This is a Bosch ignition coil (part number 0 221 504 464, also labeled as 0221504464 or BIC464). It's an ignition coil-on-plug (pencil-style coil) designed for various BMW models (and some Alpina/Rolls-Royce variants), commonly used in engines like the N52, M54, and others in the 3 Series (E46, E90/E91/E92), 5 Series (E39, E60/E61), 6 Series, 7 Series, etc. bought from Euro parts but never used. unopened .
