fits model: B250, Cla250, Gla250, Qx30, Turbo. make: Mercedes. year: 2013–2020.

( Manufacturer Part Number: 2700103002 ), ( Type: Cylinder Head ), ( Items Included: Cams ), ( Material: Aluminum ), ( Vintage Part: No ), ( Donor Year: 2016 ), ( Miles: 36000 ), ( Oe/oem Part Number: R270016, A2700102502 ), ( Donor Model: Gla-class ), ( Country Of Origin: Germany )
The **Mercedes-Benz 2700103002 cylinder head** is a precision-engineered component designed exclusively for the **2.0L turbocharged inline-four engine** found in a range of Mercedes-Benz models spanning the **2013 to 2020 model years**, including the **CLA 250 (C204), CLA 250 BlueTEC (C204), GLA 250 (X204), GLA 250 BlueTEC (X204), and the Infinity QX30 (QX30, based on the same platform)**. This high-performance cylinder head is a critical part of the **OM651 engine family**, which powers these vehicles with a blend of efficiency, responsiveness, and reliability. Crafted from **high-grade aluminum alloy**, the cylinder head is engineered to withstand the intense thermal and mechanical stresses of turbocharged operation while maintaining optimal combustion efficiency. Its **four-valve per cylinder design** ensures precise air-fuel mixture control, enhancing both power output and fuel economy. The head features **integrated intake and exhaust ports**, optimized for airflow dynamics to maximize turbocharged performance, and is equipped with **hydraulic valve lifters** for smooth operation and reduced wear. Additionally, the cylinder head incorporates **advanced cooling channels** to dissipate heat effectively, preventing overheating and ensuring longevity. This component is compatible with **direct injection systems**, allowing for improved fuel efficiency and reduced emissions, aligning with modern automotive regulations. Whether replacing a worn or damaged head or upgrading for enhanced performance, this cylinder head is a **direct-fit, OEM-quality replacement** that maintains the integrity of the original engine s design while delivering the durability and performance expected from Mercedes-Benz. Its compatibility with both **gasoline and BlueTEC diesel variants** (where applicable) makes it a versatile choice for restorers, mechanics, and enthusiasts seeking to restore or upgrade their vehicles to factory specifications.
### **Pros and Cons of Buying a 2013 2020 Mercedes-Benz 2.0L Turbo (CLA 250, CLA250, GLA 250, Infinity QX30) with the Cylinder Head (Part #2700103002)**
#### **Pros**
1. **Reliability of the 2.0L Turbo Engine**
- The M276 engine (used in these models) is a robust inline-four turbocharged unit with direct injection, offering strong performance (250 265 hp) and decent fuel efficiency (around 20 25 MPG combined).
- When properly maintained, it can last well beyond 200,000 miles, especially if the turbo and oil system are kept in good condition.
2. **Commonality Across Multiple Models**
- The same engine and cylinder head are used in the **Mercedes-Benz CLA 250 (2013 2020), CLA250 (2016 2020), GLA 250 (2015 2020), and the Infinity QX30 (2013 2020)**. This means parts, labor, and expertise are widely available.
3. **Aftermarket and DIY-Friendly**
- The engine is well-documented, and aftermarket support (e.g., turbo upgrades, ECU tuning) is strong. Many mechanics and tuners are familiar with its quirks.
- Common issues (like oil leaks or turbo failures) have known fixes, making repairs more straightforward for experienced owners.
4. **Potential for Performance Upgrades**
- The turbocharged 2.0L can be pushed further with tuning (e.g., **MHD, JB4, or custom ECU flashing**), improving power while maintaining reliability if done correctly.
- Upgrading the turbo, intercooler, and exhaust can enhance performance without excessive strain on the engine.
5. **Affordable Used Market**
- These models are often priced lower than luxury sedans with V6 or V8 engines, making them a budget-friendly way to get a turbocharged Mercedes or Infinity.
- The **CLA 250 and GLA 250** are particularly good values compared to their V6 counterparts.
6. **Modern Tech and Comfort**
- The CLA and GLA platforms feature **Mercedes MBUX infotainment (in later models), adaptive damping, and advanced driver aids**, which are still relevant today.
- The **Infinity QX30** offers a more SUV-like stance and practicality, appealing to those who want a luxury crossover.
7. **Potential for Long-Term Ownership**
- If maintained properly (oil changes every 5,000 7,500 miles, turbo inspections, and timely repairs), this engine can easily reach **300,000 miles** with minimal issues.
- The **CLA and GLA** have strong resale values compared to some other luxury compacts.
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#### **Cons**
1. **Oil Leaks and Consumption**
- The **M276 engine is notorious for oil leaks**, particularly from:- **Valvetronic actuator** (common in early models)
- **Oil filter housing gasket**
- **Oil cooler lines** (especially in GLA/QX30)
- **PCV system failures** (leading to oil burning)
- Some owners report **excessive oil consumption (1 2 quarts per 1,000 miles)**, which can be costly if not addressed.
2. **Turbocharger Reliability**
- The **first-gen turbo (BOSCH or Garrett) can fail prematurely**, often due to:- **Lack of proper oil flow** (clogged oil filter, weak oil pump)
- **Overheating** (poor cooling system maintenance)
- **Carbon buildup** (if not using fuel system cleaners)
- Replacing the turbo can cost **$1,500 $3,000 ** if done professionally.
3. **Electrical and Infotainment Issues**
- **MBUX (later models) and COMAND systems** can be glitchy, with software bugs and slow response times.
- **Bluetooth and phone connectivity** issues are common, requiring frequent resets.
- **Sensor failures** (e.g., camshaft position sensor, MAF sensor) can cause rough idling or stalling.
4. **Transmission Problems (In Some Models)**
- The **7G-Tronic automatic (in CLA/GLA) can be finicky**, with reports of:- **Delayed shifts**
- **Slipping gears**
- **Electrical gremlins** (requiring reprogramming)
- The **Infinity QX30 s transmission** is generally more reliable but still not as smooth as a ZF 9-speed.
5. **Rust and Body Issues**
- **Lower control arms, subframe, and wheel wells** are prone to rust, especially in snowy or salted regions.
- **Sunroof leaks** are a known issue in some CLA models.
6. **High Maintenance Costs**
- Even with a reliable engine, **Mercedes-Benz dealership labor rates are expensive** (often **$120 $150/hour**).
- **OEM parts (e.g., turbo, injectors, sensors) are costly** compared to aftermarket alternatives.
7. **Depreciation and Market Saturation**
- These models have **depreciated significantly** since their peak, meaning used prices are low but so is the resale value.
- The **CLA and GLA** are now considered **entry-level Mercedes**, which may not hold value as well as higher-end models.
8. **Potential for Hidden Issues**
- **Water pump failures** (especially in GLA/QX30) can lead to **engine overheating**.
- **Exhaust manifold cracks** (common in early 2.0Ts) can cause **check engine lights and performance loss**.
- **Suspension wear** (struts, bushings) is expected but can be costly to replace.
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### **Key Considerations Before Buying**
1. **Check the Cylinder Head (Part #2700103002) for Damage**
- This part is critical for **valve timing and engine performance**. Look for:- **Cracks** (especially around bolt holes)
- **Warping** (can cause poor sealing)
- **Worn camshaft lobes** (can lead to valve train issues)
- If the head is **severely worn or cracked**, replacing it (**$1,500 $2,500 **) may be necessary.
2. **Verify Oil System Health**
- **Check for oil leaks** (valvetronic, oil filter housing, PCV).
- **Test oil consumption** if the car burns **more than 1 quart per 1,000 miles**, it may need **valve stem seals or PCV repairs**.
- **Inspect the oil cooler** (common failure point in GLA/QX30).
3. **Inspect the Turbocharger**
- **Listen for excessive whine or lag** (signs of turbo failure).
- **Check oil pressure** low oil flow can destroy the turbo.
- **Look for carbon buildup** (if not using fuel additives).
4. **Test Drive for Transmission and Electrical Issues**
- **Shifts should be smooth** hesitation or jerking indicates transmission problems.
- **Test all electronics** (infotainment, sensors, lights, climate control).
5. **Review Maintenance History**
- **Oil changes every 5,000 7,500 miles** are **critical** for turbo longevity.
- **Timing belt replacement** (if applicable) should have been done at **100,000 120,000 miles**.
- **Spark plugs and coils** should be replaced every **60,000 100,000 miles**.
6. **Budget for Potential Repairs**
- **Common repair costs:**- **Turbo replacement:** $1,500 $3,000
- **Oil cooler replacement:** $800 $1,500
- **Valvetronic actuator:** $500 $1,200
- **Transmission reprogramming:** $300 $800
- **Suspension refresh (struts, bushings):** $1,500 $3,000
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### **Final Recommendation**
#### **Buy If:**You **prioritize performance and reliability** over luxury branding.
You **plan to maintain the car properly** (regular oil changes, turbo care, electrical checks).
You **find a well-documented example** with **full service records**, especially for oil system and turbo health.
You **intend to drive it for 100,000 miles** and are prepared for **potential repairs**.
You **want a tunable, fuel-efficient turbocharged engine
2013 2020 MERCEDES CLA B250 CLA250 GLA250 INFINITY QX30 2.0L TURBO CYLINDER HEAD ASSEMBLY 36000.