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Speedmaster
GM Turbo 400 TH400 Output Shaft, Yoke, and Tail Housing Kit - 40 Spline
MPN: PCE598.1009 UPC: 840136567394
These Speedmaster tailshaft housings are designed to fit the stock Turbo 400 transmissions. They are five times stronger and more ridged than stock because they are made from aircraft grade aluminum alloy. Featuring thicker walls and more gusseting than any other manufacturer.