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MERCEDES 6170704101 Diesel Bosch Fuel Pump Injection 0403245020 Benz

fits model: W123, 300d, Turbo. make: Mercedes. year: 1982–1985.

6170704101 Mercedes-benz 82-85 W123 300d Turbo Diesel Bosch Fuel Injection Pump Oem Tested Work

( Manufacturer Part Number: 6170704101 ), ( Fuel Type: Diesel ), ( Mounting Style: Bolt-on ), ( Type: Fuel Injector Pump ), ( Ipn: 0403245020 ), ( Oe/oem Part Number: See Pictures ), ( Vintage Part: Yes ), ( Universal Fitment: No ), ( Country Of Origin: Germany )

Review MERCEDES benz Diesel Bosch Fuel Injection Pump Oem Tested Work fits W123 300D TURBO 1982–1985

The **Mercedes-Benz 6170704101 Bosch VE Fuel Injection Pump** is a meticulously engineered component designed exclusively for the iconic **W123 300D Turbo Diesel** models produced between **1982 and 1985**. This high-performance fuel injection system is a cornerstone of the legendary **OM617** inline-six diesel engine, renowned for its reliability, torque, and efficiency in the classic Mercedes-Benz lineup. Crafted by **Bosch**, one of the most respected names in automotive fuel technology, this pump operates with precision to deliver an optimal fuel-air mixture, ensuring smooth power delivery and exceptional engine responsiveness. The **VE (Variable Energy) pump** mechanism allows for dynamic adjustment of fuel pressure based on engine load, enhancing both performance and fuel economy a hallmark of Mercedes-Benz s engineering prowess during this era. Built with robust materials and a durable cast-iron housing, this pump is designed to withstand the demanding conditions of high-pressure fuel delivery, making it a critical part of maintaining the original performance and longevity of the W123 s diesel powerplant. Whether restoring a vintage Mercedes-Benz to its former glory or preserving its classic charm, this fuel injection pump is an essential, high-quality replacement part that ensures the engine runs with the same refined efficiency as when it left the factory. Its compatibility with the **300D Turbo Diesel** equipped with the **OM617** engine makes it a sought-after component for enthusiasts and mechanics alike, bridging the gap between original equipment and modern restoration standards.

### **Pros and Cons of Buying a Mercedes-Benz W123 300D Turbo Diesel (1982 1985, Bosch Fuel Injection Pump, VIN 6170704101)**

#### **Pros:**

1. **Reliability of the W123 Platform**

The W123 is one of Mercedes-Benz s most durable and well-built pre-unification models. With proper maintenance, many examples easily exceed 300,000 miles. The 300D (M116 engine) is a robust diesel, known for its longevity if kept in good condition.

2. **Strong Engine (OM617 Diesel)**

The 3.0L OM617 diesel is a well-regarded engine, especially in its turbocharged form. When properly maintained, it can handle high mileage with minimal issues. The Bosch fuel injection pump (P71) is a reliable system for its era, though it requires periodic attention.

3. **Classic Mercedes-Benz Build Quality**

The W123 was built to last, with solid chassis construction, good suspension, and durable components. Many parts are still available from aftermarket suppliers and Mercedes-Benz itself.

4. **Diesel Fuel Efficiency**

Diesel engines of this era were significantly more fuel-efficient than gasoline counterparts, making the 300D a practical choice for long-distance driving in the 1980s. Even today, it offers better MPG than equivalent gasoline engines.

5. **Classic Mercedes Prestige**

The W123 is a highly sought-after classic, especially in well-maintained condition. Owning one provides a sense of luxury and heritage, with strong resale value for restored examples.

6. **Turbocharging Advantage**

The turbocharged 300D produces around **125 140 hp**, which was strong for its time and allows for decent performance compared to naturally aspirated diesel models.

7. **Availability of Parts**

While some components are rare, the W123 has a strong aftermarket support system. Many parts (engine, suspension, interior) can be sourced from European suppliers or specialty classic car dealers.

---

#### **Cons:**

1. **High Maintenance Requirements**

Diesel engines, especially older ones, demand meticulous maintenance. The Bosch P71 fuel injection pump is prone to wear over time and may require rebuilding or replacement (costly, often $1,500 $3,000). Regular fuel system cleaning and injector servicing are essential.

2. **Turbocharger Reliability Issues**

The turbo on the 300D can fail over time, often due to oil starvation or carbon buildup. A turbo rebuild or replacement is expensive ($1,000 $2,500). Proper oil changes (synthetic recommended) and turbo oil additives can help prolong its life.

3. **Electrical System Challenges**

The W123 s electrical system is outdated by modern standards. Issues like failing alternators, corroded wiring, or weak batteries are common. Restoring electrical components can be labor-intensive.

4. **Suspension and Steering Wear**

The suspension (shock absorbers, bushings, ball joints) and steering components (rack-and-pinion or recirculating ball) often need replacement after 300,000 miles. Rebuilding or replacing these parts can be costly.

5. **Interior Wear and Tear**

The interior (seats, carpets, dashboard plastics) in older examples is likely worn. Reupholstering seats and restoring the interior can be expensive but is often necessary for a comfortable drive.

6. **Emissions and Modern Compliance**

The 300D does not meet modern emissions standards, meaning it cannot be legally driven in many areas without modifications (e.g., catalytic converter deletion, which is illegal in some regions). Some countries allow classic cars to be exempt, but this varies by jurisdiction.

7. **Fuel and Lubricant Availability**

While diesel fuel is widely available, some older lubricants (e.g., specific Mercedes-Benz diesel oil) may be harder to find. Synthetic blends are recommended but may not be identical to original specs.

8. **Rust and Bodywork Issues**

Many W123s suffer from rust, especially in the wheel arches, sills, and floor pans. A thorough inspection is critical bodywork repairs can be extensive and expensive.

9. **Resale Value Depends on Condition**

While well-restored examples hold value, a neglected 300D may depreciate quickly. Buyers should be prepared for either a long-term project car or a fully restored investment piece.

10. **Driving Experience Limitations**

Modern safety features (ABS, airbags, modern suspension tuning) are absent. The driving experience is more "old-school," with less refinement than contemporary Mercedes-Benz models.

---

### **Conclusion:**

The **Mercedes-Benz W123 300D Turbo Diesel (1982 1985)** is a **fantastic classic car** for enthusiasts who appreciate engineering heritage, durability, and diesel efficiency. It is **not** a simple "set-and-forget" vehicle it requires **dedicated maintenance, mechanical knowledge, and a willingness to invest in repairs** to keep it running reliably.

If you are looking for a **project car** with strong potential, a **well-documented example with a service history** is ideal. For a **daily driver**, a **fully restored or recently rebuilt** 300D is preferable, though even then, ongoing maintenance will be necessary.

### **Recommendation:** - **Buy only if:**

- You have **mechanical experience** or access to a trusted mechanic.

- You are prepared for **significant upfront costs** (fuel pump, turbo, suspension, electrical work).

- You plan to **restore or maintain it properly** (budget at least **$10,000 $20,000 ** for a full rebuild).

- You enjoy **classic cars** and don t mind their quirks.

- **Avoid if:**

- You want a **low-maintenance, modern vehicle**.

- You cannot commit to **regular, thorough maintenance**.

- You live in an area with **strict emissions laws** (check local regulations before purchasing).

- You are not willing to **invest time and money** in restoring it to a driveable condition.

**Final Verdict:**

This 300D is a **great choice for a passionate Mercedes-Benz owner** who values **classic engineering and is prepared for the challenges**. However, it is **not a beginner-friendly** or **low-cost** purchase. If you find a **well-maintained example with a clean title and service records**, it can be an **excellent long-term investment** both in terms of driving pleasure and potential appreciation. If the car is **neglected**, proceed with caution and budget accordingly.

Details:

Tested from a running car. This product is an OEM Bosch fuel injection pump for a Mercedes W123 300D Turbo diesel from 1982 -1985. Car ran and drove full part out. Made in Germany, this vintage part is specifically designed for the mentioned vehicle model and fuel type.

Ask info if u need a part I dont have listed. Removed from running driving 1982 Mercedes benz 300D W123 Turbo diesel. No leaks worked great. Please see pictures for the part numbers as there is a few with tags even bosch tag.

part #: 6170704101 prices

  • $299.00-$475.00

specifications carfuelinjector:

  • for models: W123, 300d, Turbo
  • for makes: Mercedes
  • for years: 1982-1985
  • mpn: 6170704101
  • fuel type: Diesel
  • mounting style: Bolt-on
  • type: Fuel Injector Pump
  • ipn: 0403245020
  • oe/oem part number: See Pictures
  • vintage part: Yes
  • universal fitment: No
  • country of origin: Germany

offer carfuelinjector:

  • sold: 0
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  • quantity: 1
  • options: Ship-to-home
  • started: February 7, 2026
  • availability: In Stock

general carfuelinjector:

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

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for models: w123, 300d, turbo, for makes: mercedes, for years: 1982-1985, fuel type: diesel, mounting style: bolt-on, type: fuel injector pump, oe/oem part number: see pictures, vintage part: yes, universal fitment: no, country of origin: germany,
category: auto parts > air fuel delivery > fuel injection parts > fuel injectors, sku: 14583259671075762,
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