These iridium spark plugs are precision-engineered for Cadillac CT6 engines and compatible with GM part numbers 41-123, 12637199, 12673528, and 12683541. The fine iridium tip offers extended durability, smoother idle, and quicker starts. Designed for modern direct-injection engines, the plug’s high-performance materials reduce misfire rates and fuel consumption. The strong anti-fouling characteristics ensure optimal combustion and lower emissions. Recommended for luxury vehicles requiring consistent, premium ignition performance.
Type : Iridium
Thread Size : M14x1.25
Heat Range7
Gap (mm) : 0.7
Electrode Material : Ruthenium-enhanced
Compatible Vehicles : Cadillac 3.0TT
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