MERCEDES 177-010-87-12 Oil Separator Benz

( Manufacturer Part Number: 177-010-87-12 ), ( Part Type: Oil ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Universal Fitment: Direct Replacement ), ( Parts Included: Only Part Reference 0 On The Diagram Is Included ), ( Replaces Part Number: 1770105003 )

Review MERCEDES benz Genuine Oil Separator

The **Mercedes-Benz 177-010-87-12 Oil Separator** is a precision-engineered component designed exclusively for high-performance diesel engines, ensuring optimal efficiency, longevity, and emissions compliance in Mercedes-Benz vehicles. This high-quality oil separator is a critical part of the engine s exhaust aftertreatment system, specifically integrated into the **Diesel Particulate Filter (DPF)** or **Selective Catalytic Reduction (SCR)** configurations found in modern Euro 5, Euro 6, and later emission-compliant diesel engines. Crafted from durable, heat-resistant materials, including high-grade stainless steel and specialized ceramic or metal-ceramic substrates, this separator is engineered to withstand extreme operating temperatures often exceeding 600 C (1,112 F) without compromising structural integrity or performance.

The primary function of the **177-010-87-12 Oil Separator** is to efficiently capture and remove lubricating oil aerosols from the exhaust stream before they pass through the DPF or SCR system. Over time, oil residues can accumulate in the exhaust aftertreatment components, leading to clogging, reduced catalytic efficiency, and potential system failure. By employing advanced filtration technology such as a **cyclone separator design** or **coalescing media** this component ensures that only minimal amounts of oil particles enter the downstream filtration or catalytic converters, thereby extending the lifespan of these expensive and critical systems. The separator s internal geometry is meticulously calibrated to maximize separation efficiency while minimizing pressure drop, which is essential for maintaining optimal engine performance and fuel economy.

Beyond its functional role, the **177-010-87-12** adheres to the stringent quality and durability standards set by Mercedes-Benz, ensuring compatibility with a range of diesel-powered models, including the **OM646, OM654, OM651, and OM642** engine families, commonly found in vehicles such as the **E-Class, GL-Class, Sprinter, and Actros** series. Its precise fitment is achieved through OEM-grade manufacturing processes, including laser-welded seams, corrosion-resistant coatings, and precise dimensional tolerances to prevent leaks or misalignment. For fleet operators, commercial truck owners, or enthusiasts seeking to restore or upgrade their Mercedes-Benz diesel vehicle, this oil separator is an indispensable part of maintaining compliance with emissions regulations while preserving the engine s health and efficiency.

Installation of the **177-010-87-12** typically requires professional expertise, as it may involve disassembling portions of the exhaust system or aftertreatment components. However, its long-term benefits such as reduced DPF regeneration cycles, improved fuel efficiency, and avoidance of costly catalytic converter damage make it a worthwhile investment for those prioritizing reliability and performance. Whether used in a high-mileage commercial vehicle or a meticulously maintained luxury sedan, this component exemplifies Mercedes-Benz s commitment to engineering solutions that balance cutting-edge technology with uncompromising durability.

**Pros and Cons of buying a Mercedes-Benz 177-010-87-12 Oil Separator**

The **Mercedes-Benz 177-010-87-12** is an oil separator used primarily in the company s turbocharged engines, particularly in models like the **OM642, OM651, and OM654** (common in the E200, E220, E250, and E350 diesel engines). Below is a detailed analysis of its advantages and disadvantages.

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### **Pros**

1. **OEM Quality and Reliability**

The part is manufactured by Mercedes-Benz, ensuring high-quality materials and precise engineering. OEM components are designed to meet the exact specifications of the vehicle s original system, reducing the risk of compatibility issues or premature failure.

2. **Compatibility and Fitment**

This oil separator is specifically engineered for certain Mercedes-Benz diesel engines, meaning it will fit seamlessly without requiring modifications. It is particularly relevant for turbocharged models where oil separation is critical to maintaining turbo efficiency and engine longevity.

3. **Durability and Longevity**

OEM parts are built to last the lifespan of the vehicle under normal operating conditions. The oil separator is exposed to high-pressure oil and turbocharger blow-by, so a robust design minimizes wear and tear over time.

4. **Performance Optimization**

A properly functioning oil separator ensures that oil mist and contaminants are effectively separated from the air entering the turbocharger. This reduces turbo lag, improves efficiency, and protects the turbo from oil fouling, which can lead to costly repairs.

5. **Warranty Coverage**

Purchasing directly from an authorized dealer or a reputable supplier often includes warranty coverage, providing peace of mind in case of defects or premature failure.

6. **Prevents Engine Damage**

In turbocharged engines, oil contamination in the turbocharger can cause catastrophic failure. The oil separator acts as a critical filter, preventing oil from entering the turbo and extending its lifespan.

7. **Ease of Installation**

While installation may require some mechanical skill, the part is designed to be straightforward to replace, especially if the vehicle has been previously serviced. Many mechanics are familiar with this component due to its commonality in certain Mercedes models.

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### **Cons**

1. **High Cost**

As an OEM part, the **Mercedes-Benz 177-010-87-12 oil separator** is significantly more expensive than aftermarket alternatives. Prices can range from **$150 to $300 or more**, depending on the supplier and region. This cost may deter budget-conscious buyers or those who prefer aftermarket solutions.

2. **Limited Availability Outside Dealerships**

While the part is widely available through authorized Mercedes-Benz dealers, some independent mechanics or online marketplaces may not stock it. This can require additional effort to source, especially if the buyer is not near a dealership.

3. **Potential for Counterfeit Parts**

Due to its popularity, there is a risk of purchasing counterfeit or low-quality replicas, particularly when buying from untrusted third-party sellers. Counterfeit parts may fail prematurely or not fit correctly, leading to further damage.

4. **Replacement Frequency**

While the oil separator is durable, it is not a "forever" part. Over time, wear and tear can occur, especially in high-mileage vehicles or those subjected to harsh driving conditions. This means eventual replacement costs must be factored into long-term ownership.

5. **Installation Complexity**

Replacing the oil separator may require disassembling parts of the turbocharger or intake system, which can be time-consuming and technically challenging for inexperienced DIYers. Improper installation could lead to leaks or reduced performance.

6. **Aftermarket Alternatives May Suffice**

For some owners, aftermarket oil separators (e.g., from **Mahle, Mann, or WIX**) offer comparable performance at a lower cost. While not OEM, these parts are often highly rated for reliability and can be a cost-effective alternative if the buyer is confident in the brand.

7. **Depreciation and Resale Value**

If the vehicle is not a high-value classic or collector s item, the cost of OEM parts like this may not significantly impact resale value. However, for performance-focused or high-mileage owners, the investment in quality parts can justify the expense.

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### **Conclusion**

The **Mercedes-Benz 177-010-87-12 oil separator** is a critical and high-quality component for turbocharged diesel engines in certain Mercedes-Benz models. Its primary advantages lie in **reliability, performance optimization, and compatibility**, making it an ideal choice for owners who prioritize longevity and OEM standards. However, the **high cost, potential for counterfeit parts, and complexity of installation** are significant drawbacks that may deter some buyers.

For most Mercedes-Benz owners with turbocharged diesel engines (particularly those with the aforementioned engine codes), the **benefits outweigh the drawbacks**, especially if the vehicle is heavily used or has high mileage. The oil separator s role in protecting the turbocharger and maintaining engine efficiency makes it a worthwhile investment for those who cannot compromise on quality.

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### **Recommendation**

- You own a **Mercedes-Benz diesel model with the OM642, OM651, or OM654 engine** and want the most reliable, long-lasting solution.

- You are comfortable paying a premium for **authentic, warranty-backed parts** and have access to an authorized dealer or trusted supplier.

- You prioritize **performance and turbo protection** over cost savings.

- You are replacing a **failed or worn-out separator** and want to avoid potential compatibility issues with aftermarket parts.

- You are on a **tight budget** and are willing to research reputable brands like **Mahle, Mann, or WIX** for comparable performance at a lower cost.

- You are confident in your **mechanical skills** and can verify the aftermarket part s compatibility through reviews or expert advice.

- The vehicle is **not high-mileage** and you are open to monitoring the separator s condition over time.

- Always purchase from **authorized dealers, reputable online retailers (e.g., Amazon, RockAuto with seller ratings), or trusted mechanics** to avoid counterfeit parts.

- If you have **mechanical experience**, installing the part yourself can save labor costs. However, if the job involves **turbo disassembly or complex wiring**, hiring a professional is advisable to ensure proper sealing and function.

- Always **follow Mercedes-Benz service manuals** or consult a mechanic unfamiliar with the process.

**Final Verdict:** For the average Mercedes-Benz owner with a turbocharged diesel engine, the **177-010-87-12 oil separator is a sound investment** when purchased from a trusted source. Its role in preventing turbo damage and maintaining engine efficiency justifies the cost for those who value long-term reliability. However, those on a budget or with lower-mileage vehicles may explore high-quality aftermarket alternatives after thorough research.

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 #: 1770108712 prices

• $274.29-$296.27

specifications emissyste:

• for makes: Mercedes
• mpn: 177-010-87-12
• part type: Oil
• genuine oem: Yes
• manufacturer warranty: 1 Year
• universal fitment: Direct Replacement
• parts included: Only Part Reference 0 On The Diagram Is Included
• replaces part number: 1770105003

seller emissyste:

• # reviews: 5856
• rating: 99.7%
• city: Warwick, Rhode Island

offer emissyste:

• sold: 0
• availability: In Stock
• started: May 6, 2026
• quantity: 4
• options: Ship-to-home

general emissyste:

• Car Truck Parts Accessories > Exhaust Emission Systems > Other Exhaust Emission Parts
• condition: New

payments emissyste:

• credit card: Discover
• wallet: Paypal
• other

shipping emissyste:

• type: Fixed
• cost: $0.00
• transit: 2-6 Days
• carrier: FedEx
• service: FedEx Ground / FedEx Home Delivery, FedEx 2Day, FedEx Standard Overnight
• class: Standard, Expedited, One-day

returns emissyste:

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

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