About Compatibility: for Buick for Rainier,for Cadillac for Escalade/Escalade ESV/Escalade EXT,for Chevy for Avalanche/Colorado/Express 2500/Express 3500/Express 4500/Silverado 1500/Silverado 2500 HD/Silverado 3500 HD/SSR/Suburban 1500/Suburban 2500/Tahoe/Trailblazer/Trailblazer EXT,for GMC for Canyon/Envoy/Envoy XL/Envoy XUV/Savana 2500/Savana 3500/Savana 4500/Sierra 1500/Sierra 2500 HD/Sierra 3500 HD/Yukon/Yukon XL 1500/Yukon XL 2500,for Hummer for H2,for Hummer for H3,for Hummer for H3T. About Fuel Injector: Using high-performance raw materials, the porous injector can achieve precise injection to save fuel to extent.. About Installation:Fits and works better like original OE parts, achieving perfect replacement, simple installation not only saves time but also brings better driving experience.. About Working principle: The fuel injector transports petrol from the fuel tank to the engine cylinder to provide power for the vehicle. After atomizing the fuel, it ensures that the fuel is evenly distributed in the combustion chamber, improves fuel economy..
