Opel Automobile Owner's Manual page 147

Engine identification
It is possible, using the Vehicle
Identification Number (VIN), to
determine the engine type that is
installed in your vehicle. The seventh
digit denotes the engine type:
Digit Engine
C:
1.9 Diesel, F9Q 760 - 74 kW
H: 2.0 Diesel, M9R 782/786 -
84 kW
3)
J: 2.5 Diesel, G9U 630 -
107 kW 4)
K: 1.9 Diesel, F9Q 760 - 74 kW
(Turkey only) 2)
L: 2.0 Petrol, F4R 820 - 86 kW
M: 2.0 Diesel, M9R 782/786 -
66 kW 3)
N: 2.0 Petrol, F4R 820 - 86 kW
R:
2.5 Diesel, G9U 630 - 84 kW
Euro III.
2)
Euro IV.
3)
Euro IV with diesel particle filter (DPF).
4)
Digit Engine
U: 2.0 Diesel, M9R 784/788 -
84 kW 3)
V: 2.5 Diesel, G9U 630 -
107 kW
3)
W:
2.0 Petrol, F4R 820 - 86 kW
2)
Engine identifier code and engine
number
Stamped on the lower rear of the
engine block on an identification
plate.
3)
3)
4)
Technical data
2)
147