OTTO 394-9492 Clutch Shaft Sleeve for Caterpillar backhoe loaders - a 42-teeth low alloy steel sleeve supplied as a replacement for Cat part 394-9492. It joins the clutch shaft to the transmission and carries drive torque, so a stripped or worn spline shows up as lost drive and transmission whine. Inside diameter 2.1 in, outside diameter 2.917 in, overall length 0.907 in (approx. 53.3 x 74.1 x 23.0 mm). Fits Cat backhoe loaders 415F2, 416F2, 420F2, 422F2, 426F2, 427F2, 428F2, 430F2, 432F2, 434F2 and the 415F2 IL industrial loader. 3-12 months warranty options.