-40%
35% underdrive alternator generator pulley BMW M44 M50 M52 M54 S50 Bosch -type
35% underdrive alternator generator pulley BMW M44 M50 M52 M54 S50 Bosch -type
35% underdrive alternator generator pulley BMW M44 M50 M52 M54 S50 Bosch -type
35% underdrive alternator generator pulley BMW M44 M50 M52 M54 S50 Bosch -type
35% underdrive alternator generator pulley BMW M44 M50 M52 M54 S50 Bosch -type
35% underdrive alternator generator pulley BMW M44 M50 M52 M54 S50 Bosch -type
35% underdrive alternator generator pulley BMW M44 M50 M52 M54 S50 Bosch -type

35% underdrive alternator generator pulley BMW M44 M50 M52 M54 S50 Bosch -type

$ 53.85

Availability: 98 in stock
  • Brand: MRT Engineering
  • Fitment Type: Performance/Custom
  • Returns Accepted: ReturnsNotAccepted
  • Warranty: No Warranty
  • Superseded Part Number: 12311432988
  • Condition: New
  • Manufacturer Part Number: MRT-20014-1
  • Bore Size: 17,00
  • Country/Region of Manufacture: Finland

    Description

    35% underdrive alternator pulley BMW M50 M52 M54 S50,
    Bosch -type
    If you're building a track/drifting/rally M50/M52/M54/S50 high revving engine, here's a simple and effective solution to increase alternator life and reduce horsepower losses. This billet aluminum alternator pulley has 35% underdrive ratio compared to original pulley, means that the drive ratio will be changed from 3:1 to 2:1.
    The kit consists:
    Billet aluminum alternator pulley compatible with M50, M52, M54, S50 BOSCH alternators
    Replaces BMW part No.
    12311432988 or 12311703736 or 12311726139 (check from the pictures, black pulley)
    Longer serpentine belt might be required!
    Loctite or similar thread or shaft lock adhesive is recommended on installation of the pulley.
    We're using DHL Express shipping, item tracking can be found here:
    https://www.dhl.com/en/express.html