FEBI BILSTEIN Crankshaft Pulley / Harmonic Balancer – 27340

Quick Info

OE-quality crankshaft pulley with integrated vibration damper for BMW M57 diesel engines.
Designed to reduce crankshaft vibration and drive the auxiliary belt system smoothly.

Description

FEBI 27340 is a crankshaft pulley (harmonic balancer) designed for BMW M57 diesel engines.

The pulley transfers drive from the crankshaft to the auxiliary belt system while the integrated rubber damper absorbs torsional engine vibration to protect:

• Crankshaft
• Belt drive system
• Alternator
• Power steering
• AC compressor

A failing pulley can separate, wobble or damage the auxiliary belt system.

---

Fitment

Engines:

• M57 3.0D
• M57N
• M57N2

❌ Not for N57 engines.

---

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

---

Part Numbers

• FEBI BILSTEIN: 27340
• BMW OE:
  • 11238511371
  • 11237793593
  • 11237788611

---

Technical Details

• Type: Crankshaft pulley / harmonic balancer
• Material: Metal-rubber vibration damper
• Outer diameter: 170mm / 192mm
• Inner diameter: 24mm
• Rib setup: 8PK
• Mounting holes: 4-hole design

---

Notes

• Integrated vibration damping design
• Direct OE-style replacement
• Recommended to inspect belt tensioner and idler pulleys during replacement

---

Important

❗ Not a timing chain component
❗ Not interchangeable with N57 pulleys
❗ Always inspect auxiliary belt system during installation

---

Common issues when faulty

• Crank pulley wobble
• Belt squeal
• Excessive engine vibration
• Rubber separation
• Auxiliary belt failure

---

Fitment Summary

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