spark plugs MERCEDES-BENZ S550 2007 W221 Owner's Manual
Page 660 of 705
659 Technical data
Electrical system
Electrical system
Model
S 550
S 600
Generator (alternator)
14 V/180 A
14 V/220 A
Starter motor
12 V/1.7 kW
12 V/1.7 kW
Starter battery
12 V/35 Ah
12 V/35 Ah
Electrical consumer battery
12 V/95 Ah
12 V/95 Ah
Spark plugs
NGK PLKR 6A
Bosch Y 7 MPP 33
NGK IFR 6Q-G
Electrode gap
0.031 in (0.8 mm)
0.028 in (0.7 mm)
Tightening torque
15 – 18 lb-ft (20 – 25 Nm)
18 – 22 lb-ft (25 – 30 Nm)