GM Genuine Parts starters have components that are newly manufactured and are GM-recommended replacements for your vehicle's original starter. ACDelco GM Genuine Parts starters consist of a powerful DC motor coupled to the starter drive pinion. The starter drive pinion engages the engine flywheel to crank the engine, providing the same high standard performance, durability, and service life you expect from General Motors. Stay with the brand your vehicle came with and get the quality you know and trust with ACDelco.