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Home >> Chevrolet >> 1990 >> Forward Control 4.3 Z, Automatic, 475/M40 >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Controls - Specifications >> Ignition System >> Spark Plugs
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Spark Plugs

SPARK PLUG TYPE

Application AC
2.5L (VIN E) R43TS6
2.8L (VIN R) R43TSK
3.1L (VIN D) R43TS
4.3L (VIN Z) CR43TS
5.0L (VIN H) CR43TS
5.7L (VIN K) CR43TS
7.4L (VIN N) CR43RS
SPARK PLUG SPECIFICATIONS

Application Gap - In. (mm) Torque - Ft. Lbs. (N.m)
2.5L (VIN E) .060 (1.52) 17 (23)
2.8L (VIN R) .060 (1.52) 22 (30)
3.1L (VIN D) .045 (1.14) 18 (24)
4.3L (VIN Z) .035 (0.89) 22 (30)
5.0L (VIN H) .035 (0.89) 11 (15)
5.7L (VIN K) .035 (0.89) 11 (15)
7.4L (VIN N) .035 (0.89) 11 (15)