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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    LN3 Confirmed

    Pontiac · Regular Production Option

    Engine, 3.8L V6, multiport fuel injection, 3800

    Years 1988–91 Models 1
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    Also documented for BuickOldsmobile

    Documented applications

    Bonneville — Eighth generation (1987–1991)
    • 1988–1991 Confirmed

      the revised 3.8 L, 165 hp, sold as the 3800 V6 (VIN C); Wikipedia's infobox gives multiport injection and its text says sequential-port, the Bonneville Club list prints MFI and "3800 I"; the Bonneville Club list prints the code but no year

    This page aggregates every documented appearance of LN3 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.