Model Compatibility: Fits S10, Cavalier, Sonoma, and Sunfire vehicles with 2.2L engines as a direct replacement for fuel injector nozzle function. Part Number: Matches part number 17122106 for functional equivalence to the fuel injector nozzle. Quantity Included: Contains 4 fuel injector nozzles per package for full engine set replacement. Application Scope: Designed specifically for use in 2.2L engine applications listed in the title without modification. Functional Purpose: Restores fuel delivery function when replacing worn or failed fuel injector nozzles in compatible models., Manufacturer: YRzPeYCEM