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The Gates belt drive tensioner for 2012–2015 Mercedes‑Benz S550 with the 4.6L V8 is a replacement tensioner assembly that restores correct serpentine belt tension. This OE-style direct-fit unit helps maintain accessory drive stability, keeping the alternator and driven components operating reliably while reducing belt slip and wear for the listed S550 applications.
Gates 12-15 Mercedes-Benz S550 V-8 4.6L Tensioner Assy. Belt Drive Tensioner
