spark plugs MERCEDES-BENZ SL550 2008 R230 Owner's Manual

454 Technical data
Electrical system
ModelSL 550SL 600SL 55 AMGSL 65 AMG
Generator (alternator)14 V/180 A14 V/180 A14 V/180 A14 V/180 A
Starter motor12 V/1.7 kW12 V/1.7 kW12 V/1.7 kW12 V/1.7 kW
Starter battery12 V/35 Ah12 V/35 Ah12 V/35 Ah12 V/35 Ah
Battery for electrical consumers12 V/70 Ah12 V/70 Ah12 V/70 Ah12 V/70 Ah
Spark plugsNGK PLKR7ANGK IFR6QGNGK ILFR6ANGK IFR6QG
Electrode gap0.031 in (0.8 mm)0.028 in (0.7 mm)0.031 in (0.8 mm)0.028 in (0.7 mm)
Tightening torque15 – 18 lb-ft
(20 – 25 Nm)18 – 22 lb-ft
(25 – 30 Nm)18 – 22 lb-ft
(25 – 30 Nm)18 – 22 lb-ft
(25 – 30 Nm)