Group Size (BCI): 121R; Cold Cranking Amps (CCA): 600 CCA; Cranking Amps (CA): 750 CA; Voltage (V): 12 Volt; Length (in): 8-3/16 Inch; Width (in): 6-7/8 Inch; Height (in): 8-3/8 Inch; GM Genuine Parts are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles