FEBI BILSTEIN 31729 Alternator Freewheel Pulley

Compatible with BMW 3 Compact (E46) , BMW 3 (E46) , BMW 3 Coupe (E46) Show more info
This FEBI BILSTEIN alternator freewheel pulley (part code 31729) ensures smooth operation of your vehicle's charging system.
24.12 EUR
inc. VAT 21%
In stock 1
Delivery 1 day (25.03.2026)
PN 31729
Make FEBI BILSTEIN
EAN 4027816317296

The FEBI BILSTEIN 31729 is a high-quality alternator freewheel pulley designed to provide reliable performance and longevity. This component plays a crucial role in the serpentine belt system, allowing the alternator to spin down quickly when the engine speed drops. This prevents excessive wear on the alternator's internal components and the drive belt, contributing to a quieter and more efficient operation. Engineered to meet stringent quality standards, the 31729 freewheel pulley from FEBI BILSTEIN offers a direct fit for compatible vehicles, ensuring ease of installation and optimal functionality. Regular inspection and replacement of this part can help prevent premature failure of the alternator and belt system.

  • Ensures smooth alternator operation
  • Reduces wear on alternator and drive belt
  • Contributes to quieter engine operation
  • High-quality construction by FEBI BILSTEIN
  • Direct fit for compatible applications
  • Helps prevent premature component failure
  • Optimizes charging system efficiency
Inner diameter [mm]
17
Outer diameter [mm]
53
Outer diameter [mm]
49
Number of grooves
6
Additional article/Additional info 2
with cover
  • BMW
    • 3 Compact (E46)
      • 316 ti (85kW/115PS)
      • 318 ti (105kW/143PS)
      • 316 ti (85kW/115PS)
    • 3 (E46)
      • 318 i (105kW/143PS)
      • 316 i (85kW/115PS)
      • 316 i (85kW/115PS)
    • 3 Coupe (E46)
      • 318 Ci (105kW/143PS)
      • 316 Ci (85kW/115PS)
      • 318 Ci (110kW/150PS)
    • 3 Touring (E46)
      • 318 i (105kW/143PS)
      • 316 i (85kW/115PS)
    • 3 Kabriolets (E46)
      • 318 Ci (105kW/143PS)
      • 318 Ci (110kW/150PS)
    • 1 (E81)
      • 116 i (85kW/115PS)
      • 120 i (115kW/156PS)
      • 118 i (95kW/129PS)
    • 3 (E90)
      • 320 i (110kW/150PS)
      • 318 i (95kW/129PS)
      • 316 i (85kW/115PS)
    • Z4 Roadster (E85)
      • 2.0 i (110kW/150PS)
    • 3 Touring (E91)
      • 320 i (110kW/150PS)
      • 318 i (95kW/129PS)
    • 1 Kabriolets (E88)
      • 120 i (115kW/156PS)
    • 1 (E87)
      • 116 i (85kW/115PS)
      • 118 i (95kW/129PS)
      • 120 i (110kW/150PS)
      • 120 i (115kW/156PS)
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