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The Yukon 4340 chromoly right-hand inner axle for 1979 and later GM 8.5-inch truck and Blazer applications is a high-strength replacement inner axle constructed from 4340 chrome-moly with cold-rolled splines and heat treatment for durability. It fits GM 8.5-inch differentials, uses 5-760X series U-joints, measures 19.15 inches long, and is supplied with a 30-spline configuration where specified.
Yukon Gear 4340 Chrome-Moly Right Hand Inner Axle For 79+ GM 8.5in Blazer and Truck / Uses 5-760X
