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International Automotive Technicians Network
Re: OE spark plug and O2/AFR lookup
Posted to Shop Management Forum on 12/19/2023 3 Replies

No. OE's can change suppliers at the drop of a hat. Even on the assembly line, let alone on 3 or 12 year old models. I saw an untouched original V-6 Toyota once, with Denso spark plugs on one side and NGK on the other.

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