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Spark Plug Specifications

SPARK PLUG SPECIFICATIONS

Application Specification
Spark Plug Type
4.3L AC R41-932
4.8L, 5.3L & 6.0L AC 25171803
8.1L Denso TJ14R-P15
Gap Iridium .040 in. (1.04 mm)
Platinum .060 in. (1.52 mm)
Tightening Torque Tighten to 15 ft. lbs. (20 N.m) when using NEW cylinder head. Tighten to 11 ft. lbs. (15 N.m) for all subsequent installations.
Firing Order
4.3L 1-6-5-4-3-2
4.8L, 5.3L, 6.0L & 8.1L 1-8-7-2-6-5-4-3
6.6L 1-2-7-8-4-5-6-3