., **MOPAR, RockAuto, or local Mercedes specialists**).

- **For aftermarket**: Select **Fel-Pro, Duralast, or Bilstein** (avoid unknown brands).

- **Verify part numbers** to ensure compatibility with your **specific model year and engine variant** (e.g., M246 vs. M240).

3. **Plan for Installation**

- If **DIYing**, gather the right tools and follow **step-by-step guides** (e.g., from **Chilton Manuals or YouTube tutorials**).

- **Subframe removal costs** (if applicable).

- **Torque specifications** for bolts.

- **Warranty on labor**.

4. **Consider Bundling Related Repairs**

If the mount failure is part of a **larger issue** (e.g., subframe damage, transmission misalignment), address those simultaneously to **prevent future problems**.

5. **Monitor Post-Installation**

- **New noises** (could indicate improper installation).

- **Recurring symptoms** (may require further diagnosis).

- **Mount wear** (check periodically if using aftermarket

Details:

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

part #: 1402400217 prices

• $294.52-$356.25

specifications engimou:

• for makes: Mercedes
• for years: 1992-1999
• mpn: 140-240-02-17
• model: S600 600sec 600sel
• part type: Engine Mount
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• make: Mercedes-benz
• year: 1992 1993 1994 1995 1996 1997 1998 1999
• parts included: Only Part Reference 5 On The Diagram Is Included

general engimou:

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

seller engimou:

• rating: 99.6%
• # reviews: 1351
• city: San Diego, California

offer engimou:

• started: February 12, 2026
• quantity: 4
• availability: In Stock
• sold: 0
• options: Ship-to-home

returns engimou:

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

shipping engimou:

• cost: $22.55
• service: Standard
• type: Fixed
• class: Standard
• transit: 6-12 Days

payments engimou:

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

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