RIDEX Crankshaft Pulley / Harmonic Balancer – 3213B0015

Quick Info

RIDEX 3213B0015 is a crankshaft pulley with integrated vibration damper for BMW diesel engines.
Designed to reduce crankshaft vibration and drive auxiliary belt systems smoothly.

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Description

RIDEX 3213B0015 is an OE-style crankshaft pulley (harmonic balancer) used on BMW M57 diesel engines.

The pulley transfers drive from the crankshaft to the auxiliary belt system while the integrated rubber damper helps absorb torsional vibration from the engine. This reduces stress on:

• Crankshaft
• Belt drive system
• Alternator
• Power steering
• Air conditioning compressor

A worn pulley can separate or wobble and should be replaced immediately.

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Fitment

Engines:

• M57 3.0D
• M57N
• M57N2

❌ Not for N57 engines.

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Common Models

• E46 330d
• E90 / E91 325d / 330d / 335d
• E60 / E61 525d / 530d / 535d
• E65 730d
• E83 X3 3.0d
• E53 / E70 X5 3.0d
• E71 X6 35d

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Part Numbers

• RIDEX: 3213B0015
• BMW OE:
  • 11238511371
  • 11237793593
  • 11237788611

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Technical Details

• Type: Crankshaft pulley / harmonic balancer
• Outer diameter: 192mm
• Inner diameter: 40mm
• Belt setup: 4PK + 6PK
• Material: Elastomer vibration damper design

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Notes

• Belt-driven auxiliary pulley
• Integrated vibration damper
• Direct OE-style replacement

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Important

❗ Not a timing chain component
❗ Not interchangeable with N57 pulleys
❗ Always inspect belt tensioner and idler pulleys during replacement

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Common issues when faulty

• Crank pulley wobble
• Belt squeal
• Vibration at idle
• Rubber separation
• Auxiliary belt failure

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Fitment Summary

✔️ M57 / M57N / M57N2
✔️ BMW 3.0 diesel applications
✔️ Harmonic balancer / crank pulley
❌ Not N57