Electrical System - Mercedes-Benz SL-Class Operator's Manual

Technical data

Electrical system

Model
Generator (alternator)
Starter motor
Battery
Starter battery
Battery for electrical consumers
Spark plugs
Electrode gap
Tightening torque
428
SL 500 SL 600
14 V/150 A 14 V/180 A
12 V/1.7 kW 12 V/1.7 kW
12 V/35 Ah 12 V/35 Ah
12 V/70 Ah 12 V/70 Ah
Bosch F 8 DPER NGK IFR6QG
NGK PFR5R11
0.039 in (1.0 mm) 0.028 in (0.7 mm)
15 – 22 lb-ft 15 – 22 lb-ft
(20 – 30 Nm) (20 – 30 Nm)
SL 55 AMG SL 65 AMG
14 V/180 A 14 V/180 A
12 V/1.7 kW 12 V/1.7 kW
12 V/35 Ah 12 V/35 Ah
12 V/70 Ah 12 V/70 Ah
NGK ILFR6A NGK IFR6QG
0.031 in (0.8 mm) 0.028 in (0.7 mm)
18 – 22 lb-ft 15 – 22 lb-ft
(25 – 30 Nm) (20 – 30 Nm)