Mercedes-Benz SL-Class 2009 Owners Manual - Manual (Page 350)

Electrical system
348
Electrical system
Model SL 550 SL 600 SL 63 AMG SL 65 AMG
Alternator 14 V / 180 A 14 V / 180 A 14 V / 180 A 14 V / 180 A
Starter motor 12 V / 1.7 kW 12 V / 2.0 kW 12 V / 2.1 kW 12 V / 1.7 kW
Starter battery 12 V / 35 Ah 12 V / 35 Ah 12 V / 35 Ah 12 V / 35 Ah
Battery for electri-
cal consumers
12 V / 70 Ah 12 V / 70 Ah 12 V / 70 Ah 12 V / 70 Ah
Spark plugs Type NGK PLKR 7A NGK IFR 6Q-G NGK ILZKAR 7A10 NGK IFR 6Q-G
Electrode gap 0.031 in (0.8 mm) 0.028 in (0.7 mm) 0.039 in (1.0 mm) 0.028 in (0.7 mm)
Tightening torque 15 lb-ft - 18 lb-ft
(20 Nm - 25 Nm) 18 lb-ft - 22 lb-ft
(25 Nm - 30 Nm) 15 lb-ft - 18 lb-ft
(20 Nm - 25 Nm) 18 lb-ft - 22 lb-ft
(25 Nm - 30 Nm)
Technical data