Spark Plugs Installation Survey As-Built Configuration

SURVEY OF INSTALLABILITY:
Engine 112.942
Model 163.154 (ML 320)
BERU - 14FGH 8 DPURX 2
Bosch - F 8 DPER
NGK - IFR5D 10


SPARK PLUG IDENTIFICATION:

BERU

Example: 14FGH 8 DTURX 0
14 Thread
F Shape of seat and version
GH Surface discharge spark plug with auxiliary spark gap
8 Thermo index
D Length of thread and length of spark
T Electrode version
U Electrode material
RX0 Version type

Example: 14F-8 DUO
14 Thread
F Shape of seat and version
8 Thermo index
D Length of thread and length of spark
U Electrode material
O Version type

BOSCH

Example: F 8 KTCR
F Shape of seat and thread
8 Thermo index
K Length of thread, spark position
T Electrode version
C Electrode material
R Version type, e.g. with resistor

Example: F 8 DCO
F Shape of seat and thread
8 Thermo index
D Length of thread, spark position
CO Electrode version (heavy-duty)

NGK

Example: BK5 ES
BK ISO version for BCP series
5 Thermal index
E Length of thread
S Design features

Example: IFR5D 10
I Spark plug type (iridium electrode)
F Dimensions of spark plug body
R Interference suppression resistance
5 Thermal index
D Design designation
10 Electrode gap