Timing Chain Tensioner for Mercedes-Benz Engines

This precision hydraulic unit keeps the timing chain tight so your cams and crank stay in perfect sync. It’s essential on modern Mercedes V6/V8 engines where accurate valve timing means smooth idle, strong torque, and clean emissions. A fresh, high-quality tensioner prevents chain slap on cold starts and protects guides and sprockets for long engine life.

Why this part is needed

Over time, the internal spring and check valve wear. Oil pressure bleeds off, the chain loses tension, and you hear a brief rattle at startup or constant noise under load. Replacing the unit restores quiet operation and precise timing.

How it works ⚙️

The body houses a plunger and spring that pre-load the chain. Once oil pressure builds, a non-return valve locks in hydraulic force, maintaining constant tension across RPM. Anti-drainback design reduces dry starts.

What happens if it fails ⚠️

Symptoms include cold-start rattle, cam/crank correlation faults, rough idle, power loss, and metal debris from worn guides. Ignored too long, the chain can jump a tooth, risking bent valves and costly repairs. Install with fresh oil and inspect guides for wear to maximize service life.

Compatible Models

• C 230
• C 280
• C 300
• C 350
• CLC 230
• CLC 350
• E 280
• E 300
• E 350
• E 500
• E 550
• S 350
• S 450
• S 500
• S 550
• ML 300
• ML 350
• ML 450 4Matic Hybrid
• ML 500
• ML 550
• GLK 350
• GL 450
• GL 500
• GL 550
• SLK 280
• SLK 300
• SLK 350
• SL 500
• SL 550
• CLK 350
• CLK 500
• CLS 350
• CLS 500
• R 350
• R 500 4Matic
• R 550 4Matic
• CL 500
• CL 550
• G 500
• G 550
• Kombi
• Luxuskombi
• Kastenwagen
• 309CDI
• 311CDI
• 315CDI
• 316CDI
• 318CDI
• 322
• 324
• 224