Yukon Gear 4340CM Left Hand Inner Rplcmnt Axle For 69-80 GM Blazer and Truck / Dana 44 / 5-760X U/J

If you're working on the front axle of a 1969-1980 GM truck or Blazer with a Dana 44 differential, this Yukon Gear 4340CM left-hand inner axle shaft is what you need. It's designed to replace the original axle, ensuring your drivetrain can handle the demands of off-road use or heavy-duty work. This axle is built with high-tensile strength 4340 chromoly, a material known for its strength and resistance to fatigue, making it a solid choice for rebuilding or upgrading your front axle assembly.

Yukon uses cold roll formed splines on these axles, which helps maintain the material's integrity and strength right at the spline root, unlike cut splines. They also employ advanced induction coil heat treating, a process that hardens the surface while keeping the core tough. This combination of materials and manufacturing methods results in a well-built axle shaft that can stand up to the stresses of a 4x4 drivetrain. The axle measures 36.13 inches long and features 30 splines, designed to work with a 5-760X series universal joint.