6729-1. Specifications
HILUX_OM_OM0K375E_(EE)
Vehicles with maintenance type battery
Vehicles with maintenance-free type battery
Ignition system (gasoline engine)
Spark plug
MakeDENSO FK20HR-A8
Gap0.8 mm (0.031 in.)
NOTICE
■Iridium-tipped spark plugs 
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system
Battery
Specific gravity reading 
at 20 C (68F): 
1.25 or higher 
If the specific gravity is lower than the standard
value, charge the battery.
Charging rates
Quick charge
Slow charge 
15 A  max. 
5 A  max.
Battery
Open voltage at 20 C 
(68 F): 
12.3 V or higher 
If the voltage is lower than the standard value,
charge the battery. 
(After charging the battery, turn on the high 
beam headlights for 30 seconds with the engine
switch in the “LOCK” position [vehicles without 
smart entry & start system] or off [vehicles with 
smart entry & start system], and turn the head-
lights off.)
Charging rates 5 A max.