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  3. MERCEDES 116-090-02-75

MERCEDES 116-090-02-75 Valve Benz

fits make: Mercedes.

116-090-02-75 Mercedes-benz Genuine Valve

( Manufacturer Part Number: 116-090-02-75 ), ( Part Type: Valve ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Genuine Oem: Yes )

Review MERCEDES benz Genuine Valve

The **Mercedes-Benz 116-090-02-75 valve** is a precision-engineered intake valve designed for high-performance applications within the iconic M110 and M111 inline-six engine families, which powered legendary Mercedes-Benz models such as the 300 SEL 6.3, 600 SEL, and the iconic 300 SL "Gullwing" roadster and coupe. Crafted from high-grade **1.25% chromium-silicon steel**, this valve is forged to exacting tolerances, ensuring exceptional durability and resistance to thermal stress, which is critical in high-revving, high-output engines where heat and mechanical strain are constant challenges. The valve s **0.75-inch (19.05 mm) diameter** and **0.25-inch (6.35 mm) stem thickness** strike a balance between airflow efficiency and structural integrity, allowing for optimal combustion chamber performance while maintaining rigidity under extreme loads. The **conical seat face** is meticulously machined to a **60-degree angle**, a standard specification that ensures a tight, consistent seal with the cylinder head, minimizing blow-by and maximizing compression efficiency essential for both street-driven and racing applications. This valve is compatible with **Mercedes-Benz engines featuring the 110-series cylinder heads**, including the **M110 (1968 1972)** and **M111 (1972 1980)** configurations, making it a sought-after replacement part for restorers, tuners, and enthusiasts aiming to preserve or enhance the performance of these historic powerplants. Whether used in a classic restoration project or a modern high-performance rebuild, the **116-090-02-75 valve** exemplifies Mercedes-Benz s commitment to engineering excellence, delivering reliability and performance that aligns with the brand s legendary reputation for precision and power.

### **Pros and Cons of Buying a Mercedes-Benz 116.090.02 (M116 Engine, 2.7L V6, 1997 2001 E-Class, S-Class, or SL-Class)**

The **Mercedes-Benz 116.090.02** refers to the **M116 engine**, a 2.7-liter **V6 inline (V6) engine** produced between **1997 and 2001**. This engine was commonly found in the **E-Class (W210), S-Class (W140), and SL-Class (R230)**. Below is a detailed breakdown of its advantages and disadvantages, followed by a conclusion and recommendation.

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### **Pros of the M116 Engine**

1. **Proven Reliability (For Its Era)**

- The M116 was a well-engineered engine for its time, designed with **aluminum cylinder heads and blocks**, reducing weight while maintaining strength.

- It was **less prone to catastrophic failure** compared to some of its contemporaries (e.g., early turbocharged engines or poorly maintained V8s).

- Many examples with **low mileage (under 100,000 km/60,000 miles)** remain in good condition if properly maintained.

2. **Good Power Output for a Naturally Aspirated Engine**

- Produced **around 170 184 hp (depending on model year and tuning)** decent for a naturally aspirated V6 in the late '90s.

- Paired with **Mercedes 7G or 722.6 automatic transmissions**, it provided smooth power delivery, especially in luxury models like the S-Class.

3. **Durable Valvetrain & Cylinder Head**

- The **hydraulic valve lifters** (no need for regular adjustment) and **solid valve springs** made it relatively low-maintenance compared to some other Mercedes engines of the era.

- The **cylinder head** (with **four valves per cylinder**) was robust, though **timing chain wear** was a known issue in later years.

4. **Luxury & Comfort of the Chassis**

- Found in **E-Class, S-Class, and SL-Class**, this engine was paired with **high-end Mercedes suspension, ride quality, and interior refinements**.

- The **W210 E-Class** (especially the **E320**) and **W140 S-Class** were well-built, comfortable, and still hold value in the used market.

5. **Modding Potential**

- The M116 is a **popular engine for tuning**, with aftermarket support for **intake, exhaust, and ECU remapping** to increase power (commonly **250 300 hp** with minor mods).

- **Forced induction (turbocharging)** is possible but requires careful engineering due to the engine s **naturally aspirated design**.

6. **Lower Running Costs (Compared to V8s or Turbocharged Engines)**

- **No turbo lag** (unlike some later Mercedes engines).

- **Fuel efficiency** was decent for a V6 (around **12 15 L/100km** in automatic models).

- **Less prone to oil consumption** than some V8 engines of the era.

7. **Classic Status & Collectibility**

- The **W210 E-Class and W140 S-Class** are **highly sought-after** in the classic luxury market.

- A well-maintained example can **appreciate in value**, especially if it s a **low-mileage, original-spec model**.

---

### **Cons of the M116 Engine**

1. **Timing Chain & Tensioner Issues**

- One of the **most common failures** is **timing chain stretch or tensioner wear**, leading to **timing issues, misfires, or catastrophic failure if ignored**.

- **Symptoms:** Ticking noise from the timing cover, **check engine light (P0016, P0017, P0021)**, or **rough idle**.

- **Solution:** Requires **chain replacement (every 100,000 150,000 km)** and **tensioner/guide replacement** an **expensive repair ( 800 1,500)** if not done preventatively.

2. **Oil Leaks & Seals**

- **Valve cover gasket leaks** (common in all Mercedes engines).

- **Oil filter housing gasket leaks** (can cause **oil pressure drops**).

- **Rear main seal leaks** (if the engine is **overheated or poorly maintained**).

- **Symptoms:** Oil spots under the car, **burning oil smell**, **low oil pressure**.

3. **Head Gasket Failures (Less Common but Possible)**

- While **not as prone to head gasket failure** as some other Mercedes engines (e.g., M111, M104), **overheating or poor maintenance** can lead to **blown head gaskets**.

- **Symptoms:** White smoke from exhaust, **milky oil**, **coolant in oil**, **overheating**.

4. **Electrical & Sensor Problems**

- **Oxygen sensors, crankshaft position sensors, and camshaft sensors** can fail, triggering **check engine lights**.

- **ECU issues** (especially in later models) may require **reprogramming or replacement**.

- **Starter motor failures** (common in older Mercedes) can be expensive to replace.

5. **Transmission Wear (7G/722.6 Automatic)**

- The **7G transmission (E-Class)** and **722.6 (S-Class/SL-Class)** are **known for wear over time**, especially if **not serviced properly**.

- **Symptoms:** **Delayed shifting, rough gear changes, slipping, or automatic failure**.

- **Solution:** **Fluid changes every 60,000 80,000 km** and **valve body servicing** (if needed).

6. **Fuel System & Injector Issues**

- **Fuel injectors can clog** over time, leading to **rough idling, misfires, or poor acceleration**.

- **Fuel pump failures** (common in older Mercedes) can cause **starting issues**.

- **Symptoms:** **Hard starting, sputtering, check engine light (P0171/P0174 for lean conditions)**.

7. **Rust & Body Corrosion (Especially in Older Models)**

- **W210 E-Class and W140 S-Class** (from the late '90s) can suffer from **underbody rust**, **wheel arch corrosion**, and **roof leaks**.

- **SL-Class (R230)** models had **aluminum bodies**, which were **more resistant to rust** but could develop **electrical corrosion issues**.

8. **High Maintenance Costs Over Time**

- **Mercedes parts and labor are expensive**, especially for **timing chain, transmission, and electrical repairs**.

- **Specialist knowledge** is often required for **ECU tuning, transmission servicing, and engine diagnostics**.

9. **Emissions & Modern Compliance Issues**

- **Older models (pre-2000) may not meet modern emissions standards** in some countries, making **registration or roadworthiness testing difficult**.

- **OBD-II compliance** may require **ECU flashing or modifications** to pass emissions tests.

10. **Depreciation (Compared to Modern Luxury Cars)**

- While **classic Mercedes hold value**, they **depreciate faster than modern luxury vehicles** in terms of **resale value**.

- **Running costs (insurance, repairs, fuel) can be higher** than a modern equivalent (e.g., BMW 5-Series, Audi A6).

---

### **Conclusion**

The **Mercedes-Benz M116 (116.090.02) engine** is a **solid choice for a classic luxury driver** who values **comfort, reliability (for its era), and modding potential**. It is **not as problematic as some of its contemporaries (e.g., early turbocharged engines or V8s with oil consumption issues)**, but it **does require attentive maintenance**, particularly around **timing chains, seals, and transmissions**.

**Best suited for:**

- **Enthusiasts who enjoy classic Mercedes** and are willing to **budget for maintenance**.

- **Those who prioritize comfort and driving experience** over modern fuel efficiency.

- **Owners who plan to keep the car long-term** and **address issues preventatively**.

- **People interested in tuning** (intake, exhaust, ECU remapping).

**Not ideal for:**

- **Budget-conscious buyers** who want **low running costs**.

- **Those who dislike mechanical work** (timing chain, transmission, electrical issues require **experience or specialist help**).

- **People who need a daily driver with minimal maintenance** (modern cars are more convenient).

- **Buyers in regions with strict emissions laws** (may require modifications to pass testing).

---

### **Recommendation

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 #: 1160900275 prices

  • $65.10-$65.87

specifications carfuelinjector:

  • for makes: Mercedes
  • mpn: 116-090-02-75
  • part type: Valve
  • manufacturer warranty: 1 Year
  • fitment type: Direct Replacement
  • genuine oem: Yes

shipping carfuelinjector:

  • type: Fixed
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general carfuelinjector:

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  • Air Fuel Delivery > Fuel Injection Parts > Fuel Injectors

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  • started: June 5, 2026
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for makes: mercedes, part type: valve, manufacturer warranty: 1 year, fitment type: direct replacement, genuine oem: yes,
category: auto parts > air fuel delivery > fuel injection parts > fuel injectors, sku: 16865608485409721,
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