Weistec Engineering complete set of CNC machined billet aluminum idlers. The factory Mercedes parts are plastic and have been a known problem for many naturally aspirated vehicles. This is a great solution for long term use in stock to highly modified vehicles.
Key Features:
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CNC machined 6061 aluminum
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Hard anodized to military spec
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Direct replacement/bolt in for M156/M159
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Utilizes factory belt
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100% serviceable
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Great for use in harsh environments
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High quality bearings