Timing chain kit M611 for Mercedes-Benz

OE spec timing chain kit, engineered for Mercedes Benz with the OM611, also referred to as M611, 2.2 CDI diesel. Restores precise valve timing, quiet starts and reliable performance after chain stretch or guide wear. Sold per kit, variant specific to engine code and year.

What this is / isn’t:
Included: Primary timing chain, guides, hydraulic tensioner, guide pins or rails, front cover seal or gasket where supplied.

Important: Match by VIN and engine code OM611, M611. Early and late units can use different guide designs and tensioners. Sprinter and Vito applications may differ from passenger cars. Always confirm by OE number before ordering.

Key Features:

• OE matched geometry: Correct chain pitch and guide profile for accurate cam timing.

• Quiet operation: Hardened pins and low friction guide faces reduce start up rattle.

• Stable tension control: Calibrated hydraulic tensioner maintains chain load across rpm and temperature.

• Leak resistant service: New seal or gasket where supplied to help prevent seepage after reassembly.

• Exact fitment: Direct replacement components for a no mod install when used with factory timing tools.

Compatibility:
Common models with OM611 2.2 CDI, confirm by VIN or OE:

• C Class W202 late, W203 early C220 CDI

• E Class W210 late, W211 early E220 CDI

• CLK C208 220 CDI where fitted

• Vito W638 108/110 CDI

• Sprinter W901 W905 208/211/311/313 CDI and similar
  Drivetrain: 2WD and 4x4 where applicable. Markets and years vary, always match by VIN.

Typical OE reference families, guide only:
A611 050 … timing chain, A611 052 … tensioner, A611 052 … guide sets, with supersessions by year.
Always order by the exact OE part number on your vehicle or confirm via VIN.

When to replace a timing chain kit:

• Rattle at cold start or warm idle, chain slap from the timing cover.

• Fault codes for cam crank correlation, P0016, P0017, or cam adjustment range errors.

• Retarded cam timing on scan data, rough running, poor fuel economy.

• Metal debris in the oil filter, worn guide material found during service.

Installation notes, pro tips:

• Use correct crank and cam locking tools, follow factory timing marks and torque specs.

• Replace one time use fasteners, crank bolt and cam bolts where specified.

• Clean sealing faces, apply approved sealant to the front cover, allow proper cure.

• Change engine oil and filter after repair, use Mercedes approved oil, MB 229.x spec.

• Clear adaptations with a scan tool, road test and recheck for leaks or stored faults.

What’s included / not included:
✅ Timing chain, guides and hydraulic tensioner, front cover seal or gasket where supplied
❌ Oil, sealant, crank bolt, cam phasers, water pump, belts, auxiliary hardware unless listed

Q&A
Q1: Does this kit stop the cold start rattle?
Yes, when rattle is caused by chain stretch or worn guides. Correct tensioner and precise timing setup are essential.
Q2: Do I need special tools?
Yes, cam and crank locking tools and a torque angle gauge are required to set timing accurately.
Q3: Can I reuse the crankshaft bolt?
Not advised, it is usually torque to yield. Replace with new where specified.
Q4: Will this fit OM646 or OM612?
No, those engines use different components. Match by VIN and engine code OM611.

Why choose TOParts:
OE grade engine kits for Mercedes Benz with precise fitment, correct materials and proven durability, trusted by panel shops and independent Mercedes specialists across South Africa.