Description: Express, savana. All. 6.0l. All. 4.8l. All models. 5.3l. Astro, Safari. 4.3l. 105 amp. SSR. Manual trans. 145 Amp. Newly manufactured as an exact replacement for your GM vehicle's original alternator This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors