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This Yukon USA 4340 chrome-moly axle kit fits 1979–1987 GM truck and Blazer front applications with GM 8.5" differentials and a 30-spline configuration, and it includes Yukon Super Joints. Constructed and heat-treated from 4340 chromoly for increased durability, the kit provides matched shafts and necessary joints for a heavy-duty direct replacement.
USA Standard 4340CM Axle Kit For 79-87 GM Truck & Blazer / GM 8.5in / 30 Spline w/Super Joints
