Mercedes-Benz 2003 C-Class Coupe - Manual (Page 314)

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Technical data
Electrical system
Electrical system
Model C 230 Kompressor C 320
Generator (alternator) 14 V/120 A 14 V/120 A
Starter motor 12 V/1.1 kW 12 V/1.7 kW
Battery 12V/100 Ah 12V/100 Ah
Spark plugs Bosch F 6 MPP 332 Bosch F 8 DPP332
NGK PFR 5 R-11
Electrode gap 0.031 in (0.8 mm) 0.039 in (1.0 mm)
Tightening torque 18 – 22 ft.lb (25 - 30 Nm) 15 – 22 ft.lb (20 – 30 Nm)