Timing chain kit M276 for Mercedes-Benz

and 3.0 biturbo. 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, fixed and pivot guides, hydraulic tensioner, guide pins or rails, front cover seal or gasket where supplied.

Important: Match by VIN and engine code M276. Sub variants differ, M276.9xx 3.5 NA and M276 DELA30 3.0 biturbo, including AMG 43. Guides, tensioner and chain spec can vary by year. 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 front cover seal or gasket where supplied to help prevent seepage after reassembly.

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

Compatibility:
Common Mercedes models with M276 V6, confirm by VIN or OE:

• C Class W204, W205 C350, C400, C450, AMG C43 where fitted

• E Class W212, W213 E300, E350, E400, E450

• CLS C218, early C257 CLS350, CLS400, CLS450

• S Class W222 early, some W221 late S300, S400, S450 where M276 fitted

• SLK R172, SLC R172

• GLK X204 late, GLC X253

• ML W166, GLE W166 and W167, GL X166, GLS X166, selected trims
  Drivetrain: 2WD and 4MATIC where applicable. Markets and years vary, match by VIN.

Typical OE reference families, guide only:
A276 050 … timing chain, A276 052 … tensioner, A276 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 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 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, use approved sealant on the front cover, allow proper cure.

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

• Clear adaptations, 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: Will this kit fix 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 needed 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: Do I need to replace cam phasers?
Only if diagnostics show wear or faults. Many repairs are resolved with chain, guides and tensioner.

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.