CNPAPC Spark Plugs: OE number: 41-962,19299585, 41-110,19297035, 12192192, 12192195. IZTR5B11 1465 [Better ignition performance] This design is an upgraded version of OEM platinum material, using iridium center electrode, and the electrode adopts "hot melt" technology, which has good thermal conductivity and air tightness, and has better ignition performance AND LONG service life than platinum material. | MORE FUEL EFFICIENT: Tapered side electrodes increase charge accumulation,improve ignition channels and save fuel LONGER LIFE: iridium has excellent oxidationresistance, does not wear sparkplug gaps, and long service life | Plug and Play: Direct replacement, saving time and effort. It will help to improve the gas mileage of your vehicle and deliver excellent performance for a long time. | Fits GM Models: For CADILLAC ESCALADE 2002-2006. For CHEVROLET AVALANCHE 1500 2002-2006; For CHEVROLET SILVERADO 1500 1999-2006; For CHEVROLET SILVERADO 1500 CLASSIC 2007; For CHEVROLET SILVERADO 2500 1999-2006; For CHEVROLET SILVERADO 2500 CLASSIC 2007; For CHEVROLET SILVERADO 3500 2001-2006; For CHEVROLET SILVERADO 3500 CLASSIC 2007; For CHEVROLET SUBURBAN 1500 2000-2006; For CHEVROLET SUBURBAN 2500 2000-2006. | Quick After Sales Service: We provide 12 months warranty service for this spark plugs, and we attach great importance to every customer's satisfaction. If for any reason we are not meeting your expectations, please feel free to contact us and we will do our best to resolve all your concerns.