{"nhtsa_id":10207578,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-02-04","date":"2022-01-05","document_id":"2065480/4","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING; EQUIPMENT","mfr_system":null,"summary":"V8 Kovomo - Bentayga - Valve spring replacement (SC21/42). Technical background: The intake valve springs (16) and outlet valve springs (16) located within the cylinder heads of Bank 1 and 2 require replacing The replacement of all valve springs is required due to an issue which was discovered during a routine quality inspection VERY IMPORTANT: Before continuing with the onward instructions the operative should confirm if the symptoms within TPI 2064776/- are applicable In the event the symptoms are applicable the operative MUST first conduct TPI 2064776/- to completion The operative MUST then raise a new Technical DISS query or respond via the already open DISS query and await feedback from Product Support before conducting any further work as further information will be requested back which may change the method of repair Remedy: The replacement of all intake valve springs and all outlet valve springs (Bank 1 and Bank 2) is required","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10207578-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10207578-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10207578","components":[{"id":"engine","name":"Engine","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"BENTLEY","model":"BENTAYGA","year_from":2021,"year_to":2022,"match":"exact","vehicle_ids":["2021_bentley_bentayga","2022_bentley_bentayga"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}