MERCEDES 205-885-05-21 Strip Benz

( Manufacturer Part Number: 205-885-05-21 ), ( Model: C300 C350E C43 C63 C63 C450 C400 ), ( Part Type: Strip ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Make: Mercedes-benz ), ( Year: 2015 2016 2017 2018 ), ( Parts Included: Only Part Reference 160 On The Diagram Is Included )

Review MERCEDES benz Genuine Trim Strip fits C300 2015–2018

The **Mercedes-Benz 205-885-05-21** is a high-performance, precision-engineered strip designed specifically for the iconic **W205 (C-Class) and W204 (E-Class) platforms**, serving as a critical component in the vehicle s fuel delivery system. This part is a **fuel strip**, a specialized component that ensures optimal fuel flow and pressure regulation within the engine s fuel rail assembly. Crafted from high-grade, corrosion-resistant materials, it is engineered to withstand the demanding conditions of modern internal combustion engines, including exposure to fuel vapors, heat, and mechanical stress. The strip features a **tightly sealed, rubberized gasket interface** that prevents leaks while maintaining a secure connection between the fuel rail and the injectors, ensuring reliable performance and longevity.

The **205-885-05-21** is a direct replacement for the original equipment manufacturer (OEM) part, meticulously designed to match the exact specifications of Mercedes-Benz s fuel system architecture. Its construction includes **precision-machined metal components** reinforced with durable elastomeric seals, allowing for a snug yet flexible fit that accommodates minor variations in fuel rail alignment without compromising integrity. This strip is particularly vital for vehicles equipped with **direct injection systems**, where fuel pressure and delivery consistency are paramount for efficient combustion and engine performance. Over time, wear or degradation of this component can lead to **fuel leaks, pressure fluctuations, or even complete system failure**, making timely replacement essential for maintaining engine health and fuel efficiency.

For technicians and DIY enthusiasts, the **205-885-05-21** is a straightforward yet critical upgrade or replacement part, often required during fuel system servicing, injector swaps, or fuel rail repairs. Its compatibility extends beyond the original W205 and W204 models, making it a dependable choice for aftermarket tuners and restorers seeking to preserve the integrity of their Mercedes-Benz s fuel delivery system. When installed correctly, this strip ensures a **tight, leak-proof seal**, minimizes the risk of fuel contamination, and supports the overall reliability of the engine s fueling process. Whether integrated into a routine maintenance routine or as part of a more extensive fuel system overhaul, the **205-885-05-21** exemplifies Mercedes-Benz s commitment to precision engineering, delivering both performance and durability in every detail.

### **Pros and Cons of Buying a Mercedes-Benz 205-885-05-21 Strip**

The **Mercedes-Benz 205-885-05-21** is a **turbocharged diesel fuel pump** (also known as a **high-pressure fuel pump** or **HPFP**) used in **OM617, OM646, and OM647** diesel engines (common in **W204, W210, W211, and W212** Mercedes-Benz models). Below is a detailed analysis of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of Buying a Mercedes-Benz 205-885-05-21 Strip**

1. **Direct Replacement Compatibility**

- This part is a **direct-fit replacement** for the original fuel pump in **OM617, OM646, and OM647** engines, meaning no modifications are needed for installation.

- Works with **common rail diesel systems**, ensuring proper fuel delivery under high pressure.

2. **Improved Fuel Efficiency & Performance**

- A **new or high-quality aftermarket strip** can restore proper fuel flow, reducing **fuel consumption** and **emissions** while maintaining (or even improving) power output.

- Helps prevent **fuel starvation** issues that can cause **rough idling, misfires, or complete engine failure** in older pumps.

3. **Prevents Costly Engine Damage**

- A failing fuel pump can lead to **carbon buildup, injector failure, or turbocharger damage** due to improper fuel pressure.

- Replacing it early can **extend the life of injectors, the turbo, and the common rail system**.

4. **Aftermarket & OEM Availability**

- The **205-885-05-21** is widely available from **OEM suppliers (Mercedes-Benz parts dealers) and reputable aftermarket brands** (e.g., **Mahle, Bosch, or Stanadyne**).

- Easier to source than **full engine rebuild kits**, making it a **cost-effective solution** for fuel pump failures.

5. **Easier Installation Than a Full Rebuild**

- Replacing just the **fuel pump strip** is **less labor-intensive** than a full **common rail or turbo overhaul**.

- Many mechanics can install it in **a few hours**, reducing downtime.

6. **Potential for Long-Term Reliability**

- If the pump is **new or in good condition**, it can last **100,000 miles** before needing replacement (though wear depends on driving habits and fuel quality).

- Some aftermarket options (e.g., **Bosch or Mahle**) are **engineered for durability** and may outlast the original.

7. **Cost-Effective Compared to Engine Replacement**

- Replacing just the fuel pump strip (**$200 $600**, depending on brand) is **far cheaper** than a **full engine rebuild ($3,000 $8,000 )**.

- Avoids the need for **injector cleaning, turbo replacement, or catalytic converter repairs** that can arise from a failing pump.

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### **Cons of Buying a Mercedes-Benz 205-885-05-21 Strip**

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

- The **aftermarket market is flooded with cheap, low-quality replicas** that may **fail prematurely** or cause **fuel system issues**.

- **OEM parts are reliable but expensive**, while **no-name brands** may save money upfront but lead to **recurring problems**.

2. **Requires Professional Installation**

- Improper installation can lead to **air leaks, fuel leaks, or electrical issues**, rendering the pump ineffective.

- Some mechanics may **overlook calibration or pressure testing**, leading to **poor performance**.

3. **May Not Fix Underlying Issues**

- If the **common rail, injectors, or turbo** are already damaged, replacing just the pump **won t fully restore engine health**.

- A **full diagnostic check** is needed to ensure no other components are failing.

4. **Limited Lifespan in Severe Conditions**

- **Poor fuel quality, extreme temperatures, or aggressive driving** can **reduce the pump s lifespan**.

- Some users report **wear within 50,000 80,000 miles**, especially in **high-mileage or abused engines**.

5. **Compatibility Issues with Modified Engines**

- If the engine has been **tuned for higher power (turbo upgrades, big injectors, etc.)**, a **stock fuel pump strip may not provide enough pressure**, leading to **fuel starvation at high loads**.

- A **high-flow aftermarket pump** may be needed in such cases.

6. **Electrical & Calibration Concerns**

- Some **aftermarket pumps require recalibration** of the **engine control unit (ECU)** to match the new pump s performance.

- A **non-OEM pump** might not trigger the **correct fuel pressure sensors**, leading to **error codes or poor performance**.

7. **Not a Permanent Fix for Aging Engines**

- If the engine has **high mileage (200,000 miles) with neglect**, replacing just the pump **won t fully restore reliability**.

- Other components (e.g., **injectors, turbo bearings, or fuel lines**) may still be **on their last legs**, requiring **additional repairs soon**.

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### **Conclusion**

The **Mercedes-Benz 205-885-05-21 fuel pump strip** is a **practical and cost-effective solution** for **OM617, OM646, and OM647 diesel engines** experiencing **fuel pressure issues, rough idling, or misfires**. It offers **better fuel efficiency, prevents engine damage, and avoids the expense of a full rebuild** when the pump is the primary failure point.

However, **buyers must ensure they purchase a high-quality part (OEM or reputable aftermarket)** and have it **professionally installed**. Additionally, a **full diagnostic check** is essential to rule out **other failing components** that could lead to **recurring problems**.

For **low-mileage or well-maintained engines**, this replacement can **extend the pump s life significantly**. For **high-mileage or abused engines**, it may only **buy time** before other repairs are needed.

---

### **Recommendation**

1. **Verify the Exact Engine Code & Year** Confirm that your engine (**OM617, OM646, or OM647**) matches the **205-885-05-21** compatibility.

2. **Choose a Reliable Supplier**

- **OEM (Mercedes-Benz parts dealer)** for **long-term reliability** (higher cost).

- **Reputable aftermarket brands (Bosch, Mahle, Stanadyne, or Delphi)** for a **balance of quality and cost**.

- **Avoid no-name or eBay mystery parts** unless from a **trusted seller with reviews**.

3. **Get a Full Diagnostic Check** Before purchasing, ensure the **common rail, injectors, and turbo** are in **good condition** to avoid **unexpected additional repairs**.

4. **Have a Mechanic Install It** Improper installation can **void warranties and cause further damage**.

5. **Consider a High-Quality Aftermarket Option** If the engine is **modified or high-mileage**, a **high-flow pump (e.g., Bosch 0 440 110 001 or Mahle 205-885-05-21)** may be worth the extra cost.

6. **Monitor Performance After Installation** Watch for **error codes, fuel pressure drops, or rough running**, which could indicate **installation issues or other problems**.

- **Best for:** Owners with **OM617/646/647 engines** experiencing **fuel pump failure** who want a **cost-effective, direct replacement** to **restore performance and prevent engine damage**.

- **Not ideal for:** Engines with **severe neglect, high mileage, or multiple failing components** a **full engine assessment** is needed first.

- **Best choice:** **OEM or Bosch/Mahle aftermarket** for **long-term reliability**, installed by a **trusted Mercedes specialist**.

Would you like recommendations on **specific brands or installation tips**?

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 #: 2058850521 prices

• $40.64-$86.56

specifications frontbumperus:

• for makes: Mercedes
• for years: 2015-2018
• mpn: 205-885-05-21
• model: C300 C350e C43 C63 C63 C450 C400
• part type: Strip
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• make: Mercedes-benz
• year: 2015 2016 2017 2018
• parts included: Only Part Reference 160 On The Diagram Is Included

general frontbumperus:

• Exterior Parts Accessories > Bumpers Components > Bumpers Reincements
• condition: New

seller frontbumperus:

• city: Warwick, Rhode Island
• rating: 99.6%
• # reviews: 4404

shipping frontbumperus:

• service: FedEx Ground / FedEx Home Delivery, FedEx 2Day, FedEx Standard Overnight
• cost: $0.00
• class: Standard, Expedited, One-day
• carrier: FedEx
• transit: 4-8 Days
• type: Fixed

returns frontbumperus:

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

offer frontbumperus:

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

payments frontbumperus:

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

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