VALEO Underdrive Alternator Pulley for BMW M43 M44 M50 M52 M54

  • 90.10€

  • Ex Tax: 74.46€



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21 Jul.

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22 Jul.

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35% Underdrive Alternator Pulley for BMW Engines

Upgrade your BMW M43, M44, M50, M52, M54, S50, or S52 with our high-performance 35% underdrive alternator pulley. Designed for both Bosch and Valeo alternators, this billet aluminum pulley enhances alternator longevity while reducing horsepower losses.

Key Features:

  • Billet aluminum construction for durability
  • Compatible with Bosch (BMW part No. 12311432988, 12311703736, 12311726139) and Valeo (BMW part No. 12311713945, 12311436636) alternators
  • Increases alternator life and efficiency
  • May require a longer serpentine belt
  • Includes MRT Engineering decals

Why Choose MRT Engineering?

MRT Engineering is committed to quality and performance. Our products undergo rigorous testing and are crafted from the finest materials, ensuring reliability on both the street and track. By choosing MRT, you invest in a product backed by customer feedback and continuous improvement.

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