MERCEDES 221-240-18-17-64 Front Mount Benz

( Model: SL63 CL63 S63 ), ( Part Type: Mount ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Make: Mercedes-benz ), ( Year: 2008 2009 2010 2011 2012 ), ( Parts Included: Only Part Reference 1 On The Diagram Is Included ), ( UPC: 221240181764 )

Review MERCEDES benz Genuine Front Mount fits SL63 2008–2012

The **Mercedes-Benz 221-240-18-17-64 Front Mount** is a meticulously engineered, high-performance air suspension strut designed for luxury and performance-oriented Mercedes-Benz vehicles, particularly those equipped with the iconic **221/240** series air suspension systems. This front mount strut is a critical component of the vehicle s dynamic suspension architecture, offering a seamless blend of precision engineering, durability, and adaptability to varying road conditions. Crafted from high-grade materials, including a robust **aluminum housing** and a **high-pressure air spring**, this strut is engineered to maintain optimal ride height, damping performance, and load-bearing capacity, ensuring both comfort and handling excellence. The **18-inch** designation refers to the strut s compatibility with vehicles featuring 18-inch wheels, while the **17-64** likely denotes the specific model year range (1997 2004) and internal part numbering for the **W210 (S-Class), W203 (E-Class), and W204 (C-Class)** models, among others, where this strut was originally fitted. Its **front mount** designation indicates it is part of the vehicle s front suspension assembly, working in tandem with the air springs, shock absorbers, and control arms to deliver a refined, responsive ride. Whether navigating city streets, highways, or off-road terrain, this strut is engineered to absorb impacts, stabilize the chassis, and enhance overall vehicle stability, all while contributing to the signature Mercedes-Benz driving experience where luxury meets performance. For enthusiasts seeking to restore or upgrade their vehicle s suspension, this strut represents a premium, factory-replacement solution that upholds the brand s reputation for uncompromising quality and engineering precision.

### **Pros and Cons of Buying a Mercedes-Benz 221/240/18/17/64 Front-Mount Engine**

The Mercedes-Benz 221/240/18/17/64 refers to a series of high-performance, naturally aspirated inline-six engines produced by Mercedes-Benz in the 1960s and early 1970s. These engines were used in iconic models like the **300SEL 6.3 (W116)**, **300SEL 6.8 (W116)**, and **SL 6.3/6.8 (R107/R121)**. Below is a detailed breakdown of their advantages and drawbacks.

---

### **Pros**

1. **Legendary Reputation and Prestige**

These engines are among the most respected in classic car circles, known for their smooth power delivery, luxurious feel, and historical significance. Owning one carries prestige, especially in the collector market.

2. **Exceptional Power-to-Weight Ratio**

The **221 (2.2L, 125 hp)** and **240 (2.4L, 140 hp)** were robust for their time, while the **6.3L (300SEL 6.3)** and **6.8L (300SEL 6.8)** produced **250 280 hp**, making them some of the most powerful naturally aspirated engines of the era. The **170 (1.7L, 100 hp)** was more modest but reliable.

3. **Smooth and Refined Operation**

Mercedes-Benz engines of this era were known for their **polished machining, balanced crankshafts, and refined tuning**, resulting in a **silky-smooth power delivery** with minimal vibration. The **6.3/6.8** engines, in particular, were renowned for their **torquey, linear power bands**.

4. **Durability and Longevity**

With proper maintenance, these engines can last **well over 100,000 miles**, especially the **6.3/6.8** variants, which were built for endurance. Many original examples still run today with minimal modifications.

5. **Classic Mercedes-Benz Craftsmanship**

The **front-mounted inline-sixes** were designed with **precision engineering**, featuring **forged pistons, high-quality bearings, and robust valve trains**. The **6.3/6.8** engines, in particular, used **hemi-head designs** (in later models) for improved airflow.

6. **Modification Potential**

- **High-flow cylinder heads** (for the 6.3/6.8)

- **Ported and polished internals**

- **Upgraded camshafts** (for better low-end torque)

- **Fuel system improvements** (modern fuel injection or high-flow carburetures)

- **Supercharging or turbocharging** (though this requires careful engineering to avoid stressing the original block)

7. **Nostalgia and Collectibility**

Models like the **300SEL 6.3/6.8** and **SL 6.8** are **highly sought-after**, with some achieving **six-figure prices** in excellent condition. Owning one is a **passion project** for many enthusiasts.

8. **Proven Reliability in the Right Hands**

Unlike some modern engines that suffer from **electronic failures or complex turbocharging issues**, these engines **fail mechanically** rather than electronically. This makes them **easier to diagnose and repair** for those with mechanical skills.

---

### **Cons**

1. **High Maintenance Requirements**

- **Regular valve adjustments** (especially on the 6.3/6.8)

- **Timing chain/gear replacement** (every **80,000 100,000 miles**)

- **Rod bearing and main bearing checks** (critical for longevity)

- **Fuel system attention** (carburetors or early fuel injection can develop leaks or clogging)

- **Cooling system vigilance** (overheating can lead to **warped heads or seized pistons**)

2. **Complexity and Specialized Knowledge**

- **Precision machining** (for worn components)

- **Understanding of early fuel injection systems** (e.g., **Bosch D-Jetronic** in the 6.3/6.8)

- **Access to rare parts** (some components are **discontinued** and must be sourced from specialists)

3. **Cost of Restoration and Upkeep**

- **Labor costs** for classic car mechanics can be **high** compared to modern vehicles.

- **Replacement parts** (especially for the **6.3/6.8**) can be **expensive** if not sourced from a specialist.

- **Full restoration** of a **300SEL 6.8** can easily exceed **$50,000 $100,000 **, depending on condition.

4. **Fuel and Emissions Challenges**

- **Carbureted models (221, 240, 170)** may struggle with **modern fuel standards** (higher ethanol content can cause **carburetor icing or fuel system issues**).

- **Fuel-injected models (6.3/6.8)** may require **emissions modifications** if driven on the road (some states have **restrictions on pre-catalytic converters**).

- **Smog checks** can be difficult to pass without **aftermarket solutions**.

5. **Driving Practicality**

- **Poor fuel economy** (especially the **6.3/6.8**, which averages **10 12 MPG**).

- **Heavy weight** (the **6.8L engine alone weighs 500 lbs**, making the car **less nimble**).

- **Limited modern safety features** (no ABS, airbags, or modern electronics).

- **High insurance costs** (classic cars can be **expensive to insure**, especially if modified).

6. **Availability of Parts and Mechanics**

- **Fewer specialists** exist compared to modern vehicles.

- **Some parts are obsolete**, requiring **custom machining or reproduction**.

- **Finding a trusted mechanic** who understands these engines can be **difficult in some regions**.

7. **Potential for Hidden Issues**

- **Water pump failures** (common in older Mercedes-Benz engines).

- **Rod bearing wear** (if the engine was **neglected**).

- **Head gasket leaks** (especially in the **6.3/6.8** if overheated).

- **Transmission issues** (some early **4G/5G transmissions** can be **weak**).

8. **Depreciation Risk**

- While **well-maintained classics appreciate**, a **poorly restored or neglected** example can **lose value quickly**.

- **Modifications (especially aggressive ones)** can **devalue** the car in the collector market.

---

### **Conclusion**

Buying a Mercedes-Benz with one of these front-mounted inline-six engines (particularly the **6.3/6.8**) is a **commitment to a lifestyle** rather than just a car purchase. The **pros** prestige, power, durability, and collectibility make them **exceptional for enthusiasts** who appreciate classic engineering. However, the **cons** high maintenance costs, specialized knowledge required, and practical limitations mean they are **not ideal for casual drivers** or those seeking a **modern, low-maintenance vehicle**.

If you are **passionate about Mercedes-Benz history, willing to invest time and money in maintenance, and enjoy the challenge of restoring a classic**, then one of these engines is a **fantastic choice**. If you prioritize **convenience, fuel efficiency, and modern reliability**, then a **modern performance car** or a **well-restored but less complex classic** may be a better fit.

---

### **Recommendation**

- **Best Choice:** A **fully restored 300SEL 6.8 (W116)** or **SL 6.8 (R121)** in **showroom condition**.

- **Why?** These are **peak examples** of Mercedes-Benz engineering, with **unmatched power and prestige**.

- **Budget Consideration:** Expect to spend **$80,000 $200,000 ** for a **concours-level example**.

- **Best Choice:** A **project 300SEL 6.3 (W116)** or **SL 6.3 (R107)** in **moderate condition**.

- **Why?** These are **more affordable** but still **highly desirable** once restored. The **6.3L engine** is **easier to work on** than the **6.8L** in some ways.

- **Budget Consideration:** **$30,000 $70,000** for a

Details:

Electrical parts are not returnable. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. Parts must be resalable and in the original packaging.

part #: sl63 prices

• $132.75-$175.94

specifications engimou:

• for makes: Mercedes
• for years: 2008-2012
• model: Sl63 Cl63 S63
• part type: Mount
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• make: Mercedes-benz
• year: 2008 2009 2010 2011 2012
• parts included: Only Part Reference 1 On The Diagram Is Included
• upc: 221240181764

offer engimou:

• availability: In Stock
• quantity: 4
• options: Ship-to-home
• sold: 0
• started: February 7, 2026

payments engimou:

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

seller engimou:

• city: Medford, Oregon
• # reviews: 333
• rating: 100.0%

returns engimou:

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

shipping engimou:

• cost: $0.00
• class: Standard, Expedited, One-day
• service: Standard, Expedited, Overnight
• transit: 4-11 Days
• type: Fixed

general engimou:

• Car Truck Parts Accessories > Engines Engine Parts > Engine Mounts
• condition: New

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