Serpentine Belt Tool • Fits tensioner pulleys with 13 mm–16 mm, 18 mm hex or 3/8" and 1/2" square drives. • For hard to access tensioners; there are 13 mm and 15 mm 12-point wrenches built into the handle. • 13 mm, 14 mm and 15 mm crows foot wrenches also included. No. 4645 – Serpentine belt tool.
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