Dana Gear Fits 4 series spools 3.73  Ratio. 9 3/4" ring gear diameter, 1.626" diameter pinion bearing stem, 29 spline pinion, 8620 material. For OE Carriers 3.54 to 4.10. 1.120" mounting distance. 

*Dana 60™ is a trademark of Dana Limited. MW products are not manufactured or authorized by Dana™.