Applications for N51/N52 Engines:
2006-later E60 5-series - 525i, 528i, 530i
2006-later E90, E91, E92, E93 3-series - 325i, 328i, 330i
2007-later E82, E88 1-series - 125i, 128i
2006-later E85, E86 Z4 Coupe and Z4 Roadster - Z4 3.0i, Z4 3.0si
2009-later E89 Z4 Roadster - Z4 3.0i