BMW E87 116i 118i N45 N46 Timing Chain Guide
BMW
3 Series
2004
N45/N46 1.6/2.0
⚡ Quick Summary
Severity Level
Medium
Safe to Drive?
✅ Safe to Drive
Safety Impact
No direct safety impact reported by owners
Urgency Level
🟡 Monitor Closely
The N45/N46 petrol engines in E87 develop plastic timing chain guide wear. Guide fragments entering the engine oil is the worst case scenario. Front-mounted chain is more accessible than N47. Chain kit replacement costs £500-900.
Onarım / Çözüm
No confirmed fixes yet. Share yours below.
⚠️ Yanlış Teşhis mi?
No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this BMW 3 Series 2004 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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