Camshaft Phaser A2700506100 for Mercedes M270 M274
The Camshaft Phaser A2700506100 is the intake camshaft timing adjuster installed in Mercedes-Benz M270 and M274 turbocharged petrol engines. These engines power a wide range of vehicles including A-Class, B-Class, CLA, GLA, C-Class and GLC models equipped with 1.6-litre and 2.0-litre direct-injection turbo power units.
Within the timing system, the Camshaft Phaser A2700506100 is mounted at the front of the intake camshaft and connected directly to the timing chain sprocket. Hydraulic oil pressure controlled by the camshaft adjustment solenoid enters internal chambers inside the phaser and rotates the camshaft relative to the sprocket. This allows the engine control unit to continuously adjust intake valve timing depending on engine load, rpm and temperature conditions.
In aftermarket catalogues the component is also listed as Mercedes M270 M274 Camshaft Phaser A2700506100, M270 M274 Intake Camshaft Phaser, or Inlet Camshaft Phaser A2700506100. Multiple OE revisions exist within the same design family including A2700501147 Intake Camshaft Adjuster, A2600500500 and A2700500847. These versions are widely catalogued as compatible intake camshaft adjusters used within the M270 / M274 timing chain assembly.
When internal wear develops in the rotor chambers or locking mechanism, the camshaft gear may move slightly during engine start-up. This can produce the well-known cold start rattle often reported by technicians working on Mercedes M270 and M274 engines. Replacing the worn timing gear with Camshaft Phaser A2700506100 restores stable camshaft positioning and consistent valve timing control.
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | Intake Camshaft Phaser A2700506100 |
| OE Part Numbers | A2700506100, A2700501147, A2600500500, A2700500847 |
| Engine Platform | Mercedes M270 / M274 |
| Engine Displacement | 1.6T / 2.0T |
| Warranty | 12 months or 12,000 miles from the date of Ex-factory |
| Packing | Neutral Packing or Customer Required |
| MOQ | 6 pcs |
| Place for Origin | Ningbo City of China |
| Brand | Wellgine |
Camshaft Phaser Operating Principle
The Mercedes M270 M274 Camshaft Phaser A2700506100 is a hydraulic mechanical device designed to alter camshaft timing relative to the crankshaft. Key internal components include:
- outer sprocket housing connected to the timing chain
- internal rotor fixed to the camshaft
- hydraulic chambers controlling advance and retard angles
- locking pin mechanism used during engine start-up
When engine oil pressure is directed into the phaser chambers by the camshaft solenoid valve, hydraulic force rotates the rotor relative to the sprocket housing. This movement changes the intake camshaft angle and adjusts valve opening timing to optimise combustion across different operating conditions.
Camshaft Phaser Failure Causes
Technicians frequently search for Mercedes M270 M274 cold start rattle camshaft adjuster fix when diagnosing valve timing noise. Several mechanical and hydraulic factors may contribute to camshaft phaser wear.
- Locking Pin Wear: The internal locking pin stabilises the camshaft during engine start-up. Over time, repeated load cycles can cause slight wear that allows the camshaft gear to move momentarily before oil pressure builds.
- Hydraulic Chamber Leakage: Excessive internal clearance can cause oil pressure leakage inside the phaser, reducing adjustment response speed.
- Oil Contamination: Metal particles or degraded engine oil may accelerate wear inside hydraulic chambers and rotor surfaces.
- Slow Oil Pressure Build-Up: Engines with delayed oil pressure during cold start may experience increased phaser movement before stabilisation.
Mercedes M270 M274 Camshaft Phaser Symptoms
When the Camshaft Phaser A2700506100 starts to wear, several camshaft phaser failure symptoms may appear in Mercedes M270 and M274 engines.
- Cold Start Rattle: A short metallic rattle may occur for a few seconds during engine start-up, especially after the vehicle has been parked overnight. This is a common Mercedes cold start rattle caused by wear inside the camshaft phaser locking mechanism before engine oil pressure stabilises.
- Camshaft Timing Fault Codes: The engine control unit may detect incorrect valve timing and store camshaft timing fault codes such as P001A or P001B, indicating abnormal intake camshaft adjustment performance.
- Rough Idle or Poor Engine Smoothness: Incorrect intake camshaft timing may lead to rough idle, slight engine vibration, or unstable engine speed during cold start or low RPM operation.
- Noise from Timing Chain Area: Technicians may also hear abnormal noise from the front timing chain area, which can be caused by internal play inside a worn camshaft phaser.
Replacing the worn intake camshaft phaser A2700506100 usually restores proper valve timing and eliminates these symptoms.
FAQ
1. Which Mercedes models are compatible with A2700506100?
The Camshaft Phaser A2700506100 fits Mercedes A-Class, B-Class, CLA, GLA, C-Class, and GLC with M270 or M274 1.6T/2.0T engines.
2. Can A2700506100 replace A2700501147 or A2600500500?
Yes, this phaser is fully compatible with OE numbers A2700501147, A2600500500, A2700500847, providing a direct replacement for original camshaft adjusters.
3. Will replacing the camshaft phaser fix cold start rattle?
Yes. Replacing the worn A2700506100 intake camshaft phaser restores proper valve timing and usually eliminates cold start rattle in M270/M274 engines.
4. Can this camshaft phaser be installed in workshops in Europe?
Absolutely. The phaser is factory direct from China, compatible with European Mercedes models, and can be installed in professional workshops following standard camshaft timing procedures.
5. Is this an OEM-quality or aftermarket part?
This phaser is produced to OEM-level specifications, ensuring the same performance and reliability as the original Mercedes component.
6. Does it affect engine performance if worn?
Yes, a worn camshaft phaser can reduce low-speed torque, increase fuel consumption, and cause unstable idle. Timely replacement restores engine efficiency.
7. What is the typical lifespan of A2700506100?
Under normal operating conditions and regular oil maintenance, the phaser typically lasts 120,000–150,000 km, depending on driving style and oil quality.
8. Where can I source A2700506100 in Europe?
The phaser is supplied directly from our Chinese factory, with logistics to Europe. Bulk orders or workshop supply are available for Mercedes dealerships, distributors, and repair shops.