Vauxhall Workshop Service and Repair Manuals > Astra > J Engine and Engine Aggregates | OHC Petrol Engine | Cylinder Head | Specifications

Spark Plugs

Vehicles with Catalytic Converter	Designation	Electrode gap in mm
C 16 LZ engines	WR 6 DC	1.1
OHV and CIH engines	WR 7 BC CR 4.25 FS
OHC engines	WR 6 DC	0.7 - 0.8
C 20 NE engines as of MY '10/88	WR 7 DC
DOHC engines (C 20 XE)	FR 7 DC

Vehicles without catalytic converter	Designation	Electrode gap in mm
OHV and CIH engines	CR 42 CFS CR 4.25 FS
All OHC engines	CR 42 CXLS	0.7 - 0.8
	WR 7 DC
DOHC engines (20 XE, 20 XEJ)	FR 7 DC

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