Engine Piston and Rings Set with part numbers 12578324, 12578326, and 12621251 designed for use in Lacrosse, Verano, Captiva Sport, and Equinox models.This set includes a piston and accompanying rings engineered to meet specifications for fit and function.The components are built to restore proper compression and support engine performance during rebuilds or repairs.Designed for direct replacement, the set compatibility with specified vehicle applications. Compatibility Disclaimer: This is not an OEM item.Mentioned brands/models are used strictly for fitment illustration.