From Wikipedia, the free encyclopedia
S54 may refer to :
- S54 (Long Island bus)
- S54 (New York City bus) serving Staten Island
- BMW S54, a high performance version of the M54 straight-6 engine
- a Toyota S transmission model
- Sukhoi S-54, a single-engined trainer derivative of the Su-27 aircraft proposed as by Sukhoi
- S54 BMW Engine
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