Mercedes-Benz 2003 SLK-Class - Manual (Page 266)

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Technical data
Electrical system
Electrical system
Model SLK 230 Kompressor SLK 320 SLK 32 AMG
Generator (alternator) 14 V/90 A 14 V/115 A 14 V/120 A
Starter motor 12 V/1.1 kW 12 V/1.7 kW 12 V/1.7 kW
Battery 12 V/74 Ah 12 V/74 Ah 12 V/74 Ah
Spark plugs Bosch F 7 KTCR Bosch F 8 DPER
Beru 14 FGH 8 DPUR X 2
NGK PFR 5-11 NGK IFR 6D1O
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)