MERCEDES A2740301203 Engine Crankshaft Pulley Benz X253 2.0L

( Manufacturer Part Number: A2740301203 ), ( Part Type: Engine Crankshaft ), ( Items Included: Pulley )

Review MERCEDES benz 2.0l Engine Main Crankshaft Pulley Oem fits GLC300 2016–2019

The **Mercedes-Benz A2740301203 Crankshaft Pulley** for the **2016 2019 GL Class (W176) GL 300 X253** with the **2.0L Turbocharged Inline-4 Engine (M254)** is a precision-engineered component designed to ensure optimal performance, reliability, and longevity of the vehicle s powertrain. This high-quality pulley is a critical part of the engine s auxiliary drive system, playing a vital role in synchronizing the crankshaft s rotational motion with other engine accessories, including the timing system, power steering pump, and alternator. Crafted from durable, heat-treated steel, the pulley is engineered to withstand the high torque and rotational forces generated by the M254 engine, which delivers a robust **241 horsepower and 258 lb-ft of torque** ideal for the GL 300 s dynamic yet refined driving experience.

The **A2740301203** is a direct OEM replacement, meticulously designed to match the original equipment specifications in terms of dimensions, mounting points, and balancing characteristics. Its **serrated or ribbed outer surface** ensures a secure fit on the crankshaft, preventing slippage and maintaining precise alignment, while the **integrated vibration dampening features** help reduce engine noise and harshness, contributing to the GL 300 s signature smooth operation. The pulley s **precision-machined hub** is designed to fit seamlessly onto the crankshaft s splined shaft, ensuring a snug, interference-free connection that minimizes wear over time. Additionally, the component is treated with protective coatings to resist corrosion, making it well-suited for both urban and highway driving conditions, where exposure to varying temperatures and road debris can accelerate deterioration in lower-quality aftermarket parts.

For Mercedes-Benz owners seeking **uncompromising quality and performance**, this crankshaft pulley is an essential upgrade or replacement option, particularly for those who prioritize **long-term engine health and efficiency**. Whether installed during routine maintenance, as part of a timing belt service, or to address a worn or damaged original component, the **A2740301203** ensures that the GL 300 s 2.0L engine operates with the same level of precision and reliability as it did when it left the factory. Its compatibility with the **X253 GL 300 s hybrid-like efficiency** thanks to its turbocharged direct-injection system makes it a smart investment for drivers who demand both performance and dependability. By maintaining the integrity of the crankshaft pulley, owners can further extend the lifespan of their engine s auxiliary components, reduce the risk of costly failures, and uphold the GL 300 s reputation for **German engineering excellence**.

### **Pros and Cons of Buying a 2016-2019 Mercedes-Benz GLC 300 (X253) with a 2.0L Engine and Crankshaft Pulley Issue (Part Number A2740301203)**

#### **Pros**

1. **Reliable Engine Platform** The 2.0L inline-4 turbocharged engine (M256) in the GLC 300 is a well-regarded unit, known for its smooth operation and decent power output (245 hp, 273 lb-ft torque). It is less prone to major engine failures compared to some V6 or V8 Mercedes engines, though turbocharged engines require proper maintenance.

2. **Good Fuel Economy** For a luxury SUV, the 2.0L engine offers reasonable fuel efficiency, averaging around **18-22 MPG combined**, depending on driving conditions. This is better than many larger-displacement Mercedes engines.

3. **Modern Infotainment & Comfort** The GLC 300 (X253) features a **MBUX infotainment system** (in later models) with a large touchscreen, Apple CarPlay, and Android Auto. The ride is comfortable, with good isolation from road noise, making it suitable for daily driving.

4. **SUV Practicality** The GLC provides a spacious cabin with three rows of seating (though the third row is tight), a decent cargo area, and a higher ride height than sedans, making it versatile for families or occasional off-road use.

5. **Resale Value** Mercedes-Benz SUVs, especially the GLC, hold their value relatively well compared to some competitors, though not as strongly as premium brands like Lexus or Audi.

6. **Potential for Cost-Effective Repairs** If the crankshaft pulley issue is isolated and not part of a larger problem (e.g., timing chain stretch or oil leaks), replacing it may be a straightforward repair, especially if the engine is otherwise healthy.

7. **Aesthetic Appeal** The GLC has a sleek, modern design that appeals to luxury buyers, and the 2.0L model avoids the bulkier appearance of some V6 or V8 variants.

---

#### **Cons**

1. **Crankshaft Pulley Failure Risk** The **A2740301203 crankshaft pulley** (part of the timing system) is known to fail in some 2.0L M256 engines, often due to **bearing wear or excessive play**. A failing pulley can cause **whining noises, vibrations, or even catastrophic engine damage** if it seizes. This is a **common issue** reported in forums and service records, and replacement costs can range from **$500 $1,200** depending on labor and parts.

2. **Timing Chain Stretch Concerns** The 2.0L engine uses a **timing chain** rather than a belt, which can stretch over time. While less critical than a belt failure (which would bend valves), a stretched chain can lead to **poor performance, misfires, or oil leaks** from the tensioner. Some owners report needing **chain replacements or adjustments** between **80,000 120,000 miles**, adding to maintenance costs.

3. **Oil Consumption Issues** Many 2.0L M256 engines suffer from **oil leaks** (valve cover gasket, oil filter housing gasket, or oil pan gasket) and **excessive oil consumption** (burning oil due to piston rings or valve seals). This can lead to **frequent oil top-ups or major repairs** if ignored.

4. **Electrical & Infotainment Problems** The MBUX system (in later models) has had **software glitches and connectivity issues**, and the **head unit can be finicky**. Some owners report **bluetooth problems, touchscreen lag, or sudden shutdowns**, which can be frustrating.

5. **Higher Maintenance Costs** Mercedes-Benz is known for **expensive parts and labor**. Even routine maintenance (oil changes, brake jobs) can cost **$200 $400**, and major repairs (transmission, suspension) are often **$3,000 **.

6. **Transmission Reliability (If Automatic)** The **7G-Tronic 722.9 automatic transmission** in the GLC 300 is generally reliable but has had **some reports of rough shifting or delayed engagement**, particularly in cold weather. A **transmission fluid flush** is recommended every **60,000 miles** to prevent issues.

7. **Rust & Body Issues** The GLC (especially in colder climates) can develop **rust on the lower body panels, wheel wells, and undercarriage**, which may require repairs if not addressed early.

8. **Depreciation** While the GLC holds value better than some Mercedes, it still **loses 20-25% of its value in the first three years**, making it a less attractive long-term investment compared to more durable brands.

---

### **Key Considerations Before Buying**

1. **Verify the Crankshaft Pulley Condition**

- Ask the seller for **service records** confirming the pulley was replaced or inspected.

- Listen for **whining, rattling, or vibrations** under acceleration these are red flags.

- If the pulley is failing, **budget for a replacement** ( $500 $1,200) before purchasing.

2. **Check for Oil Leaks & Consumption**

- Look for **oil stains under the car** or a **dipstick showing low oil levels**.

- Ask if the engine **burns oil excessively** (requires frequent top-ups).

3. **Inspect the Timing Chain & Tensioner**

- A **timing chain stretch** can cause **rough idling or misfires**. A mechanic should check for **excessive play** or **oil leaks from the tensioner**.

4. **Test the Transmission**

- Shift through gears smoothly **hesitation or jerking** may indicate transmission issues.

- Ensure **no delayed engagement** when starting from a stop.

5. **Review Maintenance History**

- A well-maintained GLC 300 with **regular oil changes, timing chain inspections, and pulley replacements** will be a safer buy.

- Avoid cars with **no service records** or **missed maintenance intervals**.

6. **Consider Alternative Options**

- If the crankshaft pulley is a dealbreaker, look for a **GLC 300 with a V6 engine (M256 V6, 300 hp)**, which is less prone to timing issues but may have higher fuel consumption.

- Alternatively, consider a **used Lexus RX 350 or Audi Q5** for similar luxury with potentially lower maintenance costs.

---

### **Final Recommendation**

The **crankshaft pulley has been recently replaced** (within the last 50,000 miles) and the seller provides proof.

The **engine runs smoothly with no oil leaks or excessive consumption**.

The **timing chain and tensioner are in good condition** (verified by a trusted mechanic).

You are **prepared for potential future issues** (oil leaks, transmission maintenance, infotainment quirks) and can afford **$1,000 $2,000 in repairs over the next 50,000 miles**.

The **crankshaft pulley is failing or unknown** this is a **high-risk, high-cost repair**.

The **engine burns oil excessively** or has **major leaks**.

The **transmission shifts poorly** or has **no service history**.

You are looking for a **long-term, low-maintenance vehicle** consider a more reliable luxury SUV like a Lexus or Audi instead.

- **Get a pre-purchase inspection (PPI) from a Mercedes specialist** ( $150 $250) to confirm the pulley, chain, and overall condition.

- **Negotiate the price downward** if the seller is unwilling to disclose maintenance history or if issues are found.

- **Budget for the crankshaft pulley replacement upfront** if buying used, as this is a **common and costly issue**.

The **2016-2019 GLC 300 (2.0L) can be a solid buy** if the **crankshaft pulley and timing system are in good shape**, but it comes with **higher-than-average maintenance risks** compared to competitors. If you are **willing to monitor and address potential issues proactively**, it can be a **good daily driver** with decent fuel economy and luxury features. However, if the **pully is failing or the engine has other hidden problems**, the **cost of repairs may outweigh the vehicle s value**, making it a less ideal purchase. Always **prioritize a thorough inspection** before committing.

Details:

Still works fine Shipping is to the lower 48 USA only. 2017 GLC 300 crank pulley harmonic balance damper. Does have a tiny chip on the inside you can't really see once installed.

part #: a2740301203 prices

• $244.39-$284.40

specifications cranshafengin:

• for models: Glc300
• for makes: Mercedes
• for years: 2016-2019
• mpn: A2740301203
• part type: Engine Crankshaft
• items included: Pulley

payments cranshafengin:

• other
• credit card: Visa
• wallet: Apple-pay

shipping cranshafengin:

• type: Fixed
• transit: 4-10 Days
• service: Standard
• cost: $10.01
• class: Standard

seller cranshafengin:

• # reviews: 611
• rating: 100.0%
• city: Peoria, Arizona

returns cranshafengin:

• policy: No Returns

offer cranshafengin:

• started: March 9, 2026
• quantity: 1
• sold: 0
• options: Ship-to-home
• availability: In Stock

general cranshafengin:

• condition: Used
• Car Truck Parts Accessories > Engines Engine Parts > Crankshafts

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