The Spicer 3-3-6321X Trans Slip Yoke is designed for a range of GM vehicles and transmissions, including the Turbo 400 (TH400) with long tail shaft, 4L80E long tail, 6L50, 6L80E, and GM transfer cases like the NP205, NP208, NP241, NP241C, NP243, NP246, NP261, and NP263. This slip yoke features a 4.188-inch outside U-joint dimension and a 1.188-inch bearing cap diameter. It has a spline outside diameter of 1.378 inches with 32 splines (31 effective plus one blind spot) and a hub diameter of 1.885 inches. Designed with a full spline type and an outside snap ring style, it offers a center line to end of spline measurement of 6.940 inches.