Oil Pump Chain Tensioner Repair Kit — Mercedes-Benz M112 / M113 V6/V8 | OEM 1121810059 | Fixes Startup Rattle
Eliminate Cold Start Oil Pump Chain Rattle on Your Mercedes M112 or M113 — Complete Tensioner Repair Kit.
The oil pump chain tensioner on Mercedes M112 (V6) and M113 (V8) petrol engines loses its spring preload over time — allowing the oil pump chain to rattle loudly on cold starts until oil pressure builds. This can indicate inadequate oil pump priming on startup, leading to accelerated engine wear. This complete repair kit restores correct tensioner function.
Symptoms Fixed
- Loud chain rattle on cold start that disappears after a few seconds
- Oil pump chain slap
OEM Reference
- 1121810059
Vehicle Compatibility
Mercedes-Benz C-Class W203, E-Class W210/W211, ML-Class W163/W164, CLK W208/W209, S-Class W220, SLK R170, G-Class — with M112 V6 or M113 V8 petrol engine
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