Genuine BMW Camshaft Sprocket – N57 (11318509927)

Quick Info

Genuine BMW camshaft sprocket for N57 diesel engines.
Used in the timing chain system to drive the camshaft and maintain precise valve timing.

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Description

BMW 11318509927 is an OEM camshaft sprocket used in BMW N57 3.0 diesel engines.

The sprocket transfers drive from the timing chain to the camshaft, ensuring accurate valve timing and smooth engine operation. Precision-machined for high-load diesel applications and designed to work with the factory timing chain system.

Commonly replaced during major timing chain repairs or engine rebuilds.

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Fitment

Engines:

• N57 3.0D
• N57N
• N57D30A / B / C

⚠️ Includes M50d applications.

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Common Models

• F10 / F11 530d / 535d
• F30 / F31 330d / 335d
• F01 / F02 730d / 740d
• F15 X5 30d / 40d / M50d
• F16 X6 30d / 40d / M50d

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Part Numbers

• BMW: 11318509927
• BMW: 11 31 8 509 927

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Technical Details

• Type: Camshaft sprocket / timing gear
• Position: Camshaft timing drive
• Material: Hardened steel
• Genuine BMW OEM component

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Notes

• Used with rear-mounted timing chain systems
• Designed for high-torque diesel engines
• Often replaced together with timing chain, guides and tensioners

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Important

❗ Not interchangeable with M57 sprockets
❗ Timing alignment tools required during installation
❗ Always inspect timing chain and guides during replacement

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Common issues when worn

• Timing chain noise
• Excessive sprocket wear
• Timing deviation faults
• Poor engine timing performance

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Fitment Summary

✔️ N57 / N57N
✔️ Includes M50d applications
✔️ Genuine BMW timing component
❌ Not for M57
❌ Not for N47