Premium Iridium Spark Plug for Chevrolet, Cadillac, Hummer H2
High-performance iridium tip ensures superior ignitability and extended service life. Precision-engineered electrode design reduces voltage requirements, enhancing fuel efficiency and minimizing misfires.
Direct replacement for OEM part numbers 12621258 and 41-110, guaranteeing perfect fit for GM 5.3L/6.0L V8 engines. Laser-welded construction prevents corrosion and maintains consistent spark gap under extreme temperatures.
Optimized for heavy-duty applications including towing, off-roading, and cold-start conditions. Nickel-plated shell resists carbon buildup while triple-seal gasket prevents combustion gas leakage.
Engineered for vehicles requiring maximum durability: Chevrolet Silverado/Tahoe, Cadillac Escalade, Hummer H2. Drop-in installation with factory torque specifications—no ECU recalibration needed.
Bulk purchase available for commercial repair shops and fleet managers. Ships globally with OEM-grade packaging to prevent transit damage. Performance tested to exceed SAE J2598 standards.






























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Auto Parts Spark Plug For Chevrolet Cadillac Hummer H2 12621258 41-110 Engine Iridium Spark Plugs
$1.7$2.67-36.33%
Specification:
12621258
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