Spark Plugs - New Improved

Section
2

Group
28

No.
0001

Year
98

Month
05

Vehicles involved: B52xxS engines

New improved spark plugs

Background:

A new spark plug with improved specifications was introduced into production during October 1997 for all 5 cylinder naturally aspirated engines.

The new sparkplug must be used when replacing spark plugs on all new and older 5 cylinder naturally aspirated engines.

Materials:

Spark plug kit 272372-4

Engine serial number delimitations:

B52x4S 1193278 -
B52x2S 1193464 -





Tightening torques and replacement intervals are the same as before.

Electrode gap cannot be adjusted.