MERCEDES 140-277-09-03 Automatic Transmission Cover Benz

( Manufacturer Part Number: 140-277-09-03 ), ( Part Description: Cover, Transmission Governor ), ( Type: Automatic Transmission Cover ), ( Items Included: As Pictured ), ( Universal Fitment: No ), ( Compatibility: Mbz S124, E320t 92-96 Customer To Verify ), ( Country Of Origin: Germany ), ( California Prop 65 Warning: This Product Contains A Chemical Known To The State Of California To Cause Cancer And Reproductive Harm. )

Review MERCEDES benz Automatic Transmission Cover And fits 320TE E320T

The **Mercedes-Benz 140-277-09-03 Automatic Transmission Cover** is a meticulously engineered, high-quality replacement part designed specifically for the **E320T (W203) generation of Mercedes-Benz vehicles**, including the C-Class, E-Class, and GL-Class models equipped with the **722.6 or 722.6A automatic transmission**. This transmission cover is a critical component of the powertrain system, serving as a protective barrier that shields the internal transmission components from contaminants such as dust, debris, and moisture while also housing the torque converter and fluid reservoir. Crafted from **high-grade, durable materials**, this cover is built to withstand the rigorous demands of daily driving, ensuring long-term reliability and optimal performance.

The **140-277-09-03** is a **direct-fit, OEM-quality replacement**, meaning it is manufactured to match the exact specifications of the original equipment part, including precise dimensions, mounting points, and sealing surfaces. This ensures a seamless installation process, minimizing the risk of leaks or misalignment that could compromise transmission function. The cover features a **robust, gasket-sealed design**, incorporating a **high-temperature-resistant elastomer gasket** that maintains a tight seal under varying thermal conditions, preventing fluid leaks and maintaining proper hydraulic pressure within the transmission. Additionally, the cover is engineered to accommodate the **specific torque converter and fluid capacity** of the 722.6/722.6A transmission, ensuring compatibility with the vehicle s drivetrain system.

For mechanics and DIY enthusiasts alike, this transmission cover is designed with **installation convenience in mind**, featuring clear mounting tabs and alignment guides that simplify the replacement process. Whether replacing a worn or damaged original cover or upgrading during a transmission service, the **140-277-09-03** provides the durability and precision required to restore or maintain peak transmission performance. Its **long-lasting construction** helps extend the lifespan of the transmission by protecting it from external contaminants and internal wear, contributing to smoother gear shifts and improved fuel efficiency. As a **genuine or high-quality aftermarket alternative**, this part is an essential component for anyone seeking to preserve the integrity and functionality of their Mercedes-Benz s automatic transmission system.

### **Pros and Cons of Buying a Replacement Mercedes-Benz Automatic Transmission Cover (Part Number: 140-277-09-03 for E320T/E320 TE)**

1. **Compatibility and Fit** This part is specifically designed for the Mercedes-Benz E320T/E320 TE (W210/W211) models, ensuring a proper fit without modifications. Using an OEM or high-quality aftermarket part reduces the risk of leaks or improper sealing.

2. **Prevents Transmission Fluid Leaks** A worn or damaged transmission cover can lead to fluid leaks, which degrade transmission performance, increase wear, and risk catastrophic failure if left unaddressed. Replacing it proactively maintains fluid integrity.

3. **Improves Cooling Efficiency** The transmission cover helps dissipate heat generated by the automatic transmission. A damaged or improperly sealed cover can impair cooling, leading to overheating and reduced transmission lifespan.

4. **OEM Quality (If Purchased from a Reputable Source)** Original equipment manufacturer (OEM) parts or those from trusted aftermarket suppliers (e.g., ACDelco, Bosch, or Mercedes-approved brands) offer durability and reliability comparable to factory parts.

5. **Prevents Contamination** A cracked or degraded cover allows debris, moisture, or dirt to enter the transmission, accelerating internal wear. Replacing it ensures a clean and sealed environment.

6. **Cost-Effective Maintenance** Replacing the cover is a relatively inexpensive fix compared to transmission repairs or replacements, which can cost thousands of dollars. Early intervention avoids more severe (and costly) issues.

7. **Easy Installation** This part is typically straightforward to replace, requiring basic mechanical skills, standard tools, and access to the transmission. Many owners or mechanics can install it without professional assistance.

8. **Extends Transmission Lifespan** By maintaining proper fluid levels and preventing leaks or contamination, the transmission operates more efficiently, potentially adding years to its service life.

9. **Warranty Coverage (If Applicable)** If purchasing from a dealer or authorized supplier, the part may come with a warranty, providing peace of mind against defects.

10. **Avoids Diagnostic Hassles** A leaking transmission cover can cause false error codes (e.g., low fluid or overheating warnings) that require troubleshooting. Replacing it resolves these symptoms directly.

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1. **Cost (Compared to DIY Parts)** While individual parts are affordable (typically **$50 $150** for OEM or high-quality aftermarket), labor costs if hiring a mechanic can add **$100 $300** depending on location and shop rates.

2. **Potential for Counterfeit Parts** Purchasing from untrusted sellers (e.g., eBay, Amazon, or unknown online marketplaces) risks receiving **fake or low-quality parts** that may not fit properly or fail prematurely. Always buy from authorized dealers, Mercedes-Benz service centers, or reputable aftermarket suppliers.

3. **Additional Wear Indicators** If the transmission cover is leaking due to **aged seals, gaskets, or bolts**, replacing just the cover may not fully resolve the issue. The underlying components (e.g., transmission pan gasket, bolts) may also need attention, adding to costs.

4. **Time-Consuming Installation (For DIYers)** While not overly complex, the process involves draining some transmission fluid, removing bolts, and ensuring proper sealing. Inexperienced hands may struggle with alignment or torque specifications, leading to leaks.

5. **Fluid Change Recommendation** If the transmission cover has been leaking for an extended period, the fluid may be contaminated. A **full fluid flush** (costing **$100 $200**) is often recommended alongside the cover replacement to restore optimal performance.

6. **Risk of Overlooking Other Issues** During inspection, other transmission components (e.g., torque converter, solenoids, or internal wear) might show signs of trouble. Skipping a thorough diagnostic could lead to future problems if these are ignored.

7. **Environmental Factors** Extreme temperatures, road debris, or aggressive driving can accelerate wear on the transmission cover. Even a new cover may degrade faster in harsh conditions, requiring more frequent checks.

8. **Misalignment or Improper Sealing** If not installed correctly, the new cover may not seal properly, leading to **immediate leaks** or **vibration/noise** from improper fitment. This can necessitate re-installation or further adjustments.

9. **Limited Lifespan of Aftermarket Parts** While high-quality aftermarket parts are durable, they may not last as long as OEM components. Inferior gaskets or seals could fail sooner, requiring replacement sooner than expected.

10. **Dealer vs. Independent Shop Costs** Authorized Mercedes-Benz dealerships may charge **higher labor rates** than independent mechanics, increasing the total cost of replacement.

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Replacing the **Mercedes-Benz automatic transmission cover (140-277-09-03)** for your E320T/E320 TE is a **practical and cost-effective preventive maintenance measure** that protects your transmission from leaks, contamination, and overheating. The benefits such as extended transmission life, improved efficiency, and avoidance of costly repairs far outweigh the minor drawbacks, provided the part is sourced responsibly and installed correctly.

The **main risks** stem from purchasing counterfeit parts or overlooking related issues (e.g., gaskets, bolts). However, these can be mitigated by **buying from trusted suppliers** (e.g., RockAuto, Amazon (with verified sellers), or a Mercedes-Benz parts department) and **following proper installation procedures**.

For most owners, this is a **worthwhile DIY project** if comfortable with basic mechanical work, or a **straightforward service call** if outsourcing. The long-term savings and performance benefits make it a **recommended maintenance step** for this model.

---

- **OEM parts** from a Mercedes-Benz dealership.

- **High-quality aftermarket brands** like **Bosch, ACDelco, or Mann-Filter** (available at RockAuto, Amazon (with seller reviews), or local auto parts stores).

- Verify the part number matches **140-277-09-03** and check for authenticity labels.

- **Transmission pan gasket** (replace if cracked or leaking).

- **Bolts** (ensure they re not stripped or corroded).

- **Transmission fluid condition** (replace if dark, burnt, or contaminated).

3. **Follow Proper Installation Steps**

- Drain some fluid to reduce pressure.

- Clean the mating surfaces thoroughly.

- Apply a **high-temperature transmission gasket sealant** (e.g., Permatex 24000) to ensure a leak-proof seal.

- Torque bolts to **specification** (typically **25 30 Nm** for the cover bolts).

- Recheck fluid level after installation.

4. **Consider Professional Help if Unsure** If uncomfortable with transmission work, a **trusted mechanic** (preferably one familiar with Mercedes-Benz models) can install it for a reasonable fee.

- **Leaks** under the vehicle.

- **Unusual noises** (grinding, whining) from the transmission.

- **Error codes** related to fluid pressure or overheating.

By taking these steps, you ll **maximize the lifespan of your transmission** and avoid costly failures down the line. This is a **smart investment** in your vehicle s longevity.

Details:

This is not acceptable. Part Template Mercedes-Benz Automatic Transmission Cover - 140-277-09-03 For 320TE E320T. Part numbers are from the actual packaging and may not have a make/ model reference. Everyone pays the price for this.

All costs have to be included in the delivered price. Please verify with your local dealer before purchasing. This has no negative effect on the parts or their performance. These parts are NOS which is New Part - Old Stock, They may have some minor blemishes and / or discoloration from long-term storage.

part #: 1402770903 prices

• $6.00-$26.92

specifications autotransmissionsgo:

• for models: 320te, E320t
• for makes: Mercedes
• mpn: 140-277-09-03
• part description: Cover, Transmission Governor
• type: Automatic Transmission Cover
• items included: As Pictured
• universal fitment: No
• compatibility: Mbz S124, E320t 92-96 Customer To Verify
• country of origin: Germany
• california prop 65 warning: This Product Contains A Chemical Known To The State Of California To Cause Cancer And Reproductive Harm.

returns autotransmissionsgo:

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

offer autotransmissionsgo:

• started: April 29, 2026
• availability: In Stock
• quantity: 1
• sold: 0
• options: Ship-to-home

payments autotransmissionsgo:

• wallet: Paypal
• credit card: Diners-club
• other

general autotransmissionsgo:

• Car Truck Parts Accessories > Transmission Drivetrain > Automatic Transmission
• condition: New other see details

seller autotransmissionsgo:

• city: Bakersfield, California
• rating: 99.9%
• # reviews: 2388

shipping autotransmissionsgo:

• transit: 3-7 Days
• cost: $9.14
• type: Calculated
• class: Standard, Expedited
• service: USPS Ground Advantage, USPS Priority Mail
• carrier: USPS

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