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The Ferrea single spring kit for 2017–2018 Audi 2.5 TFSI engines is a direct‑fit valve spring package tailored to that five‑cylinder TFSI application. Supplied as a single‑spring configuration, the kit provides replacement springs matched to the 2.5 TFSI cylinder head for service or valvetrain component changes on 2017–2018 Audi models.
Ferrea 17-18 Audi 2.5 TFSI Single Spring Kit
