XJR (X300) L6-4.0L SC (AJ16) (1995)
Cylinder Head Gasket: Technical Service Bulletins
Engine - Coolant Leakage
03.1-11
DATE 6/97
Sedan Range
Coolant Leakage - Cylinder Head Gasket - Revised Gasket Design
MODEL
1995-97 MY Sedan (4.0L) Range
VIN
720001-ON
ISSUE:
A revised head gasket, which is more resistant to coolant leakage, has been introduced into production from engine no. B168652 at VIN 794099.
The revised gasket can be identified by the part no. stamped on the gasket near the word "TOP" (Illustration 1). Two part numbers are available
depending on the engine no.
ACTION:
When replacing the cylinder head gasket on all AJ 16 engines, always verify that you are installing the revised head gasket, as well as the correct gasket
for the engine number.
For engines up to engine no.
B107672 Normally Aspirated
or B107674 Supercharged
use NBC 2520BB
For engines from engine no.
B107673 Normally Aspirated
or B107675 Supercharged
use NBC 2520AB
PARTS INFORMATION:
DESCRIPTION
PART NUMBER
QTY
Revised cylinder head gasket
NBC 2520AB
1
from engine no. B107673 NA
from engine no. B107675 SC
Revised cylinder head gasket
NBC 2520BB
1
up to engine no. B1O7672 NA
up to engine no. B107674 SC