921 bulb: cars and positions

Across its 112 listings, the 921 is printed for 19 models; Toyota Camry lists it most often (22 times, 2015–2024).

Positions it is printed for: back-up lamp, cargo lamp, center high-mounted stoplamp (chmsl), backup lamp, central high mounted brake lamp, reverse lights, reverse lights (4-door), backup, backup (reversing), back-up, back-up lights, rear turn signal lights and high mounted stoplight and cargo lamp.

Models that list the 921

Every listing

Names you will see on the package

Manuals print the base number plus maker suffixes. The suffixes seen for this bulb are 921, 921 (W16W) and 921LL. Suffixes such as NA (amber), K or LL (long life) change the colour or life rating, not the base and fit; an amber NA bulb should be replaced with another amber bulb. Some manuals print an equivalent name alongside it: W16W. Those pairings come from the manual itself.

Before you buy

Bulb numbers change with trim and lighting package: a car with LED headlights has no 921 in that position even when the halogen version does. Open your model year and match the row for your trim, then check the number on the old bulb's base. Halogen capsules (H-series and 9000-series) should be handled by the base, not the glass.

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