Spark Plug Specifications
SPARK PLUG SPECIFICATIONS
| Application | Specification | ||
|---|---|---|---|
| Firing Order | 1-8-7-2-6-5-4-3 | ||
| Gap | Iridium .040 in. (1.04 mm) Platinum .060 in. (1.52 mm) |
||
| Spark Plug Type | |||
| 4.8L, 5.3L & 6.0L | |||
| AC | 25171803 | ||
| NGK | 12567759 | ||
| 8.1L | TJ14R-P15 (Denso Plug Type) | ||
| Spark Plug Torque | |||
| 4.8L, 5.3L & 6.0L | * Tighten the plug to 15 Nm (11 lb ft) for used heads. * Tighten the plug to 20 Nm (15 lb ft) for NEW heads. | ||
| 8.1L | 15 Ft. Lbs. (20 N.m) | ||