BMW ASA Bolt – 13527800395 (M12x1 Timing Gear Bolt)

Quick Info

Genuine BMW ASA bolt used in diesel engine timing and high-pressure fuel pump assemblies.
Commonly fitted to timing gears and high-pressure pump drive components.

Description

BMW 13527800395 is an OEM ASA bolt used in BMW diesel timing systems and high-pressure fuel pump drive assemblies.

This bolt is designed for high-load applications where precise clamping force is required, especially around timing gears and fuel pump drive components.

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Fitment

Engines:

• N47 2.0D
• N57 / N57N 3.0D
• B47 2.0D
• B57 3.0D

⚠️ Some MINI diesel applications also use this bolt.

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Common Models

• E90 / E91 320d
• F30 320d / 330d / 335d
• F10 / F11 530d / 535d
• G30 520d / 530d
• F15 / G05 X5 diesel
• MINI Cooper D

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Part Numbers

• BMW: 13527800395
• BMW: 13 52 7 800 395
• BMW short number: 7800395

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Technical Details

• Type: ASA bolt / Torx bolt
• Thread size: M12x1.0
• Length: 25mm
• Strength grade: 10.9

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Notes

• Genuine BMW timing/fuel system hardware
• Used in high-pressure pump and timing gear applications
• Commonly replaced during timing chain or fuel pump repairs

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Important

❗ Not reusable in many repair procedures
❗ Always follow BMW torque specifications
❗ Must match exact application before installation

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Common reasons for replacement

• Timing chain repair
• High-pressure fuel pump replacement
• Damaged or stretched original hardware
• Preventative replacement during rebuilds

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Fitment Summary

✔️ N47 / N57 / B47 / B57
✔️ Timing gear & high-pressure pump applications
✔️ BMW + MINI diesel engines
❌ Not for M57 engines