OE Replacement; 6-Groove 49 Millimeter K6 Belt; 12 Volt; 254 Amps At 9000 RPM/ 187 Amps At 6000 RPM/ 157 Aps At 3000 RPM; Vortec Mount; Internal/ External Regulator; 4 Wires; Black Cerakote; 16 Poles; Small Frame; Side Mount M8 Thread Battery Post; 17 Millimeter Diameter Shaft Pulley Mount; SAE J1171 Certified