S85 Helical Pump GearUpdate your early model (up to 12 05) M5 or M6 vanos pump gear with this later version when rebuilding your vanos oil pump. The updated gear has a redesigned tooth profile to address failures in the early versions. Note: You will also need the updated crank hub helical gear with this item if converting from the older version. It's also recommended to update the pump chain guides as well.
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