left half shaft
The left half shaft is a significant aspect in many automobile transmission systems, by which power from the trey is transmitted to tires. This one allows the driving wheels to be rotated—on the vehicle's left-hand side for this axle, from which it takes its name--) by connecting them to the differential One end usually splines into the differential, as seen here, and the other has a constant velocity (CV) joint to allow articulation and slight angle changes when the suspension travels. Half shafts are also greatly improved, thanks largely to advancements in materials technology allowing the use of high-strength steel and lightweight materials – increasing their durability and dropping their weight. You need the left half shaft for front-, rear-, or all-wheel-drive vehicles to properly transfer power and have everything work as it was intended.