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The Gates Micro‑V serpentine belt for 2004–2009 Audi S4 V‑8 4.2L is a standard V‑ribbed accessory belt intended to replace the vehicle's serpentine drive belt. Matched to the S4 accessory routing, it restores power transmission to front‑end accessories via the V‑rib profile and is specified for use when servicing the accessory drive on the listed models.
Gates 04-09 Audi S4 V-8 4.2L Serpentine Standard V-Ribbed Belt
