Mercedes-Benz 2003 M-Class - Manual (Page 281)

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Technical data
Electrical system
Electrical system
Model ML 320, ML 350 ML 500 ML 55 AMG
Generator (alternator) 14 V/120 A 14 V/150 A 14 V/150 A
Starter motor 12 V/1.7 kW 12 V/1.7 kW 12 V/1.7 kW
Battery 12 V/100 Ah 12 V/100 Ah 12 V/100 Ah
Spark plugs Bosch F 8 DPP332
Bosch F 8 DPER Bosch F 8 DPP332
Bosch F 8 DPER NGK PFR 5-11
Electrode gap 0.039 in (1.0 mm) 0.039 in (1.0 mm) 0.039 in (1.0 mm)
Tightening torque 15 – 22 ft.lb (20 – 30 Nm) 15 – 22 ft.lb (20 – 30 Nm) 15 – 22 ft.lb (20 – 30 Nm)