MERCEDES 313.FLHC04 Connecting Rod Hfre MBE900 4CYL.

( Model: HFRE-CONV ), ( Part Type: Rod ), ( Conditions Options: M2, T11 ), ( Genuine Oem: Yes ), ( Ipn: 313.flhc04 )

Review MERCEDES 4cyl. Connecting Rod fits R5F 303 2004

The **Mercedes-Benz 313.FLHC04 MBE900 4-cylinder connecting rod (303 R5F)** is a precision-engineered component designed exclusively for the high-performance and reliability-driven needs of the iconic **OM617 3.0L inline-six engine**, specifically tailored to the **R5F chassis** found in select Mercedes-Benz models from the late 1980s and early 1990s. Crafted from **forged 4140 chromium-molybdenum alloy steel**, this connecting rod embodies durability and structural integrity, ensuring it can withstand the extreme stresses of high-revving engines while maintaining optimal strength-to-weight balance. The **hollow design** of the rod reduces mass without compromising rigidity, enhancing engine responsiveness and reducing reciprocating inertia a critical advantage for enthusiasts seeking to maximize power output in their **300E, 500E, or SL600** applications. The **big-end bearing journal** is meticulously machined to exacting tolerances, featuring a **smooth, polished finish** to minimize friction and prevent premature wear, even under aggressive driving conditions or aftermarket modifications. This rod is fully compatible with **MBE900 big-end caps**, ensuring a secure and precise fit that aligns perfectly with the engine s original specifications. Whether used in a **restoration project, high-performance rebuild, or as a replacement for a worn-out original**, this connecting rod delivers the reliability and performance expected from Mercedes-Benz s legendary engineering legacy. Its **OEM-grade construction** ensures compatibility with stock crankshafts and pistons, making it an ideal choice for both purists and performance seekers aiming to preserve or enhance the mechanical integrity of their classic Mercedes engine.

### **Pros and Cons of Buying a Mercedes-Benz 313.FLH.C04 (MBE900, 4-Cylinder, Connecting Rod 303, R5F Engine)**

#### **Overview**

The **Mercedes-Benz 313.FLH.C04** is a compact executive sedan from the **W203 (C-Class) generation**, produced between **2007 and 2014**. It is equipped with a **2.0L inline-4 engine (R5F 303)**, which is a **highly refined but underpowered** unit when compared to its rivals. This model was primarily aimed at the **European market**, where fuel efficiency and reliability were key selling points. Below is a detailed breakdown of its strengths and weaknesses.

---

### **Pros**

1. **Refined and Comfortable Ride**

- The W203 platform is known for its **smooth suspension tuning**, making it one of the most comfortable small executive sedans of its time.

- Excellent **road-holding** and **low noise levels**, especially in the **C220 CDI (diesel) variant**, though the **gasoline 313.FLH** is slightly less refined.

- **Quiet cabin** with good sound insulation, making it pleasant for long drives.

2. **Reliability (Compared to Peers)**

- The **R5F 303 engine** is a **well-built Mercedes unit**, less prone to catastrophic failures compared to some competitors (e.g., early BMW N52 or Audi 1.8T engines).

- **No major known issues** with the **4-cylinder version** (unlike the **V6 models**, which had timing chain and oil consumption problems).

- **Transmission options** (6-speed manual or **7G-Tronic automatic**) are **durable** if maintained properly.

3. **Fuel Efficiency (For Its Class)**

- The **313.FLH (2.0L 4-cylinder)** achieves ** 20-22L/100km (11-12L/100km in diesel variants)**, which was **competitive in Europe** where fuel economy was a priority.

- **Lower running costs** compared to V6 or turbocharged alternatives.

4. **Comfortable Interior**

- **High-quality materials** (for a C-Class) with **soft-touch plastics** and **good ergonomics**.

- **Spacious rear seats** (better than some rivals like the BMW 3 Series).

- **Comfortable seating position** with **good visibility** (though rear visibility is average).

- **Standard features** like **blind-spot monitoring, lane-keeping assist (in later models), and adaptive cruise control** (in higher trims).

5. **Low Maintenance Costs (Compared to V6 Models)**

- **No turbocharger** means **less risk of turbo failure** (a common issue in turbocharged 4-cylinders).

- **Simpler engine** **easier and cheaper repairs** than a V6 or diesel with DPF issues.

- **No known major recalls** for the R5F 303 (unlike some early turbocharged Mercedes engines).

6. **Good Resale Value (For a C-Class)**

- The **W203 holds its value reasonably well**, especially the **diesel variants**, but the **petrol 313.FLH is still a solid buy** if well-maintained.

- **Less depreciated** than some rivals (e.g., early BMW 320i or Audi A4 2.0T).

7. **Safety Features (For Its Era)**

- **Standard ESP, ABS, and multiple airbags**.

- **Later models (post-2010)** came with **pre-collision braking and blind-spot assist**, which were **advanced for the time**.

- **Good crash test ratings** (Euro NCAP).

---

### **Cons**

1. **Underpowered Engine (R5F 303)**

- The **2.0L naturally aspirated 4-cylinder** produces **only 136 hp (100 kW)**, which is **weak for a C-Class**.

- **Poor acceleration** compared to **turbocharged rivals** (e.g., BMW 320i, Audi A4 2.0T, or even the **Mercedes C200 CDI diesel**).

- **Top speed is limited ( 200 km/h)**, and **0-100 km/h takes 11-12 seconds** **slower than most competitors**.

- **No real-world turbo option** (unlike the **C200 CDI**, which is far more capable).

2. **High Cost of Ownership (If Not Maintained Properly)**

- **Mercedes parts and labor are expensive** even for a **4-cylinder model**.

- **Timing belt replacement** (if applicable) can be costly ( 500- 800).

- **Oil changes should be done every 15,000 km** (Mercedes recommends synthetic oil changes more frequently than most manufacturers).

3. **Outdated Tech (Compared to Modern Cars)**

- **Basic infotainment system** (if not upgraded to **MBUX or COMAND APS**).

- **No Apple CarPlay/Android Auto** (unless aftermarket).

- **Manual climate control** (unless in higher trims).

- **No wireless charging or advanced driver aids** (like semi-autonomous driving) unless retrofitted.

4. **Reliability Concerns with Age**

- **Any car over 15 years old** will have **wear and tear issues** **timing belt, water pump, suspension bushings, and electrical faults** are common.

- **Oil leaks** (from valve cover gasket or oil filter housing) can occur if not maintained.

- **Transmission (7G-Tronic)** can develop **rough shifting** if not serviced properly.

5. **Fuel Economy Not as Good as Diesel (But Diesel Has Its Own Issues)**

- While the **petrol version is more efficient than most modern cars**, it **lacks the fuel savings of a diesel** (which is now **banned in many cities** due to emissions regulations).

- **Diesel models (C200 CDI) have DPF and AdBlue issues**, making them **more problematic long-term**.

6. **Build Quality Variability**

- Some **earlier models (pre-2010)** had **lower-quality plastics and fit-and-finish issues**.

- **Later models improved**, but **no car this old will match modern German build standards**.

7. **Limited Practicality**

- **Trunk space is average** ( 400L, similar to a BMW 3 Series).

- **Rear legroom is decent but not exceptional** (better than a BMW 320i but not as spacious as a Volvo S60).

- **No real-world 7-seater option** (unlike some rivals).

8. **Depreciation & Market Demand**

- **Not a highly sought-after model** **diesel variants are more desirable**, but the **petrol 313.FLH is harder to sell** if you decide to upgrade.

- **Insurance costs may be higher** than modern alternatives due to **age and parts availability**.

---

### **Ending Conclusion**

The **Mercedes-Benz 313.FLH.C04 (R5F 303, 4-cylinder)** is a **solid, reliable, and comfortable choice** if you prioritize **refinement, fuel efficiency, and low maintenance costs** over **power and modern tech**. It is **not a performance car**, but it **drives smoothly, handles well, and is more reliable than many of its rivals** from the same era.

- **Daily commuters** who value **comfort and reliability** over speed.

- **Budget-conscious buyers** who can **maintain it properly** (oil changes, timing belt, etc.).

- **Those who prefer Mercedes brand prestige** without the **V6 or diesel complications**.

- **Owners in Europe** where **fuel efficiency was a major factor** in purchasing decisions.

- **Drivers who want power** (this is **not a quick car**).

- **Those who need modern tech** (infotainment, driver aids, connectivity).

- **People who dislike high maintenance costs** (Mercedes parts are expensive).

- **Those in areas with strict emissions regulations** (diesel models are now restricted).

---

### **Recommendation**

You **find a well-maintained example** (service records, no major accidents, **timing belt replaced if applicable**).

You **prioritize comfort and reliability** over performance.

You **can afford Mercedes parts and labor** (or have access to a trusted mechanic).

You **don t mind an older infotainment system** (or are willing to upgrade it).

You **live in a region where fuel efficiency is important** (e.g., Europe).

You **need a fast, modern car** this is **not a performance machine**.

You **can t

Details:

Connecting Rod 303 3 R5F 8190993 Mercedes MBE900 4cyl. Labor and costs associated with part installation are not covered under warranty. Connecting Rod 303 3 R5F 8190993, Donor Vehicle model: HFRE-CONV Year: 2004 Mileage: not available or unknown Stock Number: DKC7 Notes: MBE900,303 R5H,M2,T11 Mercedes MBE900 4cyl.

part #: hfre prices

• $50.00-$71.68

specifications pistonringro:

• for models: R5f, 303
• for makes: Mercedes
• for years: 2004
• model: Hfre-conv
• part type: Rod
• conditions options: M2, T11
• genuine oem: Yes
• ipn: 313.flhc04

payments pistonringro:

• other
• wallet: Google-pay
• credit card: Diners-club

general pistonringro:

• Car Truck Parts Accessories > Engines Engine Parts > Pistons Rings
• condition: Used

shipping pistonringro:

• type: Fixed
• class: Standard
• cost: $0.00
• transit: 2-5 Days
• carrier: FedEx
• service: FedEx Ground / FedEx Home Delivery

returns pistonringro:

• paid by: Seller
• time: 60 Days
• policy: Returns Accepted

seller pistonringro:

• # reviews: 50327
• rating: 99.9%
• city: Spokane, Washington

offer pistonringro:

• started: May 7, 2026
• availability: In Stock
• options: Ship-to-home
• sold: 0
• best offers: True
• quantity: 1

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