Compatibility and identifiers Fits BMW models including X3, X5, Z4 and E series models E46, E53, E65, E66, E67, E81, E83, E85, E90, E39. Part numbers 0221504464, 0221504100, 12131712219, UF522. Type: ignition coil. Benefits - Improves engine performance and contributes to a safer, smoother ride. - Easy and fast to install and replace. Reliable performance. - Low energy consumption: coil design focuses on energy savings, reducing energy losses and improving fuel efficiency. What you get and why it matters This ignition coil is designed to restore and maintain strong ignition in compatible BMWs, supporting consistent starting, smoother operation, and better overall efficiency. Use scenarios - Replacement on compatible BMWs (X3, X5, Z4, E46, E53, E65, E66, E67, E81, E83, E85, E90, E39) to restore ignition quality and performance. - Routine maintenance for older models to support efficient combustion and smoother idle. - Fleet or workshop use where multiple vehicles use the same part numbers (0221504464, 0221504100, 12131712219, UF522) for standardized ignition coil replacement.