Revised Spark Plug Specification (SECTION 12, NO. 55)

Publication date: 1995-04-01
Reference number: SECTION 12, NO. 55
Supersedes refnos: SECTION 05.2, NO. 04

REVISED SPARK PLUG SPECIFICATION

TECHNICAL SERVICE BULLETIN

Reference Number(s): SECTION 05.2, NO. 04, SECTION 12, NO. 55

SPARK PLUGS - REVISED SPECIFICATION

Model(s): 1976-95 Jaguar XJS with V12 (Except XJR-S); 1994-95 Jaguar XJ12

Original Section: 12 - Engine Reissued Section: 5.2 - Fuel, Emission Control & Engine Management (V12)

Original Bulletin No.: 12-55 Reissued Bulletin No.: 05.2-04

Date: April, 1995 Amended: May, 1995

NOTE: This Jaguar bulletin has been reissued with a new bulletin number. See Dealer Memo 05-96, dated May, 1996.

ISSUE

The spark plug specification for 5.3L and 6.0L (except XJR-S) V12 engines has been revised. The new specification spark plugs are installed in production from the engine numbers listed below.

Model: XJ12

Engine Number: 8E 11071

Model: XJS (V12) Range

Engine Number: 8D 12479

The temperature characteristics of the revised spark plugs enable deposits to be more readily burned off during normal driving.

ACTION

The revised specification spark plugs may be fitted to all XJ12 Sedans and to all 1990 MY ON XJS (V12) Range vehicles, except XJR-S, at the next required spark plug change.

PARTS INFORMATION

Model	Spark Plug Part Number
XJ12 Sedan	NAB 3850DA
XJS (V12) Range 1990 MY ON	NAB 3850DA
XJR-S	SPE 1007