雪佛兰别克GM喷油嘴 12638530 12669384 原厂标准燃油喷射器

Direct replacement injectors with OEM numbers 12638530, 12669384; compatible with 12611545, 12663380 as well; no re-wiring needed, just install to match. Function: precisely spray fuel into cylinders, ensuring proper fuel/air mixture and complete combustion. Fits Buick, Chevrolet GM models around 2010–2016 such as Regal, Cruze. Replacement resolves idle jitter, acceleration hesitation, and high fuel consumption; improves power output. If cold-start is difficult, exhaust smoke, or check engine light is on, injector aging is likely; replace.