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Service bulletin 1255A

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id43092
Published by NHTSA1995-11-01
Manufacturer's number1255A
Manufacturer's date1995-04-01
Replaces12-55
NHTSA componentELECTRICAL SYSTEM:IGNITION

NHTSA's summary

REVISED SPARK PLUG SPECIFICATIONS FOR VEHICLES WITH V12 ENGINES. *TW

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, Ignition

Vehicles listed
JAGUAR XJ12
JAGUAR XJR1995
JAGUAR XJS1990, 1991, 1992, 1993, 1994, 1995

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
92V0090001992-01-23. ELECTRICAL SYSTEM:IGNITION

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
18412005-02-03. Service bulletin. INTERMITTENT POWER LOSS TACH DROPS TO ZERO REPOSITION IGNITION AMPLIFIER. *EH
18552001-04-14. Service bulletin. SOME VEHICLES MAY HAVE SPARK PLUGS THAT HAVE BEEN AFFECTED BY CORONA DISCHARGE THAT LEADS TO CORONA STAIN OR WHAT IS OFTEN REFERRED TO AS SPARK PLUG BLOW-BY. *TT