Mercedes-Benz M-Class 2009 Owners Manual - Manual (Page 410)

Electrical system
408
Electrical system
Model ML 320 BlueTEC ML 350 ML 550 ML 63 AMG
Alternator 14 V / 220 A 14 V / 180 A 14 V / 180 A 14 V / 180 A
Starter motor 12 V / 2.0 kW 12 V / 1.4 kW 12 V / 1.4 kW 12 V / 2.1 kW
Battery 12 V / 95 Ah 12 V / 70 Ah 12 V / 95 Ah 12 V / 95 Ah
Spark plugs Type — Bosch Y 7 MPP33 NGK PLKR 7A NGK ILZKAR 7A10
Electrode gap — 0.031 in (0.8 mm) 0.031 in (0.8 mm) 0.039 in (1.0 mm)
Tightening torque — 15 lb-ft - 18 lb-ft
(20 Nm - 25 Nm) 15 lb-ft - 18 lb-ft
(20 Nm - 25 Nm) 15 lb-ft - 18 lb-ft
(20 Nm - 25 Nm)
Technical data