The B11 4.0 is the replacement for the B11 3,5. It was introduced in May 1993 and went out of production in February 1994.
The engine is the same unit as in the B10 4.0 which produces 315 bhp and 410 Nm of torque.
Alpina claimed a 0-100 km/h time of 7,1 seconds and a top speed of 260 km/h.
A total of 7 cars were built.