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MERCEDES 2740701095 Fuel Rail Line Injectors 151617181920 Benz W205 M274

fits model: C300, E300. make: Mercedes. year: 2015–2023.

2740701095 Mercedes-benz 15-23 W205 C300 E300 M274 Fuel Rail Line With Injectors Oem

( Manufacturer Part Number: 2740701095 ), ( Type: Fuel Injector ), ( Oe/oem Part Number: A2740701095, A2560700187, A2780700687 ), ( Fuel Type: Gasoline ), ( UPC: 151617181920 )

Review MERCEDES benz Fuel Rail Line Injectors Oem fits C300 E300 2015–2023

The **Mercedes-Benz 2740701095 Fuel Rail Line Injectors** for the **W205 C-Class (2015 2023, E300 M274 engine)** represent a critical component in the high-performance fuel delivery system of this sophisticated inline-four turbocharged gasoline engine. Designed to meet the stringent emissions and efficiency standards of modern automotive engineering, these injectors are engineered with precision to deliver an optimal and finely atomized fuel spray directly into the combustion chamber. Crafted from high-grade materials, including durable stainless steel and corrosion-resistant coatings, these injectors ensure long-term reliability even under the demanding conditions of turbocharged operation, where fuel pressure can reach up to **200 bar (2,900 psi)**. The **piezoelectric actuator technology** embedded within these injectors allows for ultra-fast response times, enabling precise fuel metering and stratified combustion for improved performance, reduced emissions, and enhanced fuel economy. Each injector is meticulously calibrated to match the engine s **direct injection system**, ensuring consistent spray patterns and minimal dead zones, which is essential for maintaining optimal power output and reducing carbon buildup on intake valves. Whether replacing worn-out original equipment or upgrading for performance tuning, these injectors are a direct-fit solution that preserves the integrity of the W205 s advanced fuel management system, including compatibility with the **Bosch ME 7.5 or ME 9.7.4 engine control units**. Their seamless integration with the **high-pressure fuel pump (HPFP)** and **common rail system** ensures that the engine operates at peak efficiency, delivering the smooth, responsive power characteristic of the C300 s **367 horsepower and 369 lb-ft of torque** all while adhering to the latest Euro 6 emissions regulations. For technicians and enthusiasts alike, these injectors are a testament to Mercedes-Benz s commitment to balancing performance, durability, and environmental responsibility in its modern powertrains.

### **Pros and Cons of Buying Mercedes-Benz W205 C300 (M274) Fuel Rail Line Injectors (Part Number: 2740701095, 2015 2023 Models)**

#### **Pros**

1. **Improved Engine Performance** New or high-quality injectors can restore proper fuel delivery, leading to better throttle response, smoother power delivery, and reduced hesitation. This is particularly noticeable in engines that have experienced carbon buildup or injector fouling over time.

2. **Enhanced Fuel Efficiency** Clogged or failing injectors can cause uneven fuel distribution, leading to poor combustion and reduced MPG. Replacing them with fresh injectors can help optimize fuel economy, especially if the engine was running rich due to worn components.

3. **Reduced Emissions** Properly functioning injectors ensure accurate fuel metering, which helps the engine meet emissions standards. This can be beneficial if the vehicle is due for an emissions test or if you want to avoid potential failures.

4. **Prevents Further Engine Damage** Fuel injectors that are leaking, clogged, or malfunctioning can lead to carbon buildup on valves, piston damage, or even catalytic converter failure. Replacing them proactively can prevent costly long-term damage.

5. **Compatibility with Upgrades** If you plan to modify your C300 (e.g., turbocharging, forced induction, or tuning), fresh injectors are essential to handle increased fuel demands without risking failure.

6. **Warranty Coverage (If Purchased New)** If buying OEM or high-quality aftermarket injectors from a reputable supplier, some may come with a warranty, providing peace of mind against premature failure.

7. **Better Cold Start Performance** Fouled injectors can struggle to atomize fuel properly in cold conditions, leading to rough starts or stalling. New injectors improve cold-weather reliability.

8. **Potential Resale Value Boost** A well-maintained engine with fresh injectors can make the car more appealing to buyers, potentially increasing its resale value.

---

#### **Cons**

1. **High Upfront Cost** OEM Mercedes-Benz injectors (or high-quality aftermarket equivalents) can be expensive, often costing **$500 $1,200 ** for a full set of four, depending on the supplier. Labor costs for installation (if not DIY) can add another **$300 $600**.

2. **Complex Installation** The W205 C300 s fuel rail and injectors are integrated into the engine s fuel system, requiring careful handling to avoid air leaks, improper seating, or damage to the fuel rail. Improper installation can lead to leaks, misfires, or even engine damage.

3. **Potential for Counterfeit Parts** Buying from untrusted sellers (especially online marketplaces) risks receiving **fake or low-quality injectors** that fail prematurely. Always verify the supplier s reputation and authenticity.

4. **Additional Maintenance Required** Replacing injectors often necessitates related services, such as:

- **Fuel system cleaning** (to remove carbon and deposits).

- **Fuel rail pressure testing** (to ensure proper function).

- **Sensor recalibration** (some ECUs may need a reset).

- **Oxygen sensor checks** (if they were affected by rich/lean conditions).

5. **Mixed Results with Aftermarket Injectors** While some aftermarket brands (e.g., **Denso, Siemens, or Bosch**) are reliable, others may not match OEM performance. Cheaper injectors can lead to **poor atomization, uneven spraying, or early failure**.

6. **Time-Consuming Process** If not experienced, DIY installation can take **4 8 hours**, including draining fuel, removing the intake manifold, and properly sealing the injectors. Professional installation is safer but more costly.

7. **Possible ECU or Sensor Issues** If the engine has been running poorly for an extended period, other components (e.g., **fuel pumps, pressure regulators, or sensors**) may also be failing. Replacing injectors alone may not fully resolve performance issues.

8. **Warranty Void Risk** If the vehicle is under warranty, improper installation or using non-OEM parts may void coverage, leaving you responsible for repairs if issues arise.

---

### **Conclusion**

Replacing the **Mercedes-Benz W205 C300 (M274) fuel rail line injectors (2740701095)** is a **highly beneficial but costly** decision for engines showing signs of injector failure. The **pros outweigh the cons** if:

- The injectors are **visibly clogged, leaking, or misfiring**.

- You plan **long-term ownership** and want to avoid catastrophic engine damage.

- You **prioritize performance, efficiency, and emissions compliance**.

However, if the injectors are **only slightly degraded** or the engine has **other underlying issues**, the cost may not justify the upgrade. In such cases, **fuel system cleaning or diagnostic testing** (e.g., **fuel pressure test, injector current test**) could be a more cost-effective first step.

---

### **Recommendation**

1. **Diagnose First** Before purchasing injectors, confirm their condition with:

- **Visual inspection** (remove injectors to check for carbon buildup, corrosion, or leaks).

- **Injector current test** (measures proper resistance and functionality).

- **Fuel pressure test** (ensures the fuel rail and pump are working correctly).

- **Scan for codes** (e.g., P0171/P0174 for lean conditions, P0172/P0175 for rich conditions).

2. **Choose Quality Parts**

- **OEM (Mercedes-Benz original)** Most reliable but expensive.

- **High-end aftermarket** **Denso, Siemens, or Bosch** (often a better value than OEM).

- **Avoid no-name brands** unless from a trusted supplier.

3. **Professional Installation vs. DIY**

- If comfortable with engine work, **DIY installation is possible** but requires precision.

- For **first-time installers**, a **Mercedes specialist** is recommended to avoid leaks or improper seating.

4. **Consider a Full Fuel System Refresh**

- If replacing injectors, also **clean the fuel rail, replace the fuel filter, and check the fuel pump**.

- A **fuel system flush** (e.g., **Liqui Moly or CRC**) before installation can improve longevity.

5. **Budget Accordingly**

- **Minimum viable cost**: $800 $1,200 (aftermarket injectors labor).

- **Premium option**: $1,500 $2,000 (OEM or top-tier aftermarket diagnostics).

6. **Monitor Post-Installation**

- Watch for **improved throttle response, better idle, and consistent power**.

- If issues persist, **recheck fuel pressure, sensors, and ECU settings**.

### **Final Verdict**

**If your C300 s injectors are confirmed faulty and you want to restore optimal performance, replacing them is a worthwhile investment.** However, **only proceed after thorough diagnostics** to ensure no other components are failing. For best results, **prioritize quality parts and professional installation** if unsure. If the engine is otherwise healthy, the upgrade will **significantly extend its lifespan and driving enjoyment**.

Details:

Item may show light scuffs, scratches or other imperfections as a result of this being used part. Large items include: hood, door shell, fender, engine, transmission, trunk hatch, windshield, bumper, reinforcement clip, sub frame, roof, quarter apron, gas tank, etc. All of the parts are tested either before or after removal from vehicle. Shipping cost or carrier may change, based on final destination.

Please, do not purchase parts just to check and diagnose your vehicles problem. Original Mercedes Parts.: Items are in good working condition.

part #: 2740701095 prices

  • $134.99-$185.00

specifications carfuelinjector:

  • for models: C300, E300
  • for makes: Mercedes
  • for years: 2015-2023
  • mpn: 2740701095
  • type: Fuel Injector
  • oe/oem part number: A2740701095, A2560700187, A2780700687
  • fuel type: Gasoline
  • upc: 151617181920

returns carfuelinjector:

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

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  • rating: 99.8%
  • # reviews: 53065

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general carfuelinjector:

  • Air Fuel Delivery > Fuel Injection Parts > Fuel Injectors
  • condition: Used

offer carfuelinjector:

  • sold: 0
  • started: March 12, 2026
  • availability: In Stock
  • best offers: True
  • options: Ship-to-home
  • quantity: 1

shipping carfuelinjector:

  • carrier: FedEx
  • transit: 2-6 Days
  • type: Fixed
  • class: Standard
  • service: FedEx Ground / FedEx Home Delivery
  • cost: $15.00
for models: c300, e300, for makes: mercedes, for years: 2015-2023, type: fuel injector, oe/oem part number: a2740701095, a2560700187, a2780700687, fuel type: gasoline,
category: auto parts > air fuel delivery > fuel injection parts > fuel injectors, sku: 15233372139537721,
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